ULTRA LOW NOISE 150 ma LOW DROPOUT VOLTAGE REGULATOR WITH ON/OFF CONTROL

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Marjory Garrett
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1 Order this document by MC33263/D Housed in a SOT23 L package, the MC33263 delivers up to 15 m where it exhibits a typical 18 mv dropout. With an incredible noise level of 25 VRMS (over 1 Hz to 1 khz, with a 1 nf bypass capacitor), the MC33263 represents the ideal choice for sensitive circuits, especially in portable applications where noise performance and space are premium. The MC33263 also excels in response time and reacts in less than 25 s when receiving an OFF to ON signal (with no bypass capacitor). Thanks to a novel concept, the MC33263 accepts output capacitors without any restrictions regarding their Equivalent Series Resistance (ESR) thus offering an obvious versatility for immediate implementation. With a typical DC ripple rejection better than 9 db ( 7 1 khz), it naturally shields the downstream electronics against choppy power lines. dditionally, thermal shutdown and short circuit protection provide the final product with a high degree of ruggedness. Features: Very Low Quiescent Current 17 µ (ON, no load), 1 n (OFF, no load) Very Low Dropout Voltage, typical value is 137 mv at an output current of 1 m Very Low Noise with external bypass capacitor (1 nf), typically 25 µvrms over 1 Hz to 1 khz Internal Thermal Shutdown Extremely Tight Line Regulation typically 9 db Ripple Rejection 7 1 khz Line Transient Response: 1 mv for Vin = 3 V Extremely Tight Load Regulation, typically 2 mv at Iout = 15 m Multiple Output Voltages vailable Logic Level ON/OFF Control (TTL CMOS Compatible) ESR can vary from to 3 Functionally and Pin Compatible with TK112xx/B Series pplications: ll Portable Systems, Battery Powered Systems, Cellular Telephones, Radio Control Systems, Toys and Low Voltage Systems GND MC33263 Block Diagram Shutdown 1 ON/OFF Thermal Shutdown Bypass 3 2 Band Gap Reference * Current Limit * ntisaturation * Protection Input Output GND ULTR LOW NOISE 15 m LOW DROPOUT VOLTGE REGULTOR WITH ON/OFF CONTROL SILICON MONOLITHIC INTEGRTED CIRCUIT ON/OFF PIN CONNECTIONS GND BYPSS Device NW SUFFIX PLSTIC PCKGE CSE 318J 1 (SOT 23L) (Top View) Version 5 VIN GND VOUT ORDERING INFORMTION MC33263NW 28R2 MC33263NW 3R2 MC33263NW 32R2 MC33263NW 33R2 MC33263NW 38R2 MC33263NW 4R2 MC33263NW 47R2 MC33263NW 5R V 3. V 3.2 V 3.3 V 3.8 V 4. V 4.75 V 5. V 4 Operating mbient Temperature Range T = 4 to +85 C ll Devices vailable in SOT 23L 6 Lead Package MOTOROL DEVICE DT Motorola, Inc Rev 1 1

