Unregulated DC Supply OUT. Error Amp. 182k. 60k Error Detection Comparator ERR

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Lawrence Rice
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1 MIC9/9 MIC9/9 ma ow-dropout oltage Regulator General Description The MIC9 and MIC9 are bulletproof micropower voltage regulators with very low dropout voltage (typically m at light loads and m at ma), and very low quiescent current. ike their predecessors, the P9 and P9, the quiescent current of the MIC9/MIC9 increases only slightly in dropout, thus prolonging battery life. The MIC9/MIC9 are pin for pin compatible with the P9/P9, but offer lower dropout, lower quiescent current, reverse battery, and automotive load dump protection. The key additional features and protection offered include higher output current (ma), positive transient protection for up to (load dump), and the ability to survive an unregulated input voltage transient of below ground (reverse battery). The plastic DIP and SOIC versions offer additional system functions such as programmable output voltage and logic controlled shutdown. The -pin TO-9 MIC9 is pincompatible with the older regulators. These system functions also include an error flag output that warns of a low output voltage, which is often due to failing batteries on the input. This may also be used as a power-on reset. A logic-compatible shutdown input is also available which enables the regulator to be switched on and off. This part may also be pin-strapped for a output, or programmed from. to 9 with the use of two external resistors. Features High accuracy.,., or, guaranteed ma output Extremely low quiescent current ow-dropout voltage Extremely tight load and line regulation ery low temperature coefficient Use as regulator or reference Needs only.µf for stability Current and thermal limiting Unregulated DC input can withstand reverse battery and positive transients Error flag warns of output dropout (MIC9) ogic-controlled electronic shutdown (MIC9) Output programmable from. to 9 (MIC9) Applications Automotive Electronics Battery Powered Equipment Cellular Telephones SMPS Post-Regulator oltage Reference Avionics High Efficiency inear Power Supplies Block Diagram Unregulated DC Supply FB IN /ma Output SHDN Error Amp. k SNS TAP k TT/CMOS Control ogic Input m k Error Detection Comparator ERR TT/CMOS Compatible Error Output. REF..µF MIC9-x, Inc. 9 Fortune Drive San Jose, CA 9 USA tel () 9- fax () February 999 MIC9/9

2 MIC9/9 The MIC9 is available as either an - or - version. The - and - versions are guaranteed for junction temperatures from C to C; the - version has a tighter output and reference voltage specification range over temperature. The MIC9 is available as an - or - version. The MIC9 and MIC9 have a tight initial tolerance (.% typical), a very low output voltage temperature coefficient which allows use as a low-power voltage reference, and extremely good load and line regulation (.% typical). This greatly reduces the error in the overall circuit, and is the result of careful design techniques and process control. Ordering Information Part Number oltage Accuracy Temperature Range* Package MIC9-BZ..% C to C TO-9 MIC9-BZ..% C to C TO-9 MIC9-BM..% C to C -pin SOIC MIC9-BM..% C to C -pin SOIC MIC9-BN..% C to C -pin plastic DIP MIC9-BN..% C to C -pin plastic DIP MIC9-BMM..% C to C -lead MM MIC9-.BM..% C to C -pin SOIC MIC9-.BM..% C to C -pin SOIC * junction temperature Pin Configuration MIC9-xx MIC9-xx SNS SHDN 7 IN FB TAP IN ERR TO-9 (Z) (Bottom iew) DIP (N), SOIC (M), MM (MM) (Top iew) Pin Description Pin # Pin # Pin Name Pin Function MIC9 MIC9 Regulated Output SNS Sense (Input): Output-voltage sensing end of internal voltage divider for fixed operation. Not used in adjustable configuration. SHDN Shutdown/Enable (Input): TT compatible input. High = shutdown, low or open = enable. Ground ERR Error Flag (Output): Active low, open-collector output (low = error, floating = normal). TAP././ Tap: Output of internal voltage divider when the regulator is configured for fixed operation. Not used in adjustable configuration. 7 FB Feedback (Input):. feedback from internal voltage divider s TAP (for fixed operation) or external resistor network (adjustable configuration). IN Unregulated Supply Input MIC9/9 February 999

