G5752/G5752A Global Mixed-mode Technology 2A Step-down DC/DC Features General Description The G5752/G5752A is a monolithic step-down switch mode regulator with a built in internal power MOSFET. It achieves 2A continuous output current over a wide input supply range with excellent load and line regulation. 2A Output Current 0.18Ω Internal Power MOSFET Switch Stable with Low ESR Output Ceramic Capacitors Up to 95% Efficiency 30µA Shutdown Mode Fixed 380kHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Wide 4.5V to 24V Operating Input Range Output Adjustable from 1.22V to 21.6V(G5752) Output Adjustable from 0.92V to 21.6V(G5752A) Available in SOP-8 & MSOP-10 (FD) Package Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting, output short circuit protection and thermal shutdown. In shutdown mode the regulator draws 30µA of supply current. Programmable soft-start overwrites the internal soft-start for various requirement of output power up ramp and minimizes the inrush supply current at initial startup. Applications PC Monitors DSL Modems Distributed Power Systems Pre-Regulator for Linear Regulators The G5752/G5752A requires a minimum number of readily available standard external components. It is available in a SOP-8 & MSOP-10 (FD) package. Ordering Information ORDER NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5752P11U G5752 -40°C to +85°C SOP-8 G5752AP11U G5752A -40°C to +85°C SOP-8 G5752F61U G5752 -40°C to +85°C MSOP-10 (FD) G5752AF61U G5752A -40°C to +85°C MSOP-10 (FD) Note: P1: SOP-8 F6: MSOP-10 (FD) 1: Bonding Code U : Tape & Reel Pin Configuration Typical Application Circuit SOP-8 / MSOP-10 (FD) Pin No. INPUT 4.5V to 24V G5752/G5752A OFF BS 1 8 SS IN 2 7 EN LX 3 6 COMP GND 4 5 FB C1 10µF 35V ON C5 10nF 2/4 7/9 8/10 1/2 BS IN EN LX D1 G5752 SS FB 5/7 6/8 4/6 OUTPUT 2.5V/2A C2 22µF/35V CERAMIC R2 10kΩ 1% C3 3.9nF R3 10kΩ C6 OPEN R1 10.5kΩ 1% COMP GND C4 10nF L1 15µH 3/5 SOP-8 INPUT 4.5V to 24V G5752/G5752A NC 1 10 SS BS 2 9 EN NC 3 8 COMP IN 4 7 FB LX Thermal Pad 6 5 OFF C5 10nF C1 10µF 35V ON 2/4 7/9 8/10 C4 10nF 1/2 BS IN EN LX FB 4/6 C6 OPEN MSOP-10 (FD) 5/7 COMP GND GND Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. D1 G5752A SS L1 15µH 3/5 6/8 C3 3.9nF R3 10kΩ R1 26.1kΩ OUTPUT 3.3V/2A 1% R2 10kΩ 1% C2 22µF/35V CERAMIC Note: Recommend choosing the small Vf of Diode to avoid LX to GND smaller then -0.7V. TEL: 886-3-5788833 http://www.gmt.com.tw Ver: 0.91 Jan 09, 2012 1