2 MXIMUM RTINGS MC33263 Rating Pin # Symbol Value Unit ÁÁÁÁÁÁ Power Supply Voltage ÁÁÁÁ 6 ÁÁÁ ÁÁÁÁÁÁ V in V 12 ÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ Power Dissipation and Thermal Resistance Maximum Power Dissipation PD Internally W NW Suffix, Plastic Package Limited Thermal Resistance, Junction to ir R J 21 C/W Thermal Resistance, Junction to Case R JC C/W Operating mbient Temperature ÁÁÁÁÁÁ T ÁÁÁÁÁÁ 4 to +85 ÁÁÁ C ÁÁÁÁÁÁ ÁÁÁÁÁÁ ÁÁÁÁÁÁ Maximum Junction Temperature TJmax 15 C ÁÁÁÁÁÁ ÁÁÁ Storage Temperature Range Tstg 6 to +15 C DEVICE MRKING XLYW Marking Version ÁÁÁÁÁÁ 1st Digit ÁÁÁÁÁÁ 2.8 V 3. V 3.2 V 3.3 V 3.8 V 4. V 4.75 V 5. V ÁÁÁÁÁÁ Location Code ÁÁÁÁÁ ÁÁÁÁ B ÁÁÁÁ C ÁÁÁÁ D ÁÁÁÁ E ÁÁÁÁ F ÁÁÁÁ G ÁÁÁÁ H ÁÁÁÁÁÁ 2nd Digit ÁÁÁÁÁÁ 3rd Digit L Wafer Lot Traceability 4th/5th Digits YW Date Code Pin 1 Ink Mark Identifier or Solid Pin 1 Dot or Dimple XLYW SOT 23L ELECTRICL CHRCTERISTICS (For typical values T = 25 C, for min/max values T = 4 C to +85 C, Max TJ = 15 C) Characteristics Pin # Symbol Min Typ Max Unit CONTROL ELECTRICL CHRCTERISTICS Input Voltage Range 1 VON/OFF Vin V ON/OFF Input Current (ll versions) ÁÁÁÁ 1 ÁÁÁÁÁ ÁÁÁÁÁ ION/OFF VON/OFF = 2.4 V 2.5 ON/OFF Input Voltages (ll versions) ÁÁÁÁ 1 ÁÁÁÁÁ VON/OFF ÁÁÁÁÁ V Logic, i.e. OFF State.3 Logic 1, i.e. ON State 2.2 CURRENTS PRMETERS ÁÁ Current Consumption in OFF State (ll versions) IQOFF OFF Mode Current: Vin = Vout + 1. V, Iout = m.1 2. Current Consumption in ON State (ll versions) Á IQON ÁÁÁÁÁ ON Mode Sat Current: Vin = Vout + 1. V, Iout = m 17 2 ÁÁÁÁÁ Á Current Consumption in Saturation ON State (ll versions) IQST ON Mode Sat Current: Vin = Vout.5 V, Iout = m 9 14 Current Limit Vin = Vout + 1. V, (ll versions) ÁÁÁ m IMX Output Short circuited (Note 1) Note 1. I out (Output Current) is the measured current when the output voltage drops below.3 V with respect to V out at I out = 3 m. 2 MOTOROL DEVICE DT

3 ELECTRICL CHRCTERISTICS (For typical values T = 25 C, for min/max values T = 4 C to +85 C, Max TJ = 15 C) Characteristics Pin # Symbol Min Typ Max Unit ÁÁÁÁ Vin = Vout + 1. V, T = 25 C, 1. m < Iout < 15 m 4 ÁÁÁÁÁ Vout V 2.8 Suffix Suffix Suffix Suffix Suffix Suffix Suffix Suffix ÁÁÁÁÁ Vin = Vout + 1. V, 4 C < T < 8 C, 4 Vout V 1. m < Iout < 15 m 2.8 Suffix Suffix Suffix Suffix Suffix Suffix Suffix Suffix LINE ND LOD REGULTION, DROPOUT VOLTGES Line Regulation (ll versions) ÁÁÁÁ 4/6 ÁÁÁÁÁ Regline ÁÁÁÁÁ mv Vout + 1. V < Vin < 12 V, Iout = 6 m 2. 1 ÁÁÁ Load Regulation (ll versions) Vin = Vout + 1. V 1 Regload mv Iout = 1. to 6 m ÁÁÁÁ ÁÁÁÁ 8. ÁÁÁ 25 ÁÁÁÁ Iout = 1. to 1 m ÁÁÁÁ ÁÁÁÁ 15 ÁÁÁ 35 ÁÁÁÁ Iout = 1. to 15 m 2 45 ÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ Dropout Voltage (ll versions) 4, 6 mv Vin Vout Iout = 1 m 3 9 Iout = 1 m Iout = 15 m DYNMIC PRMETERS ÁÁÁ Ripple Rejection (ll versions) Vin = Vout + 1. V, Vpp = 1. V, f = 1. khz, Iout = 6 m 6 7 4, 6 db Line Transient Response ÁÁÁÁ 4, 6 mv Vin = Vout + 1. V to Vout + 4. V, Iout = 6 m, 1. d(vin)/dt = 15 mv/s ÁÁÁ Output Noise Voltage (ll versions) 4, 6 VRMS Cout = 1. µf, Iout = 6 m, f = 1 Hz to 1 khz Cbypass = 1 nf 25 Cbypass = 1. nf 4 Cbypass = nf 65 Output Noise Density ÁÁÁÁ 4 ÁÁÁÁÁ VN Cout = 1. µf, Iout = 6 m, f = 1. khz 23 ÁÁÁÁÁ µvrms ÁÁÁÁÁ nv/ Hz Output Rise Time (ll versions) ÁÁÁÁ 4 ÁÁÁÁÁ tr ÁÁÁÁÁ Cout = 1. µf, Iout = 3 m, VON/OFF = to 2.4 V 1% of ON/OFF Signal to 99% of Nominal Output Voltage Without Bypass Capacitor 4 µs With Cbypass = 1 nf 1.1 ms THERML SHUTDOWN Thermal Shutdown (ll versions) ÁÁÁ 15 C MOTOROL DEVICE DT 3

