Analog Microelectronics, Inc. AME8801/8812/8840 300mA CMOS LDO n General Description n Features The AME8801/8840 family of positive, linear regulators feature low quiescent current (30µA 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. The AME8801 is stable with an output capacitance of 2.2µF or greater. l Very Low Dropout Voltage l Guaranteed 300mA Output l Accurate to within 1.5% l 30µA Quiescent Current l Over-Temperature Shutdown l Current Limiting l Short Circuit Current Fold-back l Noise Reduction Bypass Capacitor l Power-Saving Shutdown Mode l Space-Saving SOT-25 (SOT-23-5) Package l Factory Pre-set Output Voltages l Low Temperature Coefficient n Applications l l l l n Functional Block Diagram l l IN OUT Overcurrent Shutdown l Instrumentation Portable Electronics Wireless Devices Cordless Phones PC Peripherals Battery Powered Widgets Electronic Scales n Typical Application Thermal Shutdown OUTPUT INPUT EN IN OUT AME8801 BYP BYP R1 GND EN AMP C1 5V V ref = 1 . 2 1 5 V 1 µF C2 C3 1nF 2.2µF R2 GND 1 Analog Microelectronics, Inc. 300mA CMOS LDO AME8801/8812/8840 n Pin Configuration AME8801 SOT-25 Top View 5 AME8801 SOT-26 Top View 4 1 2 1. VIN 2. GND 3. EN 3 4. BYP 5. OUT AME8812 SOT-25 Top View 6 5 4 5 1 2 3 1 1. OUT_1 2. GND 3. BYP 4. EN 5. VIN 6. OUT_2 1. EN 2. GND 3. VIN 2 AME8840 SOT-25 Top View 4 5 3 1 4. OUT 5. BYP 4 2 1. EN 2. GND 3. BYP 3 4. OUT 5. VIN n Ordering Information 2 Part Number Marking Output Voltage Package Operating Temp. Range AME8801AEEV AAFww 3.3V SOT-25 -40 C to +85 C AME8801BEEV AAGww 3.0V SOT-25 -40 C to +85 C AME8801CEEV AAHww 2.8V SOT-25 -40 C to +85 C AME8801DEEV AAIww 2.5V SOT-25 -40 C to +85 C AME8801EEEV AAJww 3.8V SOT-25 -40 C to +85 C AME8801FEEV ABOww 3.6V SOT-25 -40 C to +85 C AME8801GEEV ACFww 3.5V SOT-25 -40 C to +85 C AME8801HEEV AEGww 2.7V SOT-25 -40 C to +85 C AME8801IEEV AEOww 3.4V SOT-25 -40 C to +85 C AME8801JEEV AGQww 2.85V SOT-25 -40 C to +85 C AME8801KEEV AHSww 3.7V SOT-25 -40 C to +85 C AME8801LEEV AJOww 1.5V SOT-25 -40 C to +85 C AME8801MEEV AJPww 1.8V SOT-25 -40 C to +85 C AME8801NEEV AKOww 2.9V SOT-25 -40 C to +85 C AME8801OEEV AKPww 3.1V SOT-25 -40 C to +85 C AME8801SEEV AQXww 5.0V SOT-25 -40 C to +85 C AME8801JEEY ARUww 2.85V SOT-26 -40 C to +85 C Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability. O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O Analog Microelectronics, Inc. AME8801/8812/8840 300mA CMOS LDO n Ordering Information Part Number Output Voltage Package Operating Temp. Range AME8812AEEV 3.3V SOT-25 -40 C to +85 C AME8812BEEV 3.0V SOT-25 -40 C to +85 C AME8812CEEV 2.8V SOT-25 -40 C to +85 C AME8812DEEV 2.5V SOT-25 -40 C to +85 C AME8812EEEV 3.8V SOT-25 -40 C to +85 C AME8812FEEV 3.6V SOT-25 -40 C to +85 C AME8812GEEV 3.5V SOT-25 -40 C to +85 C AME8812HEEV 2.7V SOT-25 -40 C to +85 C AME8812IEEV 3.4V SOT-25 -40 C to +85 C AME8812JEEV 2.85V SOT-25 -40 C to +85 C AME8812KEEV 3.7V SOT-25 -40 C to +85 C AME8812LEEV 1.5V SOT-25 -40 C to +85 C AME8812MEEV 1.8V SOT-25 -40 C to +85 C AME8812NEEV 2.9V SOT-25 -40 C to +85 C AME8812OEEV 3.1V SOT-25 -40 C to +85 C O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability. 