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| Advanced Monolithic Systems FEATURES * 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 AMS3102 300mA LOW DROPOUT VOLTAGE REGULATOR APPLICATIONS * 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 TO-92 AMS3102AN-X AMS3102N-X SOT-89 AMS3102AL-X (R) AMS3102L-X (R) PACKAGE TYPE 3L SOT-23 AMS3102AM-X AMS3102M-X 5L SOT-23 AMS3102AM1-X AMS3102M1-X AMS3102CM1 SO-8 AMS3102AS-X AMS3102S-X AMS3102CS TEMP. RANGE IND IND IND ADJ. X = 2.0V, 2.5V, 3.0V, 3.3V, 3.5V, 4.0V, 5.0V. R = Reverse pin-out option Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3102 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage Operating Overvoltage Protection Internal Power Dissipation (Note 4) 21V 24V to 40V Internally Limited Maximum Junction Temperature +125C Storage Temperature -65C to +150C Lead Temperature (Soldering 10 sec) 230C ESD 2000V ELECTRICAL CHARACTERISTICS Electrical Characteristics at VIN =VO +1V, IO =10mA, TJ=25C, C2 = 22F unless otherwise specified. PARAMETER Fixed Output Voltage Versions Output Voltage Tolerance (VIN+1V) V 21V, IO=100 mA -40C T 125C J IN CONDITIONS Min. -1.0 - 3.0 AMS3102A-X Typ. Max. +1.0 + 3.0 5 8 30 50 0.25 0.5 0.3 3 9 500 200 10 30 50 70 0.3 0.6 0.5 4 12 Min. -3.0 AMS3102-X Typ. Max. +3.0 5.0 5 8 30 50 0.3 0.5 0.3 3 9 500 200 80 10 30 50 70 0.4 0.6 0.5 4 12 Units % % mV mV mV mV mV mV mA mA mA V rms m dB V V V V Line Regulation (VIN+1V) V 15V 9V V 21V IN O IN Load Regulation Dropout Voltage 5mA I 100 mA 5mA 10 200 mA I = 100 mA O I = 200 mA O Quiescent Current I 10 mA, O I = 100 mA I 200 mA (Note 5) O O Output Noise Voltage Output Impedance Ripple Rejection Maximum Operational Input Voltage Maximum Line Transient Reverse Polarity Input Voltage, D/C Reverse Polarity Input Voltage, Transient 10Hz-100kHz, COUT = 100F 100mADC and 10mArms,100Hz=10kHz fO =120Hz 55 21 RL = 500, VO 5.5V T = 1ms, 100ms -35 RL = 500, T = 1ms, 100ms -35 35 80 22 40 -40 -40 21 35 -35 -35 22 40 -40 -40 Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3102 ELECTRICAL CHARACTERISTICS Electrical Characteristics at VIN =6V, VOUT =3V IO =10mA, TJ=25C, R1 =27k, C2 = 2F unless otherwise specified. PARAMETER Adjustable Version Reference Voltage IO 100 mA, -40C T 125C, R1=27k, J CONDITIONS (Note 2) Min. 1.210 AMS3102C Typ. 1.235 1.235 Units Max. 1.26 1.270 20 V V V mV/V % % V V V mA mA mA Vrms/V 200 m %/1000hr dB V V V V Measured from VOUT to Adjust Pin Output Voltage Range Line Regulation Load Regulation VOUT + 1V V 21V IN 1.20 2 .02 0.3 1 0.05 0.3 0.5 0.3 3 0.3 100 40 0.4 0.02 21 22 40 -40 -40 1.5 1 2 0.2 0.4 0.6 0.5 4 0.5 5mA I 100 mA 5mA I 200 mA O O Dropout Voltage I 10 mA O I = 100 mA O I = 200 mA (Note 5) O Quiescent Current I = 10 mA O I = 100 mA O During Shutdown RL = 500 Output Noise Voltage Output Impedance Long Term Stability Ripple Rejection Maximum Operational Input Voltage Maximum Line Transient Reverse Polarity Input Voltage, D/C Reverse Polarity Input Voltage, Transient On/Off Threshold Voltage On Off On/Off Threshold Current VOFF = 2.4V 2.5 IO = 10mA, Reference Voltage 1.5V T = 1ms, 100ms RL = 500, VO -0.3V RL = 500, T = 1ms, 100ms VO = 3V -35 -35 10Hz-100kHz 100mADC and 10mArms,100Hz=10kHz T =1000hr fO = 120Hz 35 1.8 2.0 35 1.5 60 V V A 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 = 25C. Note 4: The maximum allowable power dissipation is a function of the maximum junction temperature TJ(MAX), the junction-to ambient thermal resistance J-A and the ambient temperature TA. The maximum allowable power dissipation at any ambient temperature is calculated using: P(MAX) = TJ(MAX) - TA J - A Where the value of the junction-to-ambient thermal resistance are as follows: 195C/W for the TO-92 (N) package, 110C/W for SOT-89 (L), 220C/W for 5 lead SOT-23 (M1) and 160C/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. Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3102 PIN CONNECTIONS TO-92 Plastic Package (N) OUTPUT INPUT SOT-89 (L) SOT-89 (L) R = Reverse pin-out GND 1 INPUT 2 GND 3 OUTPUT 1 2 3 INPUT OUTPUT GND Bottom View Top View Top View 3 Lead SOT-23 (M) GND 5 Lead SOT-23 (M1) 8L SOIC SO-Package (S) INPUT 1 GROUND 2 ON/OFF 3 5 OUTPUT OUTPUT 1 8 INPUT 7 GROUND 6 GROUND 5 ON/OFF N/C GROUND 2 4 ADJ / N/C INPUT OUTPUT GROUND 3 ADJ 4 N/C Top View Top View Top View TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage INPUT OUTPUT DIFFERENTIAL (V) INPUT OUTPUT DIFFERENTIAL (V) 0.6 0.5 0.4 0.3 0.2 0.1 0 0 80 120 40 JUNCTION TEMPERATURE ( C) IO = 150mA IO = 100mA IO = 200mA Dropout Voltage 0.6 OUTPUT VOLTAGE (V) 0.5 0.4 0.3 0.2 0.1 0 0 50 100 150 200 250 OUTPUT CURRENT (mA) 300 6.0 5.0 4.0 3.0 2.0 0 Low Voltage Behavior AMS3102-3.3 IO = 100mA 2.0 3.0 4.0 5.0 6.0 INPUT VOLTAGE (V) Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3102 TYPICAL PERFORMANCE CHARACTERISTICS (Continued) Output at Voltage Extremes 6 AMS3102-3.3 Peak Output Current 600 OUTPUT CURRENT (mA) RIPPLE REJECTION (dB) 85 80 500 TJ= 25C Ripple Rejection C2 = 100 F TANTALUM 5 OUTPUT VOLTAGE (V) 4 3 2 1 0 RL=500m 75 70 65 60 55 50 45 1 IO= 10mA C2 = 100 F ALUM 400 300 200 100 0 -1 -20 -10 0 10 20 30 40 50 60 INPUT VOLTAGE (V) 0 20 10 INPUT VOLTAGE (V) 30 10 100 1k 10k 100k 1M FREQUENCY (Hz) Quiescent Current 17.5 QUIESCENT CURRENT (mA) QUIESCENT CURRENT (A) 15 12.5 10 7.5 5.0 2.5 0 -2.5 0 1 2345678 INPUT VOLTAGE (V) 9 10 3.3V OUTPUT IO= 100 mA Quiescent Current 25 QUIESCENT CURRENT (mA) 10 8 6 4 2 0 0 50 100 150 200 250 300 350 OUTPUT CURRENT (mA) VIN = 6V Quiescent Current 20 15 IO = 200mA 10 3 2 1 ~ ~ IO = 100mA IO = 50mA IO = 0mA ~ ~ 0 -40 0 40 80 120 TEMPERATURE ( C) Output Impedance 10 INPUT VOLTAGE (V) OUTPUT IMPEDANCE () IO = 10mA 1 0.1 0.01 1 10 100 1k 10k 100k FREQUENCY (Hz) 1M Operation During Load Dump 70 60 50 40 30 =150 ms 20 10 0 ~ CO= 100F 5~ RL= 500 4 3 2 1 0 -100 0 100 200 300 400 TIME (ms) Reference Voltage 1.30 REFERENCE VOLTAGE (V) 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) AMS3102C ADJUSTABLE OUTPUT VOLTAGE (V) ~ ~ 500 Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3102 APPLICATION NOTES Definition of Terms Typical application circuit (adjustable output) V IN 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. External capacitor The AMS3102 series require an output capacitor of 2.2F 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 5 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. 100k OUT OFF ON/OFF 10F ON GND AMS3102 ADJUSTABLE ADJ R2 R1 28k + C1 22F VOUT 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 40A 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 25k to 30 k, and the value of R2 will set the output voltage. Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3102 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 3L TO-92 PLASTIC PACKAGE (N) 0.0600.005 (1.5240.127) DIA 0.1800.005 (4.5720.127) 0.0600.010 (1.5240.254) 0.1400.010 (3.5560.127) 0.1800.005 (4.5720.127) 0.90 (2.286) NOM 5 NOM 0.500 (12.70) MIN 10 NOM 0.050 (1.270) MAX UNCONTROLLED LEAD DIMENSIONS 0.0500.005 (1.2700.127) 0.0160.003 (0.4060.076) 0.0150.002 (0.3810.051) 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) 0.037 (0.95) TYP 0.018-0.024 (0.457-0.610) 0.014-0.020 (0.350-0.50) 10 NOM 0.036-0.051 (0.090-1.30) 0.0035-0.0080 (0.090-0.20) 0.003 (0.150) MAX 0.075 (1.90) TYP 10 NOM 0.018-0.024 (0.457-0.610) (SOT-23-5 ) AMS DRW# 051001 Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 AMS3102 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted (Continued). SOT-89 PLASTIC PACKAGE (L) 0.173-0.181 (4.40-4.60) 0.064-0.072 (1.62-1.83) 0.055-0.063 (1.40-1.60) 0.014-0.017 (0.35-0.44) 0.155-0.167 (3.94-4.25) 0.090-0.102 (2.29-2.60) 0.084-0.090 (2.13-2.29) 0.035-0.047 (0.89-1.20) 0.059 (1.50) BSC 0.118 (3.00) BSC 0.014-0.019 (0.36-0.48) 0.017-0.022 (0.44-0.56) L (SOT-89 ) AMS DRW# 042392 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 0.053-0.069 (1.346-1.752) 0.004-0.010 (0.101-0.254) 0.008-0.010 (0.203-0.254) 0.010-0.020 x 45 (0.254-0.508) 0-8 TYP 0.014-0.019 (0.355-0.483) 0.050 (1.270) 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 Advanced Monolithic Systems, Inc. 6680B Sierra Lane, Dublin, CA 94568 Phone (925) 556-9090 Fax (925) 556-9140 |
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