4 DEFINITIONS Load Regulation The change in output voltage for a change in load current at constant chip temperature. Dropout Voltage The input/output differential at which the regulator output no longer maintains regulation against further reductions in input voltage. Measured when the output drops 1 mv below its nominal value (which is measured at 1. V differential), dropout voltage is affected by junction temperature, load current and minimum input supply requirements. Output Noise Voltage The RMS C voltage at the output with a constant load and no input ripple, measured over a specified frequency range. Maximum Power Dissipation The maximum total dissipation for which the regulator will operate within specifications. Quiescent Current Current which is used to operate the regulator chip and is not delivered to the load. Line Regulation The change in input voltage for a change in the input voltage. The measurement is made under conditions of low dissipation or by using pulse techniques such that the average chip temperature is not significantly affected. Line Transient Response Typical over and undershoot response when input voltage is excited with a given slope. Thermal Protection Internal thermal shutdown circuitry is provided to protect the integrated circuit in the event that the maximum junction temperature is exceeded. When activated, typically 15 C, the regulator turns off. This feature is provided to prevent catastrophic failures from accidental overheating. Maximum Package Power Dissipation The maximum package power dissipation is the power dissipation level at which the junction temperature reaches its maximum value i.e. 125 C. The junction temperature is rising while the difference between the input power (VCC X ICC) and the output power (Vout X Iout) is increasing. Depending on ambient temperature, it is possible to calculate the maximum power dissipation, maximum load current or maximum input voltage (see pplication Hints: Protection). The maximum power dissipation supported by the device is a lot increased when using appropriate application design. Mounting pad configuration on the PCB, the board material and also the ambient temperature are affected the rate of temperature rise. It means that when the IC has good thermal conductivity through PCB, the junction temperature will be low even if the power dissipation is great. The thermal resistance of the whole circuit can be evaluated by deliberately activating the thermal shutdown of the circuit (by increasing the output current or raising the input voltage for example). Then you can calculate the power dissipation by subtracting the output power from the input power. ll variables are then well known: power dissipation, thermal shutdown temperature (15 C for MC33263) and ambient temperature. PPLICTION HINTS Input Decoupling s with any regulator, it is necessary to reduce the dynamic impedance of the supply rail that feeds the component. 1 F capacitor either ceramic or tantalum is recommended and should be connected close to the MC33263 package. Higher values will correspondingly improve the overall line transient response. Output Decoupling Thanks to a novel concept, the MC33263 is a stable component and does not require any Equivalent Series Resistance (ESR) neither a minimum output current. Capacitors exhibiting ESRs ranging from a few m up to 3 can thus safely be used. The minimum decoupling value is 1 F and can be augmented to fulfill stringent load transient requirements. The regulator accepts ceramic chip capacitors as well as tantalum devices. Noise Performances Unlike other LDOs, the MC33263 is a true low noise regulator. With a 1 nf bypass capacitor, it typically reaches the incredible level of 25 VRMS overall noise between 1 Hz and 1 khz. To give maximum insight on noise specifications, MOTOROL includes spectral density graphics as well as noise dependency versus bypass capacitor. The bypass capacitor impacts the start up phase of the MC33263 as depicted by the data sheet curves. typical 1 ms settling time is achieved with a 1 nf bypass capacitor. However, thanks to its low noise architecture, the MC33263 can operate without bypass and thus offers a typical 2 s start up phase. In that case, the typical output noise stays lower than 65 VRMS between 1 Hz 1 khz. Protections The MC33263 hosts several protections, conferring natural ruggedness and reliability to the products implementing the component. The output current is internally limited to a minimum of 175 m while temperature shutdown occurs if the die heats up beyond 15 C. These value lets you assess the maximum differential voltage the device can sustain at a given output current before its protections come into play. The maximum dissipation the package can handle is given by: P max T Jmax T R J If TJmax is internally limited to 15 C, then the MC33263 can dissipate up to C. The power dissipated by the MC33263 can be calculated from the following formula: or Ptot,V in I gnd (I out ),,V in V out, I out Vin max Ptot V out I out I I gnd out If a 15 m output current is needed, the ground current is extracted from the data sheet curves: m. For a MC33263NW28R2 (2.8 V), the maximum input voltage will then be 6.48 V, a rather comfortable margin. 4 MOTOROL DEVICE DT

