AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n General Description The AME8801/8812/8840 family of positive, linear regulators feature low quiescent current (30A typ.) with low dropout voltage, making them ideal for battery applications. The space-saving SOT-23-5 package is attractive for "Pocket" and "Hand Held" applications. These rugged devices have both Thermal Shutdown, and Current Fold-back to prevent device failure under the "Worst" of operating conditions. In applications requiring a low noise, regulated supply, place a 1000 pF capacitor between Bypass and Ground. n Functional Block Diagram IN OUT Overcurrent Shutdown Thermal Shutdown EN BYP R1 AMP The AME8801 is stable with an output capacitance of 2.2F or greater. n Features l l l l l l l l l Very Low Dropout Voltage Guaranteed 300mA Output Accurate to within 1.5% 30A Quiescent Current Over-Temperature Shutdown Current Limiting Short Circuit Current Fold-back Noise Reduction Bypass Capacitor Power-Saving Shutdown Mode GND n Typical Application INPUT IN l Space-Saving SOT-25, SOT-26 Package AME8801 OUT AME8812 AME8840 BYP l Factory Pre-set Output Voltages l Low Temperature Coefficient R2 Vref=1.215V 5V GND OUTPUT EN C1 C2 C3 1 F 1000pF 2.2 F n Applications l l l l l l l Instrumentation Portable Electronics Wireless Devices Cordless Phones PC Peripherals Battery Powered Widgets Electronic Scales 1 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Pin Configuration SOT-25 Top View 5 4 AME8801 1 2 SOT-26 Top View AME8801 1. VIN 2. GND 3. EN 4. BYP 5. OUT 6 1 3 4 AME8812 1 2 2 3 4 AME8801 SOT-25 Top View 5 5 2 3 AME8801 1. OUT_1 2. GND 3. BYP 4. EN 5. VIN 6. OUT_2 SOT-25 Top View AME8812 1. EN 2. GND 3. VIN 4. OUT 5. BYP 5 4 AME8840 1 2 3 AME8840 1. EN 2. GND 3. BYP 4. OUT 5. VIN AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Ordering Information AME8801 x x x x x AME8812 x x x x x AME8840 x x x x x Special Feature Number of Pins Package Type Operating Temperature Range Product Grade or Option Product Grade or Option A: B: C: D: E: F: G: H: I: J: K: L: M: N: O: S: 3.3V 3.0V 2.8V 2.5V 3.8V 3.6V 3.5V 2.7V 3.4V 2.85V 3.7V 1.5V 1.8V 2.9V 3.1V 5.0V Operating Temperature Range E: -40OC to 85OC Package Type E: SOT-2X Number of Pins V: 5 Y: 6 Special Feature L: Low Profile Y: Lead Free & Low Profile Z: Lead Free 3 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Ordering Information 4 Part Number Marking Output Voltage Package Operating Temp. Range AME8801AEEV AAFww 3.3V SOT-25 - 40oC to + 85oC AME8801BEEV AAGww 3.0V SOT-25 - 40oC to + 85oC AME8801CEEV AAHww 2.8V SOT-25 - 40oC to + 85oC AME8801CEEVZ AAHww 2.8V SOT-25 - 40oC to + 85oC AME8801DEEV AAIww 2.5V SOT-25 - 40oC to + 85oC AME8801EEEV AAJww 3.8V SOT-25 - 40oC to + 85oC AME8801FEEV ABOww 3.6V SOT-25 - 40oC to + 85oC AME8801FEEVZ ABOww 3.6V SOT-25 - 40oC to + 85oC AME8801GEEV ACFww 3.5V SOT-25 - 40oC to + 85oC AME8801HEEV AEGww 2.7V SOT-25 - 40oC to + 85oC AME8801IEEV AEOww 3.4V SOT-25 - 40oC to + 85oC AME8801JEEV AGQww 2.85V SOT-25 - 40oC to + 85oC AME8801JEEVZ AGQww 2.85V SOT-25 - 40oC to + 85oC AME8801KEEV AHSww 3.7V SOT-25 - 40oC to + 85oC AME8801LEEV AJOww 1.5V SOT-25 - 40oC to + 85oC AME8801MEEV AJPww 1.8V SOT-25 - 40oC to + 85oC AME8801NEEV AKOww 2.9V SOT-25 - 40oC to + 85oC AME8801OEEV AKPww 3.1V SOT-25 - 40oC to + 85oC AME8801OEEVZ AKPww 3.1V SOT-25 - 40oC to + 85oC AME8801SEEV AQXww 5.0V SOT-25 - 40oC to + 85oC AME8801JEEY ARUww 2.85V SOT-26 - 40oC to + 85oC AME8812AEEV ASEww 3.3V SOT-25 - 40oC to + 85oC AME8812BEEV ASFww 3.0V SOT-25 - 40oC to + 85oC AME8812CEEV AUGww 2.8V SOT-25 - 40oC to + 85oC AME8812DEEV ARSww 2.5V SOT-25 - 40oC to + 85oC AME8812DEEVZ ARSww 2.5V SOT-25 - 40oC to + 85oC AME8812EEEV AUHww 3.8V SOT-25 - 40oC to + 85oC AME8812FEEV AUIww 3.6V SOT-25 - 40oC to + 85oC AME8812GEEV AUJww 3.5V SOT-25 - 40oC to + 85oC AME8812HEEV AUKww 2.7V SOT-25 - 40oC to + 85oC AME8812IEEV AULww 3.4V SOT-25 - 40oC to + 85oC AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Ordering Information (contd.) Part Number Marking Output Voltage Package Operating Temp. Range AME8812JEEV ARFww 2.85V SOT-25 - 40oC to + 85oC AME8812JEEVZ ARFww 2.85V SOT-25 - 40oC to + 85oC AME8812KEEV AUMww 3.7V SOT-25 - 40oC to + 85oC AME8812LEEV AUNww 1.5V SOT-25 - 40oC to + 85oC AME8812MEEV AUOww 1.8V SOT-25 - 40oC to + 85oC AME8812MEEVZ AUOww 1.8V SOT-25 - 40oC to + 85oC AME8812NEEV AUPww 2.9V SOT-25 - 40oC to + 85oC AME8812OEEV AUQww 3.1V SOT-25 - 40oC to + 85oC AME8812SEEV AURww 5.0V SOT-25 - 40oC to + 85oC AME8840AEEV ALCww 3.3V SOT-25 - 40oC to + 85oC AME8840BEEV ALDww 3.0V SOT-25 - 40oC to + 85oC AME8840CEEV ALEww 2.8V SOT-25 - 40oC to + 85oC AME8840DEEV ALFww 2.5V SOT-25 - 40oC to + 85oC AME8840EEEV ALGww 3.8V SOT-25 - 40oC to + 85oC AME8840FEEV ALHww 3.6V SOT-25 - 40oC to + 85oC AME8840GEEV ALIww 3.5V SOT-25 - 40oC to + 85oC AME8840HEEV ALJww 2.7V SOT-25 - 40oC to + 85oC AME8840IEEV ALKww 3.4V SOT-25 - 40oC to + 85oC AME8840JEEV ALLww 2.85V SOT-25 - 40oC to + 85oC AME8840KEEV ALMww 3.7V SOT-25 - 40oC to + 85oC AME8840LEEV ALNww 1.5V SOT-25 - 40oC to + 85oC AME8840MEEV ALOww 1.8V SOT-25 - 40oC to + 85oC AME8840NEEV ALPww 2.9V SOT-25 - 40oC to + 85oC AME8840OEEV ALQww 3.1V SOT-25 - 40oC to + 85oC Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability. 5 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Absolute Maximum Ratings Parameter Maximum Unit 8 V Output Current PD / (VIN - VO) mA Output Voltage GND - 0.3 to VIN + 0.3 V Input Voltage ESD Classification B Caution: Stress above the listed absolute maximum rating may cause permanent damage to the device n Recommended Operating Conditions Parameter Ambient Temperature Range Junction Temperature Rating Unit - 40 to + 85 o - 40 to + 125 o C C n Thermal Information Parameter Thermal Resistance (ja) Internal Power Dissipation (PD ) (DT = 100oC) Thermal Resistance (ja) Internal Power Dissipation (PD ) (DT = 100oC) Maximum Junction Temperature 6 Maximum SOT-25 260 SOT-25 380 SOT-26 260 SOT-26 380 150 Unit o C/W mW o C/W mW o C AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Electrical Specifications