3 Analog Microelectronics, Inc. 300mA CMOS LDO AME8801/8812/8840 n Ordering Information Part Number Marking Output Voltage Package Operating Temp. Range AME8840AEEV ALCww 3.3V SOT-25 -40 C to +85 C AME8840BEEV ALDww 3.0V SOT-25 -40 C to +85 C AME8840CEEV ALEww 2.8V SOT-25 -40 C to +85 C AME8840DEEV ALFww 2.5V SOT-25 -40 C to +85 C AME8840EEEV ALGww 3.8V SOT-25 -40 C to +85 C AME8840FEEV ALHww 3.6V SOT-25 -40 C to +85 C AME8840GEEV ALIww 3.5V SOT-25 -40 C to +85 C AME8840HEEV ALJww 2.7V SOT-25 -40 C to +85 C AME8840IEEV ALKww 3.4V SOT-25 -40 C to +85 C AME8840JEEV ALLww 2.85V SOT-25 -40 C to +85 C AME8840KEEV ALMww 3.7V SOT-25 -40 C to +85 C AME8840LEEV ALNww 1.5V SOT-25 -40 C to +85 C AME8840MEEV ALOww 1.8V SOT-25 -40 C to +85 C AME8840NEEV ALPww 2.9V SOT-25 -40 C to +85 C AME8840OEEV ALQww 3.1V SOT-25 -40 C to +85 C O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O Please consult AME sales office or authorized Rep./Distributor for other output voltage and package type availability. 4 Analog Microelectronics, Inc. AME8801/8812/8840 300mA CMOS LDO n Absolute Maximum Ratings Parameter Maximum Unit 8 V Output Current P D / (V IN - V O ) mA Output Voltage GND - 0.3 to V IN + 0.3 V Input Voltage ESD Classification B n Recommended Operating Conditions Parameter Rating Ambient Temperature Range Junction Temperature Unit -40 to +85 o C -40 to +125 o C n Thermal Information Param ete r Thermal Resistance (q ja ) Internal Power Dissipation (P D ) (DT = 100o C) Thermal Resistance (q ja ) Internal Power Dissipation (P D ) (DT = 100o C) Maximum Junction Temperature Ma x im um SOT-25 260 SOT-25 380 SOT-26 260 SOT-26 380 150 Unit o C/W mW o C/W mW o C Caution: Stress above the listed absolute rating may cause permanent damage to the device 5 Analog Microelectronics, Inc. 300mA CMOS LDO AME8801/8812/8840 n Electronic Specifications TA = 25 o C unless otherwise noted Parameter Symbol Input Voltage VIN Output Voltage Accuracy VO Dropout Voltage VDROPOUT Test Condition Min IO=1mA Typ Max Units Note 1 7 V -1.5 1.5 % 1.2V<VO(NOM)<=2.0V IO=300mA VO=VONOM -2.0% 1300 See chart 2.0V<VO(NOM)<=2.8V mV 300 2.8V<VO(NOM) Output Current IO VO>1.2V 300 Current Limit ILIM VO>1.2V 300 Short Circuit Current ISC VO<0.8V 150 300 mA Quiescent Current IQ IO=0mA 30 50 µA Ground Pin Current IGND IO=1mA to 300mA 35 Line Regulation Load Regulation Over Temerature Shutdown REGLINE REGLOAD IO=1mA VIN=VO+1 to VO+2 VO < 2.0V -0.15 2.0V<=VO < 4.0V -0.1 4.0V <= Vo IO=1mA to 300mA mA 450 0.02 0.1 % -0.4 0.2 0.4 % -1 0.2 1 % 150 o o OTH 30 VO Temperature Coefficient TC 30 Output Voltage Noise PSRR eN CO=2.2µF f=10Hz to 100kHz IO=10mA µA % OTS f=1kHz 50 f=10kHz 20 f=100kHz 15 Co=2.2µF 30 IO=100mA mA 0.15 Over Temerature Hysterisis Power Supply Rejection C C ppm/oC dB µVrms 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 µA IEL VEN=0V, VIN=2.7V to 7V 0.5 µA Shutdown Supply Current ISD VIN=5V, VO=0V, VEN<VEL 1 µA Shutdown Output Voltage VO,SD IO=0.4mA, VEN<VEL 0.4 V EN Input Threshold EN Input Bias Current Note1:VIN(min)=VOUT+VDROPOUT 6 400 0.5 0 Analog Microelectronics, Inc. AME8801/8812/8840 300mA CMOS LDO n Detailed Description The AME8801/8840 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 AME8801/8840 switches from voltage mode to current mode when the load exceeds the rated output current. This prevents over-stress. The AME8801/8840 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. 