5 Typical pplication The following figure portraits the typical application for the MC33263 where both input/output decoupling capacitors appear. MC33263 Figure 3. Copper Side Component Layout Differential (Vin Vout) Figure 1. Typical MC33263 pplication with Recommended Capacitor Values Input Output Input C3 MC C2 C1 Output C3 1. F MC33263 C2 1. F Rpull up On/Off C1 1 nf ON/OFF s for any low noise designs, particular care has to be taken when tackling Printed Circuit Board (PCB) layout. The figure below gives an example of a layout where stray inductances/capacitances are minimized. This layout is the basis for an MC33263 performance evaluation board where the BNC connectors give the user an easy and quick evaluation mean. Figure 2. Printed Circuit Board MOTOROL DEVICE DT 5

6 Wake up Improvement In portable applications, an immediate response to an enable signal is vital. If noise is not of concern, the MC33263 without a bypass capacitor settles in nearly 2 s and typically delivers 65 VRMS between 1 Hz and 1 khz. In ultra low noise systems, the designer needs a 1 nf bypass capacitor to decrease the noise down to 25 VRMS between 1 Hz and 1 khz. With the adjunction of the 1 nf capacitor, the wake up time expands up to 1 ms as shown on the data sheet curves. If an immediate response is wanted, following figure s circuit gives a solution to charge the bypass capacitor with the enable signal without degrading the noise response of the MC t power on, C4 is discharged. When the control logic sends its wake up signal by going to a high level, the PNP base is momentarily tight to ground. The PNP switch closes and immediately charges the bypass capacitor C1 toward its operating value. fter a few s, the PNP opens and becomes totally transparent to the regulator. This circuit improves the response time of the regulator which drops from 1 ms down to 3 s. The value of C4 needs to be tweaked in order to avoid any bypass capacitor overload during the wake up transient. MC33263 Input Figure 4. PNP Transistor Drives the Bypass Pin when Enable Goes High C3 MC C2 1. F 1. F On/Off C4 47 pf R2 22 k MMBT292LT1 Q1 C1 1 nf Output Figure 5. MC33263 Wake up Improvement with Small PNP Transistor MC33263 Without Wake up Improvement (Typical Response) 1 ms 3 s MC33263 With Wake up Improvement (Typical Response) 6 MOTOROL DEVICE DT

