Micropower, SC-70, 100mA CMOS LDO Regulator GND 4 V OUT

Transcription

1 SP62/SP624 Micropower, SC-7, ma CMOS DO Regulator FEATURES Tiny 5-pin SC-7 Package Guaranteed ma Output 2.5% Output Voltage Accuracy ow Dropout Voltage: 25 mv at ma ow Quiescent Current: 65 µa ow Ground Current: 5 I = ma ow Shutdown Current: µa MAX Current imit: 9mA Thermal Shutdown: 68 C Good oad and ine Regulation Fast Transient Response: T ON /T OFF =8µs ow Temperature Coefficient Unconditionally Stable with µf Ceramic Fixed Outputs:.8V, 2.5V, 2.7V, 2.85V,.,.V, 5V ma Replacement for 8mA MIC52 & TC6 (SP62) ma Replacement for 8mA NCP52 (SP624) SP62 5 Pin SC7 *connect to GND for enhanced thermal performance APPICATIONS Digital Cordless Phones Cellular Phones PDAs Digital Still Cameras MP Players Battery-Powered Equipment Medical Devices Data Cable DESCRIPTION The SP62/4 is a ma CMOS linear voltage regulator offered in an SC-7 package that reduces board space requirements by 5% over a SOT-2 package. The SP62/4 features low dropout voltage (25mV at ma ), low ground current (5µA at full load) and low, 65µA quiescent current. Designed specifically for hand-held, battery powered devices, the device includes an enable/shutdown pin. Regulator ground current increases only slightly in dropout to extend battery life. The SP62/4 is offered in an industry standard 5-pin SC-7 package. SP62/4 is available in.8v, 2.5V, 2.7V, 2.85V,.,.V and 5. fixed output voltages. FUNCTIONA DIAGRAM GND 4 NC* 2 EN 5 EN 4 NC* GND SP624 5 Pin SC7 5 Now Available in ead Free Packaging 2 Enable Shutdown EN Bandgap Reference.25V + Current imit & Thermal Shutdown GND

2 Supply Input Voltage ( )...- to 7V Output Voltage ( ) to ( +) Enable Input Voltage ( )...- to 7V Power Dissipation (P D )...Internally imited, Note ead Temperature (soldering 5s)...26 C Storage Temperature C to +5 C ABSOUTE MAXIMUM RATINGS (Note ) (Note ) These are stress ratings only and functional operation of the device at these ratings or any other above those indicated in the operation sections of the specifications below is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect reliability. Input Voltage ( ) V to +6V Enable Input Voltage ( )... ZeroV to +6V Junction Temperature (T J ) C to +25 C OPERATING RATINGS (Note 2) Thermal Resistance... (Note ) SC-7-5 (θ JA )... C/W EECTRICA CHARACTERISTICS = +.5V, I = µa, C IN = µf, C = µf, T J = 25 C, unless otherwise noted. The denotes the specifications which apply over the full operating temperature range, unless otherwise specified. PARAMETER MIN TYP MAX UNITS CONDITIONS Output Voltage Accuracy, (V ) O UT % Variation from specified V Output Voltage Temperature C oefficient, Note 4, ( V O UT / T) Minimum Supply Voltage ppm/ C V I I I = µ A = 5mA = ma ine Regulation, ( / V ).5. 2 %/ V V I N IN = ( V +.5V) to 6V SP62-.8V ine Regulation.5. 2 %/ V = 2.8V to 6V oad Regulation, Note 5, ( V O UT ) % I =.ma to ma, V = V + IN SP62-.8V oad Regulation % I.mA to ma, V Dropout Voltage, Note 6, Quiescent Current, (V Ground Pin Current, Note 7, V IN UT ).25 4 mv I = µa O (I ). G ND mv I = 5mA 25 5 mv I = ma 25 µa = IN V N V N =. E. (Shutdown) E.6V (Operating), I = µ A (I ) µa V.6V, I = µa G ND EN 75 µa.6v, I = 5mA 5 25 µa.6v, I = ma Power Supply (PSRR) Rejection Ratio, 74 4 db Frequency = Hz, I = ma Frequency = 4kHz, I = ma Current imit, (I ) ma C Thermal imit 68 5 C Turns On Turns Off Thermal Regulation, ( V O UT / P D ), Note 8.5 %/ W Output Noise (e ) 25 µ Vrms I = 5mA, C =µf, Hz to khz N O 2