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 ~ 0.01µF. 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 1µA. This pin behaves much like an electronic switch. n External Capacitors The AME8801/8840 is stable with an output capacitor to ground of 2.2µF 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 0.1µF ceramic capacitor with a 10µF 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 0.1µF to have a beneficial effect. 7 Analog Microelectronics, Inc. 300mA CMOS LDO AME8801/8812/8840 Load Step ( 1mA-300mA) Ground Current vs. Input Voltage Vo(5mV/DIV) 45 35 85 O C 30 Output C L =2.2µF C I N =2.2µF 25 25 O C 20 IL(200mA/DIV) µA) Ground Current (µ 40 15 10 5 IL o a d 0 0 0 1 2 3 4 5 6 7 TIME( 20mS/DIV) 8 Input Voltage (V) C L =2µF R L =10Ω C B Y P =1000pF Enable (2V/DIV) Chip Enable Transient Response Output (1V/DIV) 0 C L =2µF R L =10Ω 0 Output (1V/DIV) Enable (2V/DIV) Chip Enable Transient Response 0 0 TIME ( 1mS/DIV) TIME ( 1mS/DIV) Drop Out Voltage vs Load Current Drop Out Voltage vs Output Voltage 250 Dropout Voltage (mV) Drop Out Voltage (mV) 300 250 200 IL O A D= 3 0 0 m A 150 IL O A D = 2 0 0 m A 100 IL O A D = 1 0 0 m A 50 200 150 100 50 0 0 2.5 8 Top to bottom V O U T =2.5V V O U T =2.8V V O U T =3.0V V O U T =3.3V V O U T =3.5V V O U T =3.8V 2.75 3 3.25 3.5 Output Voltage (V) 3.75 4 0 50 100 150 200 Load Current (mA) 250 300 Analog Microelectronics, Inc. AME8801/8812/8840 300mA CMOS LDO Power Supply Rejection Ratio Power Supply Rejection Ratio -20 0 -30 -10 100mA C L =2.2µF Tantalum C B Y P =1000pF -20 -40 -50 PSRR (dB) PSRR (dB) 1mA 100mA -60 100mA C L =2.2µF Tantalum C B Y P =0 -30 -40 -50 10mA 100mA -60 10mA -70 100µA -70 100µA -80 1.0E+01 -80 1.0E+01 1.0E+03 1.0E+05 1.0E+07 Frequency (Hz) Power Supply Rejection Ratio C L = 10 µF Tantalum I L = 100 mA -30 PSRR ( dB) -40 -50 -60 C B Y P = 1 nF -70 C BYP = 0 -40 C B Y P = 100 pF C L = 5.6 µF Ceramic I L = 100 mA -50 -60 C B Y P = 1 nF -70 C B Y P = 10 nF -80 1.0E+01 1.0E+02 1.0E+03 1.0E+04 1.0E+05 1.0E+06 C B Y P = 10 nF -80 1.0E+01 Frequency (Hz) 1.0E+02 1.0E+03 1.0E+04 1.0E+05 Frequency (Hz) Overtemperature Shutdown I OUT (200mA/DIV) Short Circuit Response ILOAD (400mA/DIV) 1.0E+07 Power Supply Rejection Ratio -20 R L O A D =100Ω R S H O R T =0.1Ω 0 R L O A D =6.6Ω VOUT (1V/DIV) 0 VOUT (1V/DIV) PSRR ( dB) -30 1.0E+05 -10 C BYP = 0 C B Y P = 100 pF 1.0E+03 Frequency (Hz) -10 -20 1mA 100µA 100µA 0 0 TIME (2mS/DIV) TIME (0.5Sec/DIV) 9 Analog Microelectronics, Inc. 300mA CMOS LDO AME8801/8812/8840 Noise Measurement IOUT (200mA/DIV) Current Limit Response R L O A D =3.3Ω CL = 2.2µF NO FILTER Vo (1mV/ DIV) VOUT (1V/DIV) 0 0 TIME (2mS/DIV) TIME (20mS/DIV) Transient Line Response VO (1mV/DIV) VIN DC = 5.0V CL = 2.2µF Output Current (mA) VIN (1V/DIV) Safe Operating Area 300 SOT-23-5 100 10 0.1 TIME (2mS/DIV) 10 1.0 Input-Output Voltage Differential (V) 8.0 Analog Microelectronics, Inc. AME8801/8812/8840 300mA CMOS LDO Stability vs. ESR vs I LOAD 10000 Stability vs. ESR vs I LOAD 10000 Unstable Region Unstable Region 1000 1000 C L =1µF 10 Stable Region 1 C L =2µF 100 Ω) ESR (Ω ESR (Ω Ω) 100 0.1 10 Stable Region 1 0.1 Untested Region Untested Region 0.01 0.01 0 50 100 150 0 200 50 ILOAD (mA) 150 200 ILOAD (mA) Stability vs. ESR vs I LOAD Stability vs. ESR vs I LOAD 10000 10000 Unstable Region Unstable Region 1000 1000 Ω) ESR (Ω 10 Stable Region 1 C L =10µF 100 C L =3µF 100 Ω) ESR (Ω 100 10 Stable Region 1 0.1 0.1 0.01 Untested Region 0.01 0 50 100 ILOAD (mA) 150 Untested Region 0.001 200 0 50 100 150 200 ILOAD (mA) 11 Analog Microelectronics, Inc. 300mA CMOS LDO AME8801/8812/8840 Load Regulation vs. Temp. 35 0.58 34 0.56 Load Regulation (%) Quiescent Current @ 5V (uA) Quiescent Current vs.Temp. 33 32 31 30 29 28 27 0.54 0.52 0.50 0.48 0.46 0.44 0.42 0.40 -45 -5 25 55 85 -45 Temperature (0C) 0.9 0.8 Dropout Voltage @ 300mA (mV) Shut Down Current (uA) 1.0 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 -5 25 55 85 0 Temperature ( C) EN pin LO bias current (uA) EN Pin LO Bias Current vs. Temp. -0.20 -0.25 -0.30 -0.35 -0.40 -0.45 -0.50 -45 -5 25 55 0 12 Temperature ( C) 25 55 85 Dropout Voltage vs. Temp. Shut Down Current vs. Temp. -45 -5 Temperature (0C) 85 220 210 200 V O U T =3V 190 180 170 160 150 -45 -5 25 55 Temperature ( 0 C) 85 Analog Microelectronics, Inc. AME8801/8812/8840 300mA CMOS LDO n Package Dimension SOT-25 A MILLIMETERS MIN MAX 1.00 1.45 INCHES MIN MAX 0.0394 0.0571 A1 0.00 0.15 0.0000 0.0591 A2 b C D 0.70 0.35 0.08 2.70 1.25 0.55 0.25 3.10 0.0276 0.0138 0.0031 0.1063 0.0492 0.0217 0.0098 0.1220 E e H L 1.40 1.80 1.90 BSC 0.0551 0.0709 0.07480 BSC 2.60 0.30 0.1024 0.0118 θ1 S1 0 0.85 SYMBOLS ° 3.00 ° 10 1.05 ° 0 0.0335 0.1181 ° 10 0.0413 SOT-26 MILLIMETERS MIN MAX 1.00 1.40 INCHES MIN MAX 0.0394 0.0551 A2 0.00 0.70 0.15 1.25 0.0000 0.0276 0.0591 0.0492 b C 0.35 0.08 0.50 0.25 0.0138 0.0031 0.0197 0.0098 D 2.70 3.10 0.1063 0.1220 E e H 1.40 1.80 0.0551 0.0709 1.90 BSC 2.60 3.00 0.0748 BSC 0.1024 0.1181 L 0.35 0.0138 θ1 S1 0 0.85 SYMBOLS A A1 ° ° 9 1.05 ° 0 0.0335 ° 9 0.0413 13 www.analogmicro.com E-Mail: [email protected] Life Support Policy: These products of Analog Microelectronics, Inc. are not authorized for use as critical components in lifesupport devices or systems, without the express written approval of the president of Analog Microelectronics, Inc. Analog Microelectronics, 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. Analog Microelectronics, Inc. , August 2001 Document: 2006-DS8801/8812/8840-E Corporate Headquarters Asia Pacific Headquarters Analog Microelectronics, Inc. AME, Inc. 3100 De La Cruz Blvd. Suite 201 Santa Clara, CA. 95054-2046 2F, 187 Kang-Chien Road, Nei-Hu District Taipei 114, Taiwan, R.O.C. Tel : (408) 988-2388 Fax: (408) 988-2489 Tel : 886 2 2627-8687 Fax : 886 2 2659-2989