7 The PNP being wired upon the bypass pin, it shall not degrade the noise response of the MC Figure 6 confirms the good behavior of the integrated circuit in this MC33263 area which reaches a typical noise level of 26 VRMS (1 Hz to 1 khz) at Iout = 6 m. nv/sqrt (Hz) Figure 6. Noise Density of the MC33263 with a 1 nf Bypass Capacitor and a Wake up Improvement Network Cbyp = 1 nf Co = 1. F Iout = 6 m 1 5 Vin = 26 Vrms C = 1 1 Hz 1 khz 1 1, 1, Frequency (Hz) 1, 1,, MOTOROL DEVICE DT 7

8 TYPICL PERFORMNCES CHRCTERISTICS Ground Current Performances 7. Figure 1. Ground Current versus Output Current 2.1 Figure 2. Ground Current versus mbient Temperature GROUND CURRENT (m) CO = 1. F GROUND CURRENT (m) CO = 1. F Iout = 6 m OUTPUT CURRENT (m) MBIENT TEMPERTURE ( C) 8 MOTOROL DEVICE DT

9 TYPICL PERFORMNCES CHRCTERISTICS Line Transient Response and Output Voltage Figure 3. Quiescent Current versus Temperature 2 Figure 4. Line Transient Response QUIESCENT CURRENT ON MODE ( ) Vin = 3.8 to 7. V Y1 = 1. mv/div Y2 = 1. V/div X = 1. ms Iout = 6 m dvin = 3.2 V Y1 Y2 TEMPERTURE ( C) Load Transient Response versus Load Current Slope Figure 5. Iout = 3. m to 15 m Figure 6. ISlope = 1 m/s (Large Scale) Iout = 3. m to 15 m Y1 Y2 Y1 = 1 mv/div Y2 = 2 mv/div X = 2 s/div Y1 Y1 = 5 m/div Y2 = 2 mv/div X = 2 s Y2 Y1: OUTPUT CURRENT, Y2: OUTPUT VOLTGE Y1: OUTPUT CURRENT, Y2: OUTPUT VOLTGE Figure 7. ISlope = 6. m/s (Large Scale) Iout = 3. m to 15 m Y1 Figure 8. ISlope = 2. m/s (Large Scale) Iout = 3. m to 15 m Y1 Y1 = 5 m/div Y2 = 2 mv/div X = 1 s Y2 Y1 = 5 m/div Y2 = 2 mv/div X = 2 s Y2 Y1: OUTPUT CURRENT, Y2: OUTPUT VOLTGE Y1: OUTPUT CURRENT, Y2: OUTPUT VOLTGE MOTOROL DEVICE DT 9

10 TYPICL PERFORMNCES CHRCTERISTICS Noise Performances nv/hz Figure 9. Noise Density versus Bypass Capacitor Cbyp = 1 nf 3.3 nf 1 Vn = 65 Cbypass = Vn = 3 Cbypass = 3.3 nf 5 Vn = 25 Cbypass = 1 nf over 1 Hz to 1 khz 1 1 1, nf FREQUENCY (Hz) 1, CO = 1. F Iout = 6 m Tamb = 23 C 1,, RMS NOISE ( V) Figure 1. RMS Noise versus Bypass Capacitor (1 Hz 1 khz) CO = 1. F Iout = 6 m BYPSS CPCITOR (nf) Settling Time Performances SETTLING TIME ( S) Figure 11. Output Voltage Settling Time versus Bypass Capacitor CO = 1. F Iout = 6 m BYPSS CPCITOR (nf) Figure 12. Output Voltage Settling Shape Cbypass = 1 nf 2 s/div 5 mv/div Cbyp = 1 nf Cout = 1. F Iout = 5 m Figure 13. Output Voltage Settling Shape Cbypass = 3.3 nf Figure 14. Output Voltage Settling Shape without Bypass Capacitor 1 s/div 5 mv/div Cbyp = 3.3 nf Cout = 1. F Iout = 5 m 1 s/div 5 mv/div Cbyp = nf Cout = 1. F Iout = 5 m 1 MOTOROL DEVICE DT

