G5321 Global Mixed-mode Technology Current Mode Boost Controller Features General Description Input Voltage: 4.5V to 27V Adjustable Oscillator Frequency Fixed Frequency Current Mode Control Integrated Low-Side Driver Programmable Soft Start Over Current Protection Reference 700mV Low Power Shutdown Function The G5321 is a wide input voltage (4.5V to 27V), non-synchronous boost controller. It is suitable for topologies including boost, flyback, SEPIC and various LED Driver applications which require a grounded source N-channel FET. The device features include programmable soft start, over current protection with automatic retry, programmable oscillator frequency and integrated Low-side driver. Current mode control provides improved transient response and simplified loop compensation. Applications LED Lighting Industrial Control Systems Battery Powered Systems Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5321P71U G5321 -40°C to +125°C MSOP-10 Note:P7: MSOP-10 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application Circuit VIN RVDD 10Ω G5321 RC 1 10 1 VDD SS 2 9 BP SHDN 3 8 GDRV COMP 4 7 ISNS FB 5 6 GND 2 3 4 MSOP-10 5 VDD RC SS BP G5321 SHDN GDRV COMP ISNS FB GND CVDD 1µF 10 VOUT 9 8 7 6 RSENSE TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.1 Aug 21, 2012 1