Advanced Monolithic Systems AMS3102 300mA LOW DROPOUT VOLTAGE REGULATOR RoHS compliant FEATURES APPLICATIONS • Fixed and Adjustable Versions Available • Output Current in excess of 300mA • Very Low Quiescent Current • Reverse Battery Protection • Input-output Differential less than 0.6V • Short Circuit Protection • Internal Thermal Overload Protection • Load Dump Protection • Overvoltage Protection • Mirror Image Insertion Protection • ON/OFF Pin •External PNP Drive • Cellular Telephones • Portable Consumer Equipment • Portable (Notebook) Computers • Battery Powered Systems • Portable Instrumentation • Radio Control Systems • CD/DVD drives GENERAL DESCRIPTION The AMS3102 series consists of positive fixed and adjustable voltage regulators ideally suited for use in battery-powered systems. These devices feature very low quiescent current of 0.3mA or less when supplying 10mA loads. This unique characteristic and the extremely low input-output differential required for proper regulation (0.25V for output currents of 100mA) make the AMS3102 ideal to use for standby power systems. Internal circuitry of AMS3102 is protected from input fault conditions caused by reverse battery installation or input voltages that exceed maximum rated input voltage. During line transients, such as load dump (40V) when the input voltage to the regulator can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both internal circuits and the load. The AMS3102 series also includes internal current limiting, thermal shutdown, and is able to withstand temporary power-up with mirror-image insertion. The AMS3102 is offered in the 3-pin TO-92 package, SOT-89, 3 lead SOT-23, 5 lead SOT-23 and 8 lead SOIC packages. The device is provided with On/Off pin in SOT-23 5L and in 8 lead SOIC package. ORDERING INFORMATION OUTPUT VOLTAGE FIXED PACKAGE TYPE TO-92 AMS3102AN-X AMS3102N-X SOT-89 AMS3102AL-X AMS3102L-X AMS3102ALR-X AMS3102LR-X ADJ. X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V. R = Reverse pin-out option www.advanced-monolithic.com 3L SOT-23 AMS3102AM-X AMS3102M-X TEMP. 5L SOT-23 AMS3102AM1-X AMS3102M1-X SO-8 AMS3102AS-X AMS3102S-X RANGE -40ºC to 85ºC -40ºC to 85ºC AMS3102CM1 AMS3102CS -40ºC to 85ºC updated April 24, 2009 AMS3102 ABSOLUTE MAXIMUM RATINGS (Note 1) Overvoltage Protection Internal Power Dissipation (Note 4) Maximum Input Voltage Storage Temperature ESD 24V to 40V Internally Limited 22V -65°C to +150°C 2000V OPERATING RATINGS (Note 1) Input Voltage Range Junction Temperature Lead Temperature (Soldering 25 sec) 4V to 22V +125°C 265°C ELECTRICAL CHARACTERISTICS Electrical Characteristics at VIN =VO +1V, IO =10mA, TJ=25°C, C2 = 22µF unless otherwise specified. PARAMETER CONDITIONS AMS3102A-X Min. Typ. Max. AMS3102-X Min. Typ. Max. Units 21 21 22 V +3.0 % Fixed Output Voltage Versions Maximum Operating Input Voltage Output Voltage Tolerance (VIN+1V) ≤VIN ≤21V, IO=100 mA 22 -1.0 +1.0 - 3.0 + 3.0 -3.0 Line Regulation Load Regulation Dropout Voltage Quiescent Current % ± 5.0 -40°C ≤TJ ≤125°C (VIN+1V) ≤VIN ≤ 15V 5 10 5 10 mV 9V ≤VIN ≤ 21V 8 30 8 30 mV 5mA ≤IO ≤ 100 mA 30 50 30 50 mV 5mA ≤10 ≤ 200 mA 50 70 50 70 mV IO = 100 mA 250 300 300 400 mV IO = 200 mA 500 600 500 600 mV IO ≤ 10 mA, 0.3 0.5 0.3 