11 TYPICL PERFORMNCES CHRCTERISTICS Dropout Voltage Figure 15. Dropout Voltage versus Iout Figure 16. Dropout Voltage versus Temperature DROPOUT (mv) C 2 1 m 25 C 6 m 4 C 15 1 m 1 DROPOUT (mv) m IO (m) TEMPERTURE ( C) Output Voltage Figure 17. Output Voltage versus Temperature Figure 18. Output Voltage versus Iout m 2.84 OUTPUT VOLTGE (V) m 1 m 15 m OUTPUT VOLTGE (V) C 85 C 4 C TEMPERTURE ( C) OUTPUT CURRENT (m) Ripple Rejection Performances (db) Figure 19. Ripple Rejection versus Frequency with 1 nf Bypass Capacitor CO = 1. F Iout = 6 m 1 1, 1, FREQUENCY (Hz) (db) Figure 2. Ripple Rejection versus Frequency without Bypass Capacitor CO = 1. F Iout = 6 m 1 1 1, 1, 1,, FREQUENCY (Hz) MOTOROL DEVICE DT 11

12 OUTLINE DIMENSIONS NW SUFFIX PLSTIC PCKGE CSE 318J 1 (SOT 23L) ISSUE O PIN 1 INK MRK IDENTIFIER D E e.2 M C B M C e1.5 b.1 M C S B S NOTES: 1. DIMENSIONS RE IN MILLIMETERS. 2. INTERPRET DIMENSIONS ND TOLERNCES PER SME Y14.5M, DIMENSION E1 DOES NOT INCLUDE INTERLED FLSH OR PROTRUSION. INTERLED FLSH OR PROTRUSION SHLL NOT EXCEED.23 PER SIDE. 4. DIMENSIONS b ND b2 DO NOT INCLUDE DMBR PROTRUSION. LLOWBLE DMBR PROTRUSION SHLL BE.8 TOTL IN EXCESS OF THE b ND b2 DIMENSIONS T MXIMUM MTERIL CONDITION. 5. TERMINL NUMBERS RE SHOWN FOR REFERENCE ONLY. 6. DIMENSIONS D ND E1 RE TO BE DETERMINED T DTUM PLNE H. H E1 L B c1 (b) ÉÉÉ ÇÇÇ b1 1 c SECTION MILLIMETERS D MIN MX b.35.5 b c.1.25 c1.1.2 D E E e.95 e1 1.9 L Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. Typical parameters which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. ll operating parameters, including Typicals must be validated for each customer application by customer s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/ffirmative ction Employer. Mfax is a trademark of Motorola, Inc. How to reach us: US / EUROPE / Locations Not Listed: Motorola Literature Distribution; JPN: Motorola Japan Ltd.; SPD, Strategic Planning Office, 141, P.O. Box 545, Denver, Colorado or Nishi Gotanda, Shinagawa ku, Tokyo, Japan Customer Focus Center: Mfax : RMFX@ .sps.mot.com TOUCHTONE SI/PCIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, Motorola Fax Back System US & Canada ONLY Ting Kok Road, Tai Po, N.T., Hong Kong HOME PGE: 12 MOTOROL DEVICE MC33263/D DT

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MDC5101R2 SEMICONDUCTOR TECHNICAL DATA SEMICONDUCTOR TECHNICL DT Order this document by MDC511/D The MDC511 inputs TxE and RxE Logic Signals with an accessory input termination option and, allows positive and negative control voltages in accordance