3 MIC9/9 Absolute Maximum Ratings (Note ) Input Suppy oltage ( IN ) Note... to Feedback Input oltage ( FB ) Note, to Shutdown Input oltage ( SHDN ) Note.... to Power Dissipation (P D ) Note... Internally imited Storage Temperature... C to C ead Temperature (soldering, sec.)... C E, Note Operating Ratings (Note ) Input Supply oltage ( IN ).... to Junction Temperature (T J )... Note MIC9-/MIC9-... C to C MIC9-/MIC9-... C to C Electrical Characteristics (Note ) IN = ; I = µa; C = µf; T J = C, bold values indicate C T J C; Note ; unless noted. Parameter Condition Min Typ Max Units Output oltage MIC9x-/- (±.%), T J = C.97.. MIC9x-/- (±%), T J = C.9.. MIC9-. (±%), T J = C.7.. MIC9-. (±%), T J = C...99 Output oltage MIC9x-/- (±.%), C T J C.9. MIC9x-/- (±%), C T J C.9.7 MIC9-. (±%), C T J C.. MIC9-. (±%), C T J C Output oltage MIC9x-/- (±.%), C to C.9. Over Full Temperature Range MIC9x-/- (±%), C to C.9. MIC9-. (±%), C to C.. MIC9-. (±%), C to C.7.97 Output oltage MIC9x-/- (±.%), µa I ma, T J T J(max).9.7 Over oad ariation MIC9x-/- (±%), µa I ma, T J T J(max).. MIC9-. (±%), µa I ma, T J T J(max)..79 MIC9-. (±%), µa I ma, T J T J(max).7.97 Output oltage MIC9x-/- (±.%), Note 9 ppm/ C Temperature Coefficient MIC9x-/- (±%), Note 9 ppm/ C MIC9-. (±%), Note 9 ppm/ C MIC9-. (±%), Note 9 ppm/ C ine Regulation MIC9x-/- (±.%), Note,.. %. % MIC9x-/- (±%), Note,.. %. % MIC9-. (±%), Note,.. %. % MIC9-. (±%), Note,.. %. % February 999 MIC9/9

4 MIC9/9 Parameter Condition Min Typ Max Units oad Regulation MIC9x-/- (±.%), µa I ma, Note.. %. % MIC9x-/- (±%), µa I ma, Note.. %. % MIC9-. (±%), µa I ma, Note.. %. % MIC9-. (±%), µa I ma, Note.. %. % Dropout oltage MIC9x-/-/-/-, I = µa, Note m m MIC9x-/-/-/-, I = ma, Note m MIC9x-/-/-/-, I = ma, Note m m MIC9-. (±%), I = µa, Note m m MIC9-. (±%), I = ma, Note m MIC9-. (±%), I = ma, Note m m MIC9-. (±%), I = µa, Note m m MIC9-. (±%), I = ma, Note m MIC9-. (±%), I = ma, Note m m Ground Current MIC9x-/-/-/-, I = µa µa µa MIC9x-/-/-/-, I = ma.7. ma. ma MIC9x-/-/-/-, I = ma ma ma MIC9-. (±%), I = µa µa µa MIC9-. (±%), I = ma.7. ma MIC9-. (±%), I = ma ma ma MIC9-. (±%), I = µa µa µa MIC9-. (±%), I = ma.7. ma. ma MIC9-. (±%), I = ma ma ma Dropout Ground Current MIC9x-/-/-/- (±.%), IN =., I = µa µa µa MIC9-. (±%), IN =., I = µa µa µa MIC9-. (±%), IN =., I = µa µa µa MIC9/9 February 999

5 MIC9/9 Parameter Condition Min Typ Max Units Current imit = ma ma Thermal Regulation Note.. %/W Output Noise Hz to khz, C =.µf µ RMS Hz to khz, C = µf µ RMS Hz to khz, C =.µf, µ RMS.µF bypass Feedback to Output Reference oltage MIC9x-/- (±.%)..... MIC9x-/- (±%) MIC9-. (±%) MIC9-. (±%) Reference oltage MIC9x-/- (±.%), Note.9.7 MIC9x-/- (±%), Note.. MIC9-. (±%), Note.. MIC9-. (±%), Note.. Feedback Bias Current na na Reference oltage MIC9x-/- (±.%), Note 9 ppm/ C Temperature Coefficient MIC9x-/- (±%), Note 9 ppm/ C MIC9-. (±%), Note 9 ppm/ C MIC9-. (±%), Note 9 ppm/ C Feedback Bias Current. na/ C Temperature Coefficient Error Comparator (Flag) OH =.. µa Output eakage Current. µa Error Comparator (Flag) IN =., I O = µa m Output ow oltage m Error Comparator Note m Upper Threshold oltage m Error Comparator Note 7 9 m ower Threshold oltage m Error Comparator Hysteresis Note m February 999 MIC9/9

6 MIC9/9 Parameter Condition Min Typ Max Units Shutdown Input ogic oltage MIC9x-/- (±.%). ow.7 High. MIC9x-/- (±%). ow.7 High. MIC9-. (±%). ow.7 High. MIC9-. (±%). ow.7 High. Shutdown Input Current SHUTDOWN =. µa µa SHUTDOWN = µa 7 µa Regulator Output Current Note 7 µa in Shutdown µa Note. Note. Note. Note. Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are E sensitive. Handling precautions are recommended. The junction-to-ambient thermal resistance of the TO-9 package is C/W with. leads and C/W with. leads to a PC board. The thermal resistance of the -pin DIP package is C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal resistance for the SOIC (M) package is C/W. Junction-to-ambient thermal resistance for the MM (MM) is C/W. Note. The maximum positive supply voltage of must be of limited duration ( ms) and duty cycle ( %). The maximum continuous supply voltage is. Note. When used in dual-supply systems where the output terminal sees loads returned to a negative supply, the output voltage should be diodeclamped to ground. Note 7. SHDN, IN, =, with the FB pin connected to TAP. Note. Additional conditions for -pin devices are FB =, TAP and connected to SNS ( = ) and SHDN.. Note 9. Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Note. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered in the specification for thermal regulation. Note. ine regulation for the MIC9 is tested at C for I = ma. For I = µa and T J = C, line regulation is guaranteed by design to.%. See Typical Performance Characteristics for line regulation versus temperature and load current. Note. Dropout voltage is defined as the input to output differential at which the output voltage drops m below its nominal value measured at differential. At very low values of programmed output voltage, the minimum input supply voltage of (. over temperature) must be taken into account. Note. Thermal regulation is defined as the change in output voltage at a time t after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a ma load pulse at IN = (.W pulse) for t = ms. Note. REF ( IN ),. IN, µa < I ma, T J T JMAX. Note. Comparator thresholds are expressed in terms of a voltage differential at the FB terminal below the nominal reference voltage measured at input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = / REF = (R R)/R. For example, at a programmed output voltage of, the error output is guaranteed to go low when the output drops by 9m x /. = m. Thresholds remain constant as a percent of as is varied, with the dropout warning occurring at typically % below nominal, 7.% guaranteed. Note. Specification for packaged product only. MIC9/9 February 999

7 MIC9/9 Typical Characteristics QUIESCENT CURRENT Ground Pin Current Dropout Characteristics Input Current R = R = R = Ω. R = PUT OTAGE () OAD CURRENT (ma) INPUT OTAGE () INPUT OTAGE () INPUT CURRENT (µa) INPUT CURRENT (ma) Input Current R = Ω PUT OTAGE () Output oltage vs. Temperature of Representative Units Ground Pin Current.. I = ma. I =..9.9.% QUIESCENT CURRENT (µa) INPUT OTAGE () TEMPERATURE ( C) INPUT OTAGE () QUIESCENT CURRENT (µa) Ground Pin Current IN = I = µa QUIESCENT CURRENT (ma) Ground Pin Current 7 IN = I = ma QUIESCENT CURRENT (ma) Ground Pin Current 9 7 I = ma TEMPERATURE ( C) TEMPERATURE ( C) INPUT OTAGE () SHORT CIRCUIT CURRENT (ma) Short Circuit Current DROP OTAGE (m) Dropout oltage I = ma I = µa Dropout oltage T = C J. TEMPERATURE ( C) TEMPERATURE ( C) PUT CURRENT (ma) DROP OTAGE (m) February MIC9/9

8 MIC9/9 MINIMUM OPERATING OTAGE () MIC9 Minimum Operating oltage BIAS CURRENT (na) - - MIC9 Feedback Bias Current FEEDBACK CURRENT (µa) - - MIC9 Feedback Pin Current PIN 7 DRIEN BY EXTERNA SOURCE (REGUATOR RUN OPEN OOP) T = C A - T A = C - T A = C TEMPERATURE ( C) TEMPERATURE ( C) FEEDBACK OTAGE () COMPARATOR PUT () MIC9 MIC9 Error Comparator Output Comparator Sink Current. = T A = C. HYSTERESIS PUUP RESISTOR TO SEPARATE SUPPY - SINK CURRENT (ma)... T = C A T = - C A PUT OTAGE CHANGE INPUT OTAGE ine Transient Response m m - m C =.7µF I = ma = INPUT OTAGE () PUT OW OTAGE () TIME (µs) PUT OTAGE CHANGE (m) OAD CURRENT ma µa oad Transient Response C =.7 µf = PUT OTAGE CHANGE (m) OAD CURRENT oad Transient Response - - C = µf - = ma µa PUT OTAGE () SHUTDOWN PIN OTAGE () 7 - MIC9 Enable Transient C =. µf C = µf I = ma IN = = - 7 TIME (ms) TIME (ms) TIME (µs) PUT IMPEDANCE (OHMS) Output Impedance I = µa I = ma I = ma = C =.7 µf K K K M RIPPE REJECTION (db) Ripple Rejection 9 7 C =. µf IN = = I = I = µa RIPPE REJECTION (db) Ripple Rejection 9 7 I = ma C =. µf IN = = I = ma FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) MIC9/9 February 999

9 MIC9/9 RIPPE REJECTION (db) Ripple Rejection I = µa 7 I = ma C =. µf IN = = OTAGE NOISE SPECTRA DENSITY (µ/ Hz) Output Noise... I = ma C =.7 µf C = µf.. C =. µf... µf BYPASS PIN TO. PIN 7 PIN TO PIN RESISTANCE (k Ω ) MIC9 Divider Resistance FREQUENCY (Hz) FREQUENCY (Hz) TEMPERATURE ( C) SHUTDOWN THRESHOD OTAGE () Shutdown Threshold oltage TEMPERATURE ( C) PUT OTAGE CHANGE (m) ine Regulation I = µa INPUT OTAGE () PUT CURRENT (ma) MIC9 Maximum Rated Output Current T J = C T = C MAX J I = ma = T A = C I = µa T A = C T J = C - T A = C - -PIN SOIC SODERED TO PC BOARD INPUT OTAGE () PUT CURRENT (ma) MIC9 Maximum Rated Output TO-9 PACKAGE." EADS SODERED TO PC BOARD T J = C MAX T A = C T = C A INPUT OTAGE () PUT OTAGE CHANGE (m) POWER DISSIPATION (W) Thermal Response - -.W TIME (µs) PUT CURRENT (ma) Fold-Back Current imiting PUT OTAGE () February MIC9/9

10 MIC9/9 Applications Information Automotive Applications The MIC9/9 are ideally suited for automotive applications for a variety of reasons. They will operate over a wide range of input voltages, have very low dropout voltages (m at light loads), and very low quiescent currents. These features are necessary for use in battery powered systems, such as automobiles. They are also bulletproof devices; with the ability to survive both reverse battery (negative transients up to below ground), and load dump (positive transients up to ) conditions. A wide operating temperature range with low temperature coefficients is yet another reason to use these versatile regulators in automotive designs. External Capacitors A. µf (or greater) capacitor is required between the MIC9/MIC9 output and ground to prevent oscillations due to instability. Most types of tantalum or aluminum electrolytics will be adequate; film types will work, but are costly and therefore not recommended. Many aluminum electrolytics have electrolytes that freeze at about C, so solid tantalums are recommended for operation below C. The important parameters of the capacitor are an effective series resistance of about Ω or less and a resonant frequency above khz. The value of this capacitor may be increased without limit. At lower values of output current, less output capacitance is required for output stability. The capacitor can be reduced to.µf for current below ma or.µf for currents below ma. Using the -pin versions at voltages below runs the error amplifier at lower gains so that more output capacitance is needed. For the worst-case situation of a ma load at. output (Output shorted to Feedback) a µf (or greater) capacitor should be used. The MIC9 will remain stable and in regulation with no load in addition to the internal voltage divider, unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications. When setting the output voltage of the MIC9 version with external resistors, a minimum load of µa is recommended. A.µF capacitor should be placed from the MIC9/ MIC9 input to ground if there is more than inches of wire between the input and the AC filter capacitor or if a battery is used as the input. Stray capacitance to the MIC9 Feedback terminal (pin 7) can cause instability. This may especially be a problem when using high value external resistors to set the output voltage. Adding a pf capacitor between Output and Feedback and increasing the output capacitor to at least.µf will remedy this. Error Detection Comparator Output A logic low output will be produced by the comparator whenever the MIC9 output falls out of regulation by more than approximately %. This figure is the comparator s built-in MIC9/9 February 999 offset of about m divided by the. reference voltage. (Refer to the block diagram on Page ). This trip level remains % below normal regardless of the programmed output voltage of the MIC9. For example, the error flag trip level is typically.7 for a output or. for a output. The out of regulation condition may be due either to low input voltage, current limiting, thermal limiting, or overvoltage on input (over ). Figure is a timing diagram depicting the signal and the regulated output voltage as the MIC9 input is ramped up and down. The signal becomes valid (low) at about. input. It goes high at about input (the input voltage at which =.7 for. applications). Since the MIC9 s dropout voltage is load-dependent (see curve in Typical Performance Characteristics), the input voltage trip point (about ) will vary with the load current. The output voltage trip point does not vary with load. The error comparator has an open-collector output which requires an external pull-up resistor. Depending on system requirements, this resistor may be returned to the output or some other supply voltage. In determining a value for this resistor, note that while the output is rated to sink µa, this sink current adds to battery drain in a low battery condition. Suggested values range from k to MΩ. The resistor is not required if this output is unused. Programming the Output oltage (MIC9) The MIC9 may be pin-strapped for (or. or.) using its internal voltage divider by tying Pin (output) to Pin (sense) and Pin 7 (feedback) to Pin ( Tap). Alternatively, it may be programmed for any output voltage between its. reference and its maximum rating. An external pair of resistors is required, as shown in Figure. The complete equation for the output voltage is = REF x { R /R } I FB R where REF is the nominal. reference voltage and I FB is the feedback pin bias current, nominally na. The minimum recommended load current of µa forces an upper limit of.mω on the value of R, if the regulator must work with no load (a condition often found in CMOS in standby), I FB will produce a % typical error in which may be eliminated at room temperature by trimming R. For better accuracy, choosing R = k reduces this error to.7% while increasing the resistor program current to µa. Reducing Output Noise In some applications it may be advantageous to reduce the AC noise present at the output. One method is to reduce the regulator bandwidth by increasing the size of the output capacitor. This is the only method by which noise can be reduced on the lead MIC9 and is relatively inefficient, as increasing the capacitor from µf to µf only decreases the noise from µ to µ rms for a khz bandwidth at output.

11 MIC9/9 Noise can be reduced fourfold by a bypass capacitor across R, since it reduces the high frequency gain from to unity. Pick: C BYPASS R Hz π or about. µf. When doing this, the output capacitor must be increased to. µf to maintain stability. These changes reduce the output noise from µ to µ rms for a khz bandwidth at output. With the bypass capacitor added, noise no longer scales with output voltage so that improvements are more dramatic at higher output voltages. PUT OTAGE INPUT OTAGE AID NOT.7 *. * NOT AID IN PUT MIC9 SHUTDOWN INPUT OFF FB ON 7. = REF x ( R ). R pf R.µF REF R * SEE APPICATIONS INFORMATION NOTE: PINS AND ARE EFT OPEN *SEE APPICATIONS INFORMATION Figure. Output Timing Figure. Adjustable Regulator 7 Typical Applications *SEEP INPUT PUT SHUTDOWN INPUT OFF ON 7 MIC9 FB 7 *HIGH INPUT OWERS TO. C-MOS GATE 7 N9 pf Regulator with. Sleep Function % %.µf PUT MIC9 SHUTDOWN INPUT OFF FB ON 7 * IN *MINIMUM INPUT-PUT OTAGE RANGES FROM m TO m, DEPENDING ON OAD CURRENT. Wide Input oltage Range Current imiter 7 February 999 MIC9/9

12 MIC9/9 = I OAD I =. R BUS * SHUTDOWN INPUT IN MIC9.µF MIC9Z µf ON OFF R % FB 7 µf -olt Current imiter * MINIMUM INPUT-PUT OTAGE RANGES FROM m TO m, DEPENDING ON OAD CURRENT. 7 7 ow Drift Current Source D SENSE MIC9 # 7.7MΩ D D D MEMORY µf. NICAD EARY WARNING 7 9 Q SENSE MIC9 # MAIN PUT µf RESET µp DO Regulator with Early Warning and Auxiliary Output EARY WARNING FAG ON OW INPUT OTAGE MAIN PUT ATCHES OFF AT OWER INPUT OTAGES BATTERY BACKUP ON AUXIIARY PUT OPERATION: REG. # S IS PROGRAMMED ONE DIODE DROP ABOE. ITS FAG BECOMES ACTIE WHEN IN.7. WHEN IN DROPS BEOW., THE FAG OF REG. # BECOMES ACTIE AND IA Q ATCHES THE MAIN PUT OFF. WHEN IN AGAIN EXCEEDS.7 REG. # IS BACK IN REGUATION AND THE EARY WARNING SIGNA RISES, UNATCHING REG. # IA D. MIC9/9 February 999

