G5320 Global Mixed-mode Technology Asynchronous Voltage Mode Controller Features General Description The G5320 is a flexible asynchronous buck controller with a built in 200mA driver for P-channel FETs. The input voltage is up to 27V. The G5320 operates with voltage-mode feedback and has feed-forward input-voltage compensation that responds instantly to input voltage change. The internal 700mV reference is trimmed to 1%, giving accurate output voltages. Clock frequency, soft-start, and overcurrent limit are each easily programmed by a single, external component. Over voltage protection (OVP) can be adjusted by setting the external resistors. Input under-voltage lockout is implemented. The G5320 is available in 10-pin MSOP exposed pad package. Input Voltage: 4.5V to 27V Output Voltage (700mV to 90% VIN) 200mA Internal P-Channel FET Driver Voltage Feed-Forward Compensation Undervoltage Lockout Hiccup Overcurrent Fault Recovery Programmable Fixed Frequency (35~500KHz) Operation Programmable Short Circuit Protection 700 mV 1% Reference Voltage Programmable Closed Loop Soft Start Disable Function Available Programmable Over-Voltage Protection MSOP-10 with Exposed Pad Package Available Applications Telecom DSL/Cable Modems Scanners Power Applications Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5320F61U G5320 -40°C to +125°C MSOP-10 (FD) Note: F6: MSOP-10 (FD) 1: Bonding Code U: Tape & Reel Pin Configuration G5320 RC 1 10 VDD 2 11 GND 9 BP DIS/EN 3 Thermal Pad 8 ISNS COMP 4 7 GDRV FB 5 6 OVP SS MSOP-10 (FD) Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.3 May 04, 2012 1