3 EECTRICA CHARACTERISTICS = +.5V, I = µa, C IN = µf, C = µf, T J = 25 C, unless otherwise noted. The denotes the specifications which apply over the full operating temperature range, unless otherwise specified. PARAMETER MIN TYP MAX UNITS CONDITIONS ENABE INPUT Enable Input ogic-ow Voltage, Enable Input ogic-high Voltage, Enable Input Current, Turn on Time Turn off Time (I ), ( I I H (V ). 4 V Regulator Shutdown I (V ). 6 V Regulator Enabled I H ). µa V I I <.. µa V I H >.6V (T ) 8 65 µs I =5mA O N (T ) 8 O FN 75 5 µs I I =µ A =ma Note. Note 2. Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Note. The maximum allowable power dissipation at any T A (ambient temperature) is P D (MAX) = (T J (MAX) T A ) / θ JA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. The θ JA of the SP62/4 (SC-7-5) is C/W mounted on a PC board with minimum copper area (see Thermal Considerations section for further details). Note 4. Note 5. Note 6. Note 7. Note 8. Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. oad Regulation is measured at constant junction temperature using low duty cycle pulse testing. Parts are tested for load regulation in the load range. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Dropout Voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value measured at.5v differential. Not applicable to output voltages less than 2.7V. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin current. 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 = 6V for t = ms. Note 9. Devices are ESD sensitive. Handling precautions are recommended. PIN DESCRIPTION PIN NUMBER PIN NAME SP624 DESCRIPTION (FUNCTION) Supply Input 2 GND Ground Connection EN Enable / Shutdown (ogic high=enable; logic low = shutdown) 4 NC No Connection 5 Regulator Output PIN NUMBER PIN NAME SP62 DESCRIPTION (FUNCTION) EN Enable / Shutdown (ogic high=enable; logic low = shutdown) 2 NC No Connection GND Ground Connection 4 Regulator Output 5 Supply Input

4 THEORY OF OPERATION General Overview Enable/Shutdown Operation The SP62/4 is turned off by pulling the EN pin low and turned on by pulling it high. If this enable/shutdown feature is not required, EN should be tied to to keep the regulator output on at all times. Input Capacitor Any good quality ceramic or tantalum capacitor may be used at the input. A small capacitor of about µf is required from to GND if, for instance, a battery is used as the input. Output Capacitor An output capacitor is required between and GND to prevent oscillation. The minimum size of the output capacitor is a.47 µf ceramic. The given datasheet values relate to an IC with a ceramic output capacitor of µf. arger values make the IC more stable which means an improvement of the regulator s transient response. For a lower output current, the output capacitance can be chosen smaller in order to have the same output stability. No oad Stability The SP62/4 will remain stable and in regulation with no external load (other than the internal voltage driver) unlike many other voltage regulators. This is especially important in CMOS RAM keep-alive applications. Thermal Considerations The SP62/4 is designed to provide ma of continuous current in a very tiny package. Maximum power dissipation can be calculated based on the output current and the voltage drop across the part. To determine the maximum power dissipation of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation: P D = (T J(max) - T A ) / θ JA T J(max) is the maximum junction temperature of the die and is 25 C. T A is the ambient operating temperature. θ JA is the junction-toambient thermal resistance for the regulator and is layout dependent. The actual power dissipation of the regulator circuit can be determined using one simple equation: P D = ( - )*I + *I GND Substituting P D(max) for P D and solving for the operating conditions that are critical to the application will give the maximum operating conditions for the regulator circuit. For example, if we are operating the SP62/4 at. output at room temperature, with a minimum footprint layout, we can determine the maximum input voltage for a set output current: P D(max) = [(25 C -25 C) / ( C/W)] = mw. To prevent the device from entering thermal shutdown, maximum power dissipation can not be exceeded. Using the output voltage of. and an output current of ma, the maximum input voltage can be determined. Ground pin current can be taken from the electrical specifications table (.5 ma at ma). The maximum input voltage is determined as follows: mw = (.)*ma + *.5mA After calculations, we find that the maximum input voltage of a. application at ma of output current in an SC-7-5 package is 6.. 4

5 TYPICA PERFORMANCE CHARACTERISTICS 27 C, =, I =.ma, C IN = C = µf unless otherwise specified. V (V) VIN= VIN=5.5V =7V V (V) VIN= VIN=5.5V VIN=7V Output Voltage vs. Temperature (I =.ma) Output Voltage vs. Temperature (I = ma) V (V).4 =. =5.5V.2 =7V V (V) = =5.5V =7V Output Voltage vs. Temperature (I = 5mA) Output Voltage vs. Temperature (I = ma) Iq (ua) = =5.5V =7V V DROP (V) I OAD=mA I OAD=5mA I OAD=mA Quiescent Current vs. Temperature (I = A) Dropout Voltage vs. Temperature.45 ine Regulation at 27 C (V).4.5. Vin = Vin = 5.5V Vin = 7V (V) Io=.mA Io=mA Io=5mA Io=mA Io (ma) (V) Output Voltage vs. Output Current Output Voltage vs. Input Voltage 5

6 TYPICA PERFORMANCE CHARACTERISTICS 27 C, =, I =.ma, C IN = C = µf unless otherwise specified. 6 2 Iq (ua) EN = Vin EN = I GND (ua) 5 5 = = 5.5V = 7V (V) Io (ma) Quiescent Current vs. Input Voltage Ground Current vs. Output Current I GND (ua) (V) Ground Current vs. Input Voltage Io=.mA Io=mA Io=5mA Io=mA V DROP (mv) Io (ma) Dropout Voltage vs. Output Current V SP62-. fixed is toggled, = CTE I =ua Turn-on Characteristic ( =, I = µa) Turn-on Characteristic ( =, I =ma) SP62-. fixed is toggled, =7V CTE I =ua V SP62-. fixed is toggled, =7V CTE I =ma V Turn-on Characteristic ( = 7V, I = µa) Turn on Time ( = 7V, I = ma) 6

7 TYPICA PERFORMANCE CHARACTERISTICS 27 C, =, I =.ma, C IN = C = µf unless otherwise specified. Turn off time SP62-. fixed is toggled, = CTE I =ua V SP62-. fixed is toggled, = CTE I =ma V Turn off Time ( =, I =µa) Turn off Time ( =, I = ma) SP62-. fixed is toggled, =7V CTE I =ua V SP62-. fixed is toggled, =7V CTE I =ma V Turn off Time ( = 7V, I = µa) Turn off Time ( = 7V, I = ma) 2mA I IN SP62-. fixed is toggled, = CTE I =ua 2mA ma 2mA I IN SP62-. fixed is toggled, = CTE I =ma 2mA ma V V ( =, I = µa) In-Rush Current ( =, I = ma) SP62-. fixed = CTE T R =T F =ns 2mV mv SP62-. fixed = CTE T R =T F =ns 2mV mv mv mv -mv -mv ua I ma ua I ma ma ma oad Transient Response ( = ) oad Transient Response ( = ) 7

8 27 C, =, I =.ma, C IN = C = µf unless otherwise specified. TYPICA PERFORMANCE CHARACTERISTICS SP62-. fixed =7V CTE T R =T F =ns 2mV mv SP62-. fixed =7V CTE T R =T F =ns 2mV mv mv mv -mv -mv ua I ma ua I ma ma ma oad Transient Response ( = 7V) oad Transient Response ( = 7V) ine Transient Response 5V 5V 5mV 5mV mv mv SP62-. fixed I = ua C =uf Cer. Cap -5mV -mv SP62-. fixed I = ma C =uf Cer. Cap -5mV -mv ine Transient Response ( =, I =µa) ine Transient Response ( =, I =ma) ine Transient Response ( =7V, I =µa) ine Transient Response ( =7V, I =µa) PSRR, DB ma 5mA - Frequency (Hz) Power Supply Rejection Ratio, V O =V 8