13 MIC9/9 7 7 RESET MIC9 FB 7 ma IN N R MIC9 µf.µf FB 7 R N7.7mA PUT* * HIGH FOR I <.ma atch Off When Error Flag Occurs MIN. OTAGE Open Circuit Detector for ma to ma Current oop 9 RESET C 9 MIC9 SENSE TAP FB 7 = µf EAD- ACID BATTERY C-C P9 % % % R C C C <.** <.** <.** % 7 C TO C ARE COMPARATORS (P9 OR EQUIAENT) *OPTIONA ATCH OFF WHEN DROP OCCURS. ADJUST R FOR C SWITCHING WHEN IN IS. **PUTS GO OW WHEN IN DROPS BEOW DESIGNATED THRESHODS. Regulator with State-of-Charge Indicator February 999 MIC9/9

14 MIC9/9 * Sets disconnect voltage ** Sets disconnect hysteresis SEAED EAD- ACID BATTERY SOURCE * FOR. FB M.** N7 MIC9 SENSE µf ow-battery Disconnect For values shown, Regulator shuts down when IN <. and turns on again at.. Current drain in disconnected mode is µa. AUX. SHUTDOWN INPUT ON TEMP. SENSOR OFF M OR M MIC9 FB 7. PRE-SHUTDOWN FAG EXTERNA CIRCUIT PROTECTED FROM OER TEMPERATURE ( GOES OFF WHEN TEMP.> ) OR REAY M for F Shutdown M for C Shutdown Schematic Diagram System Overtemperature Protection Circuit IN FEEDBACK QA Q9 QB R x Q Q Q Q Q Q R C pf Q Q R. Q Q7 Q Q Q7 Q R7 SENSE R7 R TAP Q Q R R R Q R R Q R R Q R. R9 7. Q R Q R R Q C pf R Q9 Q Q9 Q Q R R R7 Ω Q R Ω Q7 Q R Q Q R R SHDN Q Q Q9 R R. DENOTES CONNECTION ON MIC9 ONY MIC9/9 February 999

15 MIC9/9 Package Information. (.) MAX) PIN.7 (.99). (.) DIMENSIONS: INCHES (MM). (.7) TYP. (.). (.).9 (.9). (.). (.).7 (.). (.). (.).97 (.).9 (.) SEATING PANE -Pin SOP (M). (.7). (.). (.). (.79) PIN DIMENSIONS: INCH (MM). (9.).7 (9.). (.). (.). (.). (.). (7.). (.). (.). (.7). (.). (.).7 (.9) -Pin Plastic DIP (N). (9.). (.) February 999 MIC9/9

16 MIC9/9. (.). (.).99 (.).7 (.7) DIMENSIONS: INCH (MM). (.9). (.). (.). (.9). (.9). (.97). (.) R.7 (.). (.). (.). (.) TYP. (.). (.) MAX MIN -ead MSOP (MM). (.) R.9 (.99). (.9). (.).9 (.) Radius, typ.. (.97). (.). (.). (.9) typ. BOTTOM IEW. (.99).7 (.). (.9) Diam. typ.. (.99).7 (.).9 (.) typ. Seating Plane typ.. (.) Max Uncontrolled ead Diameter. (.7) Min.. (.). (.). (.97). (.). (.97). (.). (.7).9 (.) TO-9 (Z) MICRE INC. 9 FORTUNE DRIE SAN JOSE, CA 9 USA TE () 9- FAX () 9-97 WEB This information is believed to be accurate and reliable, however no responsibility is assumed by for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Inc. 999 Incorporated MIC9/9 February 999

AS ma Low Drop Out Voltage Regulator

AS ma Low Drop Out Voltage Regulator ma Low Drop Out oltage Regulator FEATURES Output Accuracy, 3.3,@ ma Output ery Low Quiescent Current Low Dropout oltage Extremely Tight Load And Line Regulation ery Low Temperature Coefficient Current