GM1117

www.DataSheet4U.com MICROELECTRONICS A A Power Management GM1117 1.0A LOW DROPOUT PRECISION LINEAR REGULATORS Description GM1117 of positive adjustable and fixed regulators is designed to provide 1.0A output with low dropout voltage performance. On-chip trimming adjusts the reference voltage to 1%. For usage on working in post regulators or microprocessor power supplies, low voltage operation and fast transient response are required. Pin-to-pin compatible with the LT1086 family of regulators, GM1117 is available in surface-mount SOT-223 and TO252 packages. Features Adjustable or Fixed Output Output Current of 1.0A Dropout Voltage (Typical) 1.15V @ 1.0A Line Regulation 0.2% max. Load Regulation 0.4% max. Fast Transient Response Current Limit Protection Thermal Shutdown Protection Application High Efficiency Linear Regulators Post Regulators for Switching Supplies Microprocessor Supply Hard Drive Controllers Battery Chargers Adjustable Power Supply TYPICAL APPLICATION CIRCUITS (Adjustable Version) (Fixed Version) VIN> 4.75V GM1117-Adj 3 VIN ADJ VOUT 2 R1 133W 1.0% R2 232W 1.0% VOUT= 3.45V VIN> 4.75V 3 VIN GM1117-3.3 VOUT 2 GND VOUT= 3.3V + 1 C1 10µF Tant + C2 10µF Tant. Min + 1 C1 10µF Tant + C2 10µF Tant. Min VOUT= VREF X (1 + R2 ) + IADJ X R2 R1 Notes: 1. C1 needed if device is far from filter capacitors 2. C2 minimum value required for stability www.gammamicro.com GM1117 V0.1 1 MICROELECTRONICS A A Power Management GM1117 1.0A LOW DROPOUT P...