TA = 25OC unless otherwise noted Parameter Input Voltage VIN Output Voltage Accuracy VO Dropout Voltage Test Condition Symbol V DROPOUT Max Units Note 1 7 V IO=1mA -1.5 1.5 IO=300mA -2.5 2.5 IO=300mA VO=VO(NOM) -2.0% Min Typ 1.2V<=VO(NOM)<=2.0V 1300 2.0V<VO(NOM)<=2.8V 400 2.8V<V O(NOM) 300 % mV IO VO>1.2V 300 Current Limit ILIM VO>1.2V 300 Short Circuit Current, Note2 ISC VO<0.8V 150 300 mA Quiescent Current IQ IO=0mA 30 50 A Ground Pin Current IGND IO=1mA to 300mA 35 Output Current Line Regulation Load Regulation REGLINE REGLOAD mA 450 mA A 1.2V <= V O <= 1.4V -0.2 0.2 IO=1mA 1.4V < V O <= 2.0V -0.15 0.15 V IN =VO+1 to VO+2 2.0V < V O < 4.0V -0.1 0.02 0.1 4.0V <= Vo -0.4 0.2 0.4 -1 0.2 1 IO=1mA to 300mA % % Over Temerature Shutdown OTS 150 o Over Temerature Hysterisis OTH 30 o VO Temperature Coefficient TC 30 Power Supply Rejection Output Voltage Noise PSRR eN IO=100mA CO=2.2F f=10Hz to 100kHz IO=10mA f=1kHz 50 f=10kHz 20 f=100kHz 15 Co=2.2F 30 C C ppm/ oC dB Vrms VEH VIN =2.7V to 7V 2.0 Vin V VEL VIN =2.7V to 7V 0 0.4 V IEH VEN =VIN , VIN =2.7V to 7V 0.1 A IEL VEN =0V, VIN =2.7V to 7V 0.5 A Shutdown Supply Current ISD VIN =5V, VO=0V, VEN <VEL 1 A Shutdown Output Voltage VO,SD IO=0.4mA, VEN <VEL 0.4 V EN Input Threshold EN Input Bias Current 0.5 0 Note1: VIN(MIN)=VOUT+VDROPOUT Note2: To prevent the Short Circuit Current protection feature from being prematurely activated, the input voltage must be applied before a current source load is applied. 7 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Detailed Description The AME8801/8812/8840 family of CMOS regulators contain a PMOS pass transistor, voltage reference, error amplifier, over-current protection, and thermal shutdown. The P-channel pass transistor receives data from the error amplifier, over-current shutdown, and thermal protection circuits. During normal operation, the error amplifier compares the output voltage to a precision reference. Over-current and Thermal shutdown circuits become active when the junction temperature exceeds 150oC, or the current exceeds 300mA. During thermal shutdown, the output voltage remains low. Normal operation is restored when the junction temperature drops below 120oC. The AME8801/8812/8840 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8801/8812/ 8840 also incorporates current foldback to reduce power dissipation when the output is short circuited. This feature becomes active when the output drops below 0.8volts, and reduces the current flow by 65%. Full current is restored when the voltage exceeds 0.8 volts. n External Capacitors The AME8801/8812/8840 is stable with an output capacitor to ground of 2.2F or greater. Ceramic capacitors have the lowest ESR, and will offer the best AC performance. Conversely, Aluminum Electrolytic capacitors exhibit the highest ESR, resulting in the poorest AC response. Unfortunately, large value ceramic capacitors are comparatively expensive. One option is to parallel a 0.1F ceramic capacitor with a 10F Aluminum Electrolytic. The benefit is low ESR, high capacitance, and low overall cost. A second capacitor is recommended between the input and ground to stabilize Vin. The input capacitor should be at least 0.1F to have a beneficial effect. 