9 PACKAGE: 5 PIN SC-7 D/2 D e 5 4 SIDE VIEW E E/2 E/2 E A A A2 Seating Plane Pin Designator to be within this INDEX AREA (D/2 x E/2) e TOP VIEW 2 b () FRONT VIEW ø Gauge Plane R R ø 2 Seating Plane ø c SYMBO Inch = 25.4 mm MIN NOM MAX MIN NOM MAX A A A c D E E BSC 2. BSC.25 BSC BSC.8 BSC.49 BSC R..42 REF.5 BSC REF.6 BSC - - R Ø 4º 8º 4º 8º Ø 4-2º 4-2º b e e 5 Pin SC-7 JEDEC MO-2 Variation AA Dimensions in Millimeters: Controlling Dimension.65 BSC. BSC SIPEX Pkg Signoff Date/Rev: Dimensions in Inches Conversion Factor:.26 BSC.5 BSC J Oct-5 / Rev A 9

10 ORDERING INFORMATION Part Number Top Temperature Voltage Package Marking Range Option Type SP62EC5--8 W -4 C to +25 C.8V 5 Pin SC-7 SP62EC5--8/TR W -4 C to +25 C.8V 5 Pin SC-7 SP62EC5-2-5 F -4 C to +25 C 2.5V 5 Pin SC-7 SP62EC5-2-5/TR F -4 C to +25 C 2.5V 5 Pin SC-7 SP62EC5-2-7 E -4 C to +25 C 2.7V 5 Pin SC-7 SP62EC5-2-7/TR E -4 C to +25 C 2.7V 5 Pin SC-7 SP62EC D -4 C to +25 C 2.85V 5 Pin SC-7 SP62EC5-2-85/TR D -4 C to +25 C 2.85V 5 Pin SC-7 SP62EC5-- A -4 C to +25 C. 5 Pin SC-7 SP62EC5--/TR A -4 C to +25 C. 5 Pin SC-7 SP62EC5-- C -4 C to +25 C.V 5 Pin SC-7 SP62EC5--/TR C -4 C to +25 C.V 5 Pin SC-7 SP62EC5-5- B -4 C to +25 C 5. 5 Pin SC-7 SP62EC5-5-/TR B -4 C to +25 C 5. 5 Pin SC-7 SP624EC5--8 D -4 C to +25 C.8V 5 Pin SC-7 SP624EC5--8/TR D -4 C to +25 C.8V 5 Pin SC-7 SP624EC5-2-5 J -4 C to +25 C 2.5V 5 Pin SC-7 SP624EC5-2-5/TR J -4 C to +25 C 2.5V 5 Pin SC-7 SP624EC5-2-7 K -4 C to +25 C 2.7V 5 Pin SC-7 SP624EC5-2-7/TR K -4 C to +25 C 2.7V 5 Pin SC-7 SP624EC C to +25 C 2.85V 5 Pin SC-7 SP624EC5-2-85/TR -4 C to +25 C 2.85V 5 Pin SC-7 SP624EC5-- M -4 C to +25 C. 5 Pin SC-7 SP624EC5--/TR M -4 C to +25 C. 5 Pin SC-7 SP624EC5-- H -4 C to +25 C.V 5 Pin SC-7 SP624EC5--/TR H -4 C to +25 C.V 5 Pin SC-7 SP624EC5-5- N -4 C to +25 C 5. 5 Pin SC-7 SP624EC5-5-/TR N -4 C to +25 C 5. 5 Pin SC-7 Available in lead free packaging. To order add "-" suffix to part number. Example: SP624EC5--/TR = standard; SP624EC5---/TR = lead free. Pack quantity is for SC7-5. ead Free packaging can be identified by a Bar to the left of the standard Top Marking. Corporation ANAOG EXCEENCE Sipex Corporation Headquarters and Sales Office 2 South Hillview Drive Milpitas, CA 955 TE: (48) FAX: (48) Sipex Corporation reserves the right to make changes to any products described herein. Sipex does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights nor the rights of others.