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Technical content

Features

„ 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

Applications

„ Electronics Information Organizers „ Palmtops „ Cellular and portable phones „ Portable Audio Systems „ Various Multi-function Power Supplies 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. Large output currents are possible by using an exter- nally 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. Pin Configuration Typical Application Circuit VOUT (FB) CE SOT-23-5 1EXT VDD GND VOUT COUT 47µF 22µH CIN 47µF VDD VDD EXT GNDCE FB Output External Set-up Version G5001 VOUT COUT 47µF 22µH CIN 47µF VDD VDD EXT GNDCE VOUT Output Internal Set-up Version G5001 VOUT (FB) CE SOT-23-5 EXT GND G5001 T11 T12 VDD L M D CFB RFB1 RFB2 D M LG5001 VOUT = 1 • ( 1 + RFB1 RFB2 VOUT (FB) CE SOT-23-5 1EXT VDD GND VOUT COUT 47µF 22µH CIN 47µF VDD VDD EXT GNDCE FB Output External Set-up Version G5001 VOUT COUT 47µF 22µH CIN 47µF VDD VDD EXT GNDCE VOUT Output Internal Set-up Version G5001 VOUT (FB) CE SOT-23-5 EXT GND G5001 T11 T12 VDD L M D CFB RFB1 RFB2 D M LG5001 VOUT = 1 • ( 1 + RFB1 RFB2

Ver: 0.7 Dec 06, 2006 TEL: 886-3-5788833 http://www.gmt.com.tw G5001Global Mixed-mode Technology Inc.

Ordering Information

ORDER NUMBER MARKING VOLTAGE TEMP. RANGE PACKAGE (Pb free) G5001-ADJT11U EEADx Adj -40 °C~85°C SOT-23-5 G5001-18T11U EE18x 1.8V -40 °C~85°C SOT-23-5 G5001-25T11U EE25x 2.5V -40 °C~85°C SOT-23-5 G5001-33T11U EE33x 3.3V -40 °C~85°C SOT-23-5 G5001-ADJT12U 5EADx Adj -40 °C~85°C SOT-23-5 G5001-18T12U 5E18x 1.8V -40 °C~85°C SOT-23-5 G5001-25T12U 5E25x 2.5V -40 °C~85°C SOT-23-5 G5001-33T12U 5E33x 3.3V -40 °C~85°C SOT-23-5 Note: T1: SOT-23-5 1 or 2 : Bonding Code U: Tape & Reel