8 A third capacitor can be connected between the BYPASS pin and GND. This capacitor can be a low cost Polyester Film variety between the value of 0.001 ~ 0.01F. A larger capacitor improves the AC ripple rejection, but also makes the output come up slowly. This "Soft" turn-on is desirable in some applications to limit turn-on surges. All capacitors should be placed in close proximity to the pins. A "Quiet" ground termination is desirable. This can be achieved with a "Star" connection. n Enable The Enable pin normally floats high. When actively, pulled low, the PMOS pass transistor shuts off, and all internal circuits are powered down. In this state, the quiescent current is less than 1A. This pin behaves much like an electronic switch. AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 Load Step (1mA-300mA) Ground Current vs. Input Voltage 45 85 C 35 30 25 O 25 C 20 Output VO (5mV/DIV) O 15 IL(200mA/DIV) Ground Current ( A) 40 10 5 0 0 1 2 3 4 5 6 7 I Load 0 8 TIME( 20mS/DIV) Input Voltage (V) CL=2F RL=10 CBYP=1000pF Output (1V/DIV) 0 0 Enable (2V/DIV) Chip Enable Transient Response CL=2F RL=10 0 Output (1V/DIV) Enable (2V/DIV) Chip Enable Transient Response 0 TIME ( 1mS/DIV) TIME ( 1mS/DIV) Drop Out Voltage vs. Output Voltage Drop Out Voltage vs. Load Current 300 250 200 Dropout Voltage (mV) 250 Drop Out Voltage (mV) CL =2.2F C IN =2.2F I LOAD =300mA 150 I LOAD =200mA 100 I LOAD =100mA 50 0 Top to bottom VOUT=2.5V VOUT=2.8V VOUT=3.0V VOUT=3.3V VOUT=3.5V VOUT=3.8V 200 150 100 50 0 2.5 2.75 3 3.25 3.5 Output Voltage (V) 3.75 4 0 50 100 150 200 250 300 Load Current (mA) 9 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 Power Supply Rejection Ratio Power Supply Rejection Ratio 0 -20 100mA CL=2.2F Tantalum CBYP=1000pF 1mA 100mA 100mA CL=2.2F Tantalum Tantalum C BYP =0 -20 -40 -50 -10 PSRR (dB) PSRR (dB) -30 -30 -40 -50 10mA 100mA -60 -60 10mA -70 -70 100A 1K 100K 10 10M 1K 100K Power Supply Rejection Ratio Power Supply Rejection Ratio -10 -10 CBYP = 0 CBYP = 100 pF -20 -20 CL = 10 F Tantalum IL = 100 mA -40 -30 PSRR ( dB) -30 -50 -60 CL = 5.6 F Ceramic IL = 100 mA CBYP = 0 CBYP = 100 pF -40 -50 -60 CBYP = 1 nF CBYP = 1 nF -70 -70 CBYP = 10 nF -80 10 -80 10 100 1K 10K 100K 1M CBYP = 10 nF 100 1K 10K 100K Frequency (Hz) Frequency (Hz) Overtemperature Shutdown R LOAD =100 R SHORT =0.1 0 R LOAD=6.6 Vout (1V/DIV) VOUT (1V/DIV) 0 I OUT (200mA/DIV) Short Circuit Response 0 TIME (2mS/DIV) 10 10M Frequency (Hz) Frequency (Hz) PSRR ( dB) 1mA -80 -80 10 ILoad(400mA/DIV) 100 A 100 A 100A 0 TIME (0.5Sec/DIV) AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 Noise Measurement IOUT(200mA/DIV) Current Limit Response VOUT(1V/DIV) 0 Vo (1mV DIV) RLoad=3.3 CL=2.2F No Filter 0 TIME (20ms/DIV) TIME (2mS/DIV) Safe Operating Area Output Current (mA) VIN(1V/DIV) Line Transient Response VO(1mV/DIV) VINDC=5.0V CL=2.2F 300 