0.5 mA IO = 100 mA 3 4 3 4 mA IO ≤ 200 mA (Note 5) 9 12 9 12 mA 500 500 Output Noise Voltage 10Hz-100kHz, COUT = 100µF Output Impedance 100mADC and 10mArms,100Hz=10kHz Ripple Rejection fO =120Hz 55 80 80 dB Maximum Line Transient RL = 500Ω, VO ≤ 5.5V 35 40 35 40 V -35 -40 -35 -40 V -35 -40 -35 -40 V 200 µV rms 200 mΩ T = 1ms, τ ≤100ms Reverse Polarity Input Voltage, D/C Reverse Polarity Input Voltage, Transient RL = 500Ω, T = 1ms, τ ≤100ms www.advanced-monolithic.com updated April 24, 2009 AMS3102 ELECTRICAL CHARACTERISTICS Electrical Characteristics at VIN =6V, VOUT =3V IO =10mA, TJ=25°C, R1 =27k, C2 = 2µF unless otherwise specified. PARAMETER Min. AMS3102C Typ. Max. 1.210 1.235 1.26 V 1.20 1.235 1.270 V 20 V CONDITIONS (Note 2) Units Adjustable Version Reference Voltage IO ≤ 100 mA, -40°C ≤TJ ≤ 125°C, R1=27k, Measured from VOUT to Adjust Pin Output Voltage Range 2 Line Regulation VOUT + 1V ≤VIN ≤ 21V .02 1.5 mV/V Load Regulation 5mA ≤IO ≤ 100 mA 0.3 1 % 5mA ≤IO ≤ 200 mA 1 2 % 50 300 500 200 400 600 mV mV mV 0.5 4 0.5 mA mA mA Dropout Voltage IO ≤ 10 mA IO = 100 mA IO = 200 mA (Note 5) Quiescent Current IO = 10 mA During Shutdown RL = 500Ω 0.3 3 0.3 Output Noise Voltage 10Hz-100kHz 100 Output Impedance 100mADC and 10mArms,100Hz=10kHz 40 Long Term Stability T =1000hr 0.4 %/1000hr Ripple Rejection fO = 120Hz 0.02 dB IO = 100 mA Maximum Operating Input Voltage 21 Maximum Line Transient IO = 10mA, Reference Voltage ≤ 1.5V µVrms/V 200 mΩ V 22 35 40 V T = 1ms, τ ≤100ms Reverse Polarity Input Voltage, D/C RL = 500Ω, VO ≥ -0.3V -35 -40 V Reverse Polarity Input Voltage, Transient RL = 500Ω, T = 1ms, τ ≤100ms -35 -40 V On/Off Threshold Voltage VO = 3V On 1.8 Off On/Off Threshold Current 2.5 VOFF = 2.4V 1.5 V 2.0 35 V 60 µA Note 1: Absolute Maximum Ratings are limits beyond which damage to the device may occur. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics tables. Note 2: To ensure constant junction temperature, low duty cycle pulse testing is used. Note 3: Limits appearing in boldface type apply over the entire junction temperature range for operation. Limits appearing in normal type apply for TA = TJ = 25°C. Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-to ambient thermal resistance θJ-A and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is calculated using: P(MAX) = TJ(MAX) - TA θJ - A Where the value of the junction-to-ambient thermal resistance are as follows: 195°C/W for the TO-92 (N) package, 110°C/W for SOT-89 (L), 220°C/W for 5 lead SOT-23 (M1) and 160°C/W for the molded plastic SO-8 (S). Note 5: Dropout Voltage is defined as the input to output differential at which the output voltage drops 100mV below its nominal value measured at 1V differential. www.advanced-monolithic.com updated April 24, 2009 AMS3102 PIN CONNECTIONS TO-92 Plastic Package (N) OUTPUT SOT-89 (L) SOT-89 (L) R = Reverse pin-out INPUT GND 1 INPUT 2 GND 3 1 OUTPUT 2 3 OUTPUT GND INPUT Bottom View Top View Top View 3 Lead SOT-23 (M) 5 Lead SOT-23 (M1) 8L SOIC SO-Package (S) GND INPUT 1 5 OUTPUT GROUND 2 ON/OFF 3 INPUT 4 ADJ / N/C OUTPUT Top View OUTPUT 1 8 INPUT GROUND 2 7 GROUND GROUND 3 ADJ 4 N/C 6 GROUND 5 ON/OFF N/C Top View Top View TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage IO = 200mA 0.4 0.3 IO = 150mA 0.2 IO = 100mA 0.1 0 0 80 120 40 JUNCTION TEMPERATURE (° C) www.advanced-monolithic.com Low Voltage Behavior 0.6 6.0 0.5 OUTPUT VOLTAGE (V) 0.5 INPUT OUTPUT DIFFERENTIAL (V) INPUT OUTPUT DIFFERENTIAL (V) Dropout Voltage 0.6 0.4 0.3 0.2 0.1 0 5.0 AMS3102-3.3 IO = 100mA 4.0 3.0 2.0 0 0 50 100 150 200 250 OUTPUT CURRENT (mA) 300 2.0 3.0 4.0 5.0 6.0 INPUT VOLTAGE (V) updated April 24, 2009 AMS3102 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Output at Voltage Extremes Ripple Rejection Peak Output Current 600 6 85 AMS3102-3.3 3 2 1 0 500 RIPPLE REJECTION (dB) 4 -1 -20 -10 T J= 25°C 400 300 200 100 0 0 10 20 30 40 50 60 INPUT VOLTAGE (V) 0 Quiescent Current 20 10 INPUT VOLTAGE (V) 60 55 IO= 10mA 50 1 10 100 1k 10k 100k 1M FREQUENCY (Hz) Quiescent Current 12.5 10 7.5 5.0 2.5 0 VIN = 6V 10 QUIESCENT CURRENT (mA) 3.3V OUTPUT IO= 100mA QUIESCENT CURRENT (mA) 8 6 4 2 0 0 1 2 3 4 5 6 7 8 INPUT VOLTAGE (V) 9 10 0 Output Impedance INPUT VOLTAGE (V) IO = 10mA OUTPUT VOLTAGE (V) 1 0.1 1 10 100 1k 10k 100k FREQUENCY (Hz) www.advanced-monolithic.com 1M 50 100 150 200 250 300 350 OUTPUT CURRENT (mA) Operation During Load Dump 70 60 50 40 30 τ =150 ms 20 10 0 ~ CO= 100µF 5~ RL= 500Ω 4 3 2 1 0 -100 0 100 200 300 400 TIME (ms) 20 15 IO = 200mA 10 3 ~ ~ ~ ~ IO = 100mA 2 IO = 50mA 1 IO = 0mA 0 -40 0 40 80 120 TEMPERATURE (° C) Reference Voltage 1.30 ~ ~ 500 REFERENCE VOLTAGE (V) QUIESCENT CURRENT (µA) 65 Quiescent Current 10 OUTPUT IMPEDANCE (Ω) C2 = 100µF ALUM 70 25 15 0.01 75 45 30 17.5 -2.5 C2 = 100µF TANTALUM 80 RL=500mΩ OUTPUT CURRENT (mA) OUTPUT VOLTAGE (V) 5 AMS3102C ADJUSTABLE 1.28 1.26 1.24 1.22 1.20 1.18 1.16 1.14 1.12 1.10 0 3 6 9 12 15 18 21 24 OUTPUT VOLTAGE (V) updated April 24, 2009 AMS3102 APPLICATION NOTES Definition of Terms Typical application circuit (adjustable output) Dropout Voltage: The input-output voltage differential at which the circuit stops to regulate against further reduction in input voltage. Measured when the output voltage has dropped 100mV from the nominal voltage obtained at 1V input, dropout voltage is dependent upon load current and junction temperature. Input Voltage: The DC voltage applied to the input terminal with respect to ground. Input-Output Differential: The voltage difference between the unregulated input voltage and the regulated output voltage for which the regulator will regulate. Line Regulation: The change in output voltage for a change in the input voltage. The line regulation is measured under conditions of low dissipation or by using low duty cycle pulse testing such that the average chip temperature is not significantly affected. Load Regulation: The change in output voltage for a change in load current at constant chip temperature. Long term stability: Output voltage stability under accelerated life-test conditions after 1000 hours with maximum rated voltage and junction temperature. Output Noise Voltage: The rms AC voltage at the output, with constant load and no input ripple, measured over a specified frequency range. Quiescent Current: That part of the positive input current that does not contribute to the positive load current. The regulator ground lead current. Ripple Rejection: The ratio of the