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Technical content
Features
3A Output Current 0.15Ω Internal Power MOSFET Switch Stable with Low ESR Output Ceramic Capaci- tors Up to 95% Efficiency 25µA Shutdown Mode Fixed 380kHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Wide 4.75V to 20V Operating Input Range Output Adjustable from 1.22V to 12V Available in SOP-8 (FD) Package
Applications
PC Monitors DSL Modems Distributed Power Systems Pre-Regulator for Linear Regulators General Description The G5656 is a monolithic step-down switch mode regulator with a built in internal power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent load and line regula- tion. Current mode operation provides fast transient re- sponse and eases loop stabilization. Fault condition protection includes cycle-by-cycle cur- rent limiting, output short circuