Advanced Monolithic Systems AMS3101 150mA LOW DROPOUT VOLTAGE REGULATOR RoHS compliant FEATURES APPLICATIONS • 0.6V to 6V in 100mV increments Voltages Available • Active High On/Off Control • Output Current of 150mA • Quiescent Current of <1µA when in Shutdown • Low Dropout Voltage of 250mV at 150mA • Wide Supply Voltage Range 1.5V to 15V • Short Circuit and Thermal Protection • Power Good function option • Ceramic Output Capacitor OK • Reference bypass for lower noise • Battery Powered Systems • Cellular Phones • Cordless Telephones • Portable (Notebook) Computers • Portable Instrumentation • Portable Consumer Equipment • Personal Communication Equipment • Radio Control Systems • Low Voltage Systems • MP3 Player GENERAL DESCRIPTION The AMS3101 is a 150mA low dropout fixed voltage regulator, featuring an internal electronic switch controlled by TTL or CMOS logic levels. When the Enable pin is pulled to a logic high level, the device is in the ON state. Designed specifically for battery powered applications where low quiescent current, low dropout and low standby current are required, the AMS3101 is ideal to use in standby power systems. Like other regulators the AMS3101 series also includes internal current limiting and thermal shutdown. A high precision 0.6V voltage reference enables the device to provide very low output voltages. A key feature includes a reference bypass pin to improve its low-noise performance for fixed output versions. Ideal for space critical applications, the AMS3101 is available in the 5-pin SOT-23 surface mount package and requires only a 10µF capacitor on the output for a minimum amount of external components. The Power Good option is used when the Output Voltage drop must be detected. If the Output Voltage drops by approximately 15% of its nominal value, the open collector on PG pin will pull down to Low state. ORDERING INFORMATION PIN CONNECTIONS PACKAGE TYPE OPERATING TEMP. 5L SOT-23 AMS3101AM1-XXBP AMS3101M1-XXBP AMS3101AM1-XXPG AMS3101M1-XXPG AMS3101AM1-ADJ AMS3101M1-ADJ RANGE IND IND IND IND IND IND 5 Lead SOT-23 (M1) 5 Lead SOT-23 (M1) 5 Lead SOT-23 (M1) FIXED VOLTAGE FIXED VOLTAGE ADJ VOLTAGE Top View Top View Top View XX =specify the output voltage required PG=Power Good Open Collector pin BP=Reference bypass pin for lower noise Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS3101 ABSOLUTE MAXIMUM RATINGS (Note 1) Input Voltage Power Dissipation Thermal Resistance Operating Temperature Range 16V Internally limited 410°C/W -40°C to +125°C Maximum Junction Temperature Storage Temperature Lead Temperature (Soldering 25 sec) ESD Rating +150°C -65°C to +150°C 265°C 2kV ELECTRICAL CHARACTERISTICS Electrical Characteristics at VIN =VOUT +1V, IO=1mA, CIN =10µF, COUT = 22µF, VON/OFF = 2V unless otherwise specified. PARAMETER Reference Voltage AMS3101A-X CONDITIONS Adjustable device option Output Voltage AMS3101-X Typ. Max. Min. Typ. Max. 0.594 0.600 0.606 0.488 0.600 0.612 V -1 1 -2 2 % -2 2 -3.5 3.5 % 0.6 1 mV/V 0.1 0.4 (Fixed Output Version) 1mA ≤I ≤ 150 mA Line Regulation VOUT+1V ≤ V ≤ 15V 0.6 1 Load Regulation IL = 0.1mA to 150mA 0.1 0.4 O Units Min. IN 2 2 0.8 mV/mA 0.8 I = 0 mA 70 100 70 100 µA I = 150 mA 1.2 1.5 1.2 1.5 mA Dropout Voltage I = 150 mA 200 250 200 250 mV Quiescent Current VEN ≤ 0.9V (shutdown) 0.01 1 µA 5 µA Ground Pin Current O O O VEN ≤ 0.8V (shutdown) 5 Ripple Rejection f = 1kHz, COUT =10µF 75 75 dB Output Noise Voltage 300Hz< f <50kHz, CO=10µF, 60 60 µV Short Circuit Current RL =0Ω 140 140 mA Control Terminal Specifications (note 2) On/Off Input Current VON/OFF = 0V VON/OFF = 5V On/Off Input Voltage High = Output On Low = Output Off 1.3 0 -1 5 15 1.25 1.3 0.9 0 -1 µA 5 15 µA 1.25 V 0.9 V 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: The ON/OFF inputs must be properly driven to prevent possible misoperation. 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. TYPICAL APPLICATION CIRCUIT Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS3101 TYPICAL PERFORMANCE 25 Ω Load Start up from enable with VIN = 4.5V output C = 2.2u, Ref C=0pf. 500 Ω Load Start up from Enable with VIN= 4.5V, output C = 2.2u, Ref C=0pf. Stop with 25Ω load using enable Output C =2.2Uf 10mA/150mA load transient VIN = 4.5V, VOUT = 2.5V Soft Start with enable, 100nF on Ref pin, output C = 2.2uF, VIN = 4.5, Load = 1mA Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS3101 TYPICAL PERFORMANCE Ground Current 2.55 5.00E-03 2.54 4.50E-03 2.53 4.00E-03 2.52 3.50E-03 2.51 3.00E-03 Ignd Vout Load Regulation 2.5 2.50E-03 2.49 2.00E-03 2.48 1.50E-03 2.47 1.00E-03 2.46 5.00E-04 2.45 0 0.05 0.1 0.15 0.00E+00 0.2 0 0.05 0.1 Load Current 0.15 0.2 Load Load Regulation for 4.5v input 2.5v set point Ground current VS load for VIN = 4.5V and output = 2.5V Undervoltage Zone Drop out Voltage 2.55 0.3 2.5 0.25 0.2 2.4 Vout Drop voltage 2.45 0.15 2.35 2.3 0.1 2.25 0.05 2.2 0 2.15 0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 2.3 0.16 2.4 2.5 2.6 2.7 2.8 2.9 3 Vin Load Dropout Vs Load for VIN = 2.3V 2.5V regulator with 10mA load showing under-voltage dropout Line Regulation 2.503 Output Voltage 2.5025 2.502 2.5015 2.501 2.5005 2.5 2.4995 0 5 10 15 20 25 Vin Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS3101 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 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 Advanced Monolithic Systems, Inc. 0.075 (1.90) TYP www.advanced-monolithic.com 10° NOM 0.018-0.024 (0.457-0.610) (SOT-23-5 ) AMS DRW# 051001 Phone (925) 443-0722 Fax (925) 443-0723