G5302 Global Mixed-mode Technology Inc. 650mA Miniature, Adjustable, Step-Down DC-DC Converter for RF Power Amplifiers General Description Features z z z z z z z z z z The G5302 is a Synchronous Buck Converter, steps down an input voltage in the range from 2.7V to 5.5V to an adjustable output voltage of 0.8V to 3.6V. Output voltage is set by using VCON analog input to control power levels and efficiency of the RF PA. 2 MHz PWM Switching Frequency. 2.7V ~ 5.5V Input Voltage Operation. 0.8V ~ 3.6V Adjustable Output Voltage. 25µs Output Voltage Transient from 0.8V to 3.4V. 650mA Maximum load capability. 95% Efficiency DC/DC Converter. Cycle-by-Cycle current limit for DC/DC Converter Built-In Thermal Shutdown Function. Built-In Input Voltage UVP Function. 9-pin micro SMD Package. 2MHz Fixed-frequency PWM operation minimized RF interference. A shutdown function turns the device off and reduces battery consumption to 0.01µA(typ.). G5302 is abailabe in a 9-pin WLCSP Package. Applications z z z z Cellular Phones Hand-Held Radios RF PC Cards Battery Powered RF Devices Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5302B91U 5302 -30°C to +85°C WLCSP3X3-9 Note : B9: WLCSP3X3-9 1: Bonding Code U: Tape & Reel Pin Configuration Typical Application VIN 2.7V~5.5V PGND A3 A2 A1 PVIN SW AGND B3 B2 B1 VCC C1 EN PVIN C1 VCC EN 3.3µH SW VOUT 0.8V~3.6V L1 NC FB C3 C2 VCON PGND VCON FB AGND 4.7µF C2 Bottom View WLCSP3X3-9 TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.2 Dec 30, 2010 1