G9185 Global Mixed-mode Technology Inc. 2A Low Input /Low Dropout Linear Regulator Features General Description The G9185 is a high performance positive voltage regulator designed for use in applications requiring very low Input voltage and low dropout voltage at up to 2Amperes. It operates with a VIN as low as 1.4V with output voltage programmable as low as 0.5V. The supply current is 350µA while VIN is 3.3V. The G9185 features low dropout, ideal for applications where VOUT is very close to VIN. The over-current protection limit is set at 3A typical. An over temperature protection circuit is built-in in the G9185 to prevent thermal overload. Additionally, the G9185 has an enable pin to further reduce power dissipation while shutdown. In the shutdown mode, the maximum supply current is less than 1µA. The G9185 provides excellent regulation over variations in line, load and temperature. Input Voltage as Low as 1. 4V 400mV Dropout @ 2A, as VO is 1.2V ±2% Output Voltage Output Range from 0.5V to 3.8V Over Current and Over Temperature Protection Max. Supply Current is Shutdown Mode <1µA Small Ceramic Output Capacitors Enable Pin SOP-8 (FD) Packages Applications Telecom/Networking Cards Motherboards/Peripheral Cards Industrial Applications Wireless Infrastructure Set top Boxes Notebook Computers Medical Equipment Battery Powered Systems The G9185 is available in the SOP-8 (FD) package. The output voltage can be set via an external divider or to fixed settings of 0.5V and 1.2V depending on how FB pin is configured. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G9185F11U G9185 -40°C ~ +85°C SOP-8 (FD) Note: F1: SOP-8 (FD) 1: Bonding Code U : Tape & Reel Pin Configuration Typical Application Circuit 1 3 VIN 2 ENABLE 4 C1 NC NC VIN VO EN G9185 FB GND NC 5 6 VO 7 8 VO= R1 0.5(R1+R2) R2 C2 R2 G9185 NC 8 1 1 GND 3 VIN EN VIN 2 3 Thermal Pad 7 FB 6 VO 2 ENABLE 4 C1 NC 4 5 NC NC VIN EN VO G9185 FB GND NC 5 6 VO 7 VO=0.5V 8 C2 NC SOP-8 (FD) Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. 1 3 VIN 2 ENABLE 4 C1 NC NC VIN VO EN NC G9185 FB GND 5 6 VO 7 VO=1.2V 8 C2 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Oct 20, 2010 1 (V)