G5001 Global Mixed-mode Technology Inc. 300kHz DC-DC Step-Down PWM Controller Features General Description The G5001 series are pure voltage-mode PWM step-down DC/DC converter controllers with built-in high speed low ON resistance drivers. 3.3V, 2.5V, 1.8V Fixed Output or Adjustable Version External PMOS Switch Available in SOT-23-5 Package Input Range 2.5V~5.5V Output Tolerance ±2.5% Oscillator Frequency 300KHz, ±15% Internal Soft-Start Standby Current 0.5µA (Max) 1V Reference Voltage for Adjustable Version Large output currents are possible by using an externally connected transistor, coil, diode. Output voltage is selectable for 1.8, 2.5V, 3.3V (±2.5%). For other output voltages the FB version, which has a 1V internal reference voltage, is available. With built-in UVLO function, the external switch will be forcibly switched off when used below the stipulated voltage. An internal soft start is available and the soft start time is set up internally. Applications Electronics Information Organizers Palmtops Cellular and portable phones Portable Audio Systems Various Multi-function Power Supplies Pin Configuration Typical Application Circuit VDD CIN 47µF EXT 1 5 VOUT (FB) RFB1 CFB VDD EXT FB G5001 CE GND G5001 VDD GND 2 T11 RFB2 4 3 M L D VOUT 22µH COUT 47µF CE SOT-23-5 Output External Set-up Version VOUT = 1 • (1+ RFB1 RFB2 ) VDD CIN 47µF CE 1 5 VDD VDD EXT VOUT G5001 CE GND G5001 GND VOUT (FB) 2 T12 4 3 M L D VOUT 22µH COUT 47µF EXT SOT-23-5 Output Internal Set-up Version TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.7 Dec 06, 2006 1 G5001 Global Mixed-mode Technology Inc. Ordering Information ORDER NUMBER MARKING G5001-ADJT11U EEADx G5001-18T11U G5001-25T11U G5001-33T11U EE18x EE25x EE33x G5001-ADJT12U G5001-18T12U 5EADx 5E18x G5001-25T12U G5001-33T12U 5E25x 5E33x TEMP. RANGE PACKAGE (Pb free) Adj -40°C~85°C SOT-23-5 1.8V 2.5V 3.3V -40°C~85°C -40°C~85°C -40°C~85°C SOT-23-5 SOT-23-5 SOT-23-5 Adj 1.8V -40°C~85°C -40°C~85°C SOT-23-5 SOT-23-5 2.5V 3.3V -40°C~85°C -40°C~85°C SOT-23-5 SOT-23-5 VOLTAGE Note: T1: SOT-23-5 1 or 2 : Bonding Code U: Tape & Reel TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.7 Dec 06, 2006 2