peak-to –peak input ripple voltage to the peak-to-peak output ripple voltage at specified frequency. Temperature Stability of VO: The percentage change in output voltage for a thermal variation from room temperature to either temperature extreme. VIN 100k OUT VOUT OFF ON/OFF 10µF AMS3102 ADJUSTABLE R1 28k + ADJ ON GND C1 22µF R2 Minimum Load In circuits using the fixed output voltage versions, minimum load is not required. For circuits using the adjustable device, the value of R1 and R2 should be chosen such, that a current of approximately 40µA flows through the network. The reference voltage (1.235V) is measured between the adjust pin and VOUT. The output voltage can be set by the two resistors R1 and R2 using the following equation: R1 + R2 VO = VREF R1 The value of R1 is recommended to be between 25kΩ to 30 kΩ, and the value of R2 will set the output voltage. External capacitor The AMS3102 series require an output capacitor of 2.2µF or greater to ensure device stability. Without the capacitor the device may oscillate. Most type of tantalum or electrolytic capacitor can be used in the applications. A critical characteristic of the capacitors is an ESR value of 5Ω or less and a resonant frequency above 500kHz. The value of this capacitor can be increased without limits. For higher loads, the value of the capacitor should be increased, specially when the output voltage is set for 2.5V or less. The AMS3102 lowest fixed output voltage value is 2.0V. www.advanced-monolithic.com updated April 24, 2009 AMS3102 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3L TO-92 PLASTIC PACKAGE (N) 0.180±0.005 (4.572±0.127) 0.060±0.005 (1.524±0.127) DIA 0.060±0.010 (1.524±0.254) 0.90 (2.286) NOM 0.180±0.005 (4.572±0.127) 0.140±0.010 (3.556±0.127) 5° NOM 0.500 (12.70) MIN 0.050 (1.270) MAX UNCONTROLLED LEAD DIMENSIONS 0.015±0.002 (0.381±0.051) 0.016±0.003 (0.406±0.076) 0.050±0.005 (1.270±0.127) 10° NOM N (TO-92 ) AMS DRW# 042391 5 LEAD SOT-23 PLASTIC PACKAGE (M1) 0.110-0.120 (2.794-3.048) 0.102-0.118 (2.60-3.00) 0.059-0.070 (1.50-1.75) 0.014-0.020 (0.350-0.50) 0.037 (0.95) TYP 0.018-0.024 (0.457-0.610) 10° NOM 0.036-0.051 (0.090-1.30) 0.0035-0.0080 (0.090-0.20) 0.003 (0.150) MAX www.advanced-monolithic.com 0.075 (1.90) TYP 10° NOM 0.018-0.024 (0.457-0.610) (SOT-23-5 ) AMS DRW# 051001 updated April 24, 2009 AMS3102 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued). SOT-89 PLASTIC PACKAGE (L) 0.173-0.181 (4.40-4.60) 0.055-0.063 (1.40-1.60) 0.014-0.017 (0.35-0.44) 0.064-0.072 (1.62-1.83) 0.155-0.167 (3.94-4.25) 0.084-0.090 (2.13-2.29) 0.090-0.102 (2.29-2.60) 0.035-0.047 (0.89-1.20) 0.059 (1.50) BSC 0.014-0.019 (0.36-0.48) 0.017-0.022 (0.44-0.56) L (SOT-89 ) AMS DRW# 042392 0.118 (3.00) BSC 8 LEAD SOIC PLASTIC PACKAGE (S) 0.189-0.197* (4.801-5.004) 8 7 6 5 0.228-0.244 (5.791-6.197) 0.150-0.157** (3.810-3.988) 1 2 3 4 0.010-0.020 x 45° (0.254-0.508) 0.053-0.069 (1.346-1.752) 0.004-0.010 (0.101-0.254) 0.014-0.019 (0.355-0.483) 0.008-0.010 (0.203-0.254) 0.050 (1.270) TYP 0°-8° TYP 0.016-0.050 (0.406-1.270) S (SO-8 ) AMS DRW# 042293 *DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE **DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE www.advanced-monolithic.com updated April 24, 2009