SOT-23-5 100 10 1.0 0.1 TIME (2mS/DIV) Stability vs. ESR vs. ILoad Stability vs. ESR vs. ILoad 10000 10000 Unstable Region Unstable Region 1000 1000 CL=1F 10 Stable Region 1 CL=2F 100 ESR ( ) 100 ESR ( ) 8.0 Input-Output Voltage Differential (V) 10 Stable Region 1 0.1 0.1 Untested Region Untested Region 0.01 0.01 0 50 100 150 ILOAD (mA) 200 0 50 100 150 200 ILOAD (mA) 11 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 Stability vs. ESR vs. ILoad Stability vs. ESR vs. ILoad 10000 10000 Unstable Region Unstable Region 1000 1000 10 100 ESR ( ) ESR ( ) CL=10F CL=3F 100 Stable Region 10 Stable Region 1 1 0.1 Untested Region Untested Region 0.1 0.01 0.001 0.01 0 50 100 150 200 0 50 ILOAD (mA) 200 Load Regulation vs. Temp. 0.58 34 0.56 Load Regulation (%) Quiescent Current @ 5V (uA) Quiescent Current vs. Temp. 33 32 31 30 29 28 0.54 0.52 0.50 0.48 0.46 0.44 0.42 -5 25 55 0.40 -45 85 -5 25 55 85 Temperature (oC) Temperature (oC) Shut Down Current vs. Temp. EN pin LO bias Current vs. Temp. 1.0 -0.20 EN pin LO bias current (uA) 0.9 Shut Down Current (uA) 150 ILOAD (mA) 35 27 -45 100 0.8 0.7 0.6 0.5 0.4 0.3 0.2 -0.25 -0.30 -0.35 -0.40 -0.45 0.1 0.0 -45 12 -5 25 Temperature (oC) 55 85 -0.50 -45 -5 25 Temperature (oC) 55 85 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 PG VOL vs. Temp. 0.45 210 0.40 PG VOL @ 0.4mA (V) Dropout Voltage @ 300mA (mV) Dropout Voltage vs. Temp. 220 200 190 180 170 0.30 0.25 0.20 160 150 -45 0.35 -5 25 55 o Temperature ( C) 85 0.15 -45 -5 25 55 85 Temperature (oC) 13 AME, Inc. 300mA CMOS LDO AME8801 / 8812 / 8840 n Package Dimension SOT-25 Top View Side View SYMBOLS D L MIN E H MILLIMETERS 1 c S1 A 0.15 0.0000 0.0059 b 0.30 0.55 0.0118 0.0217 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 e e1 S1 1.90 BSC 2.60 3.00 0.37BSC 0o 10o 0.07480 BSC 0.10236 0.11811 0.0146BSC 0o 10o 0.95BSC 0.0374BSC MILLIMETERS INCHES A1 A MAX 0.0472REF 0.00 L Front View MIN A1 H e MAX 1.20REF INCHES b SOT-26 Side View Top View SYMBOLS D e E H A c 1 MAX 0.0000 0.0059 b 0.30 0.55 0.0118 0.0217 D 2.70 3.10 0.1063 0.1220 E 1.40 1.80 0.0551 0.0709 A e1 A1 0.0472REF 0.15 L 14 MIN 0.00 H Front View 1.20REF A1 e S1 b MAX L MIN S1 1.90 BSC 2.60 3.00 0.37REF 0o 10o 0.95REF 0.0748 BSC 0.10236 0.11811 0.0146REF 0o 10 o 0.0374REF www.ame.com.tw E-Mail: sales@ame.com.tw Life Support Policy: These products of AME, Inc. are not authorized for use as critical components in life-support devices or systems, without the express written approval of the president of AME, Inc. AME, Inc. reserves the right to make changes in the circuitry and specifications of its devices and advises its customers to obtain the latest version of relevant information. AME, Inc. , November 2003 Document: 2006-DS8801/8812/8840-K Corporate Headquarter U.S.A. (Subsidiary) AME, Inc. Analog Microelectronics, Inc. 2F, 189 Kang-Chien Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. 3100 De La Cruz Blvd., Suite 201 Santa Clara, CA. 95054-2046 Tel : 886 2 2627-8687 Fax: 886 2 2659-2989 Tel : (408) 988-2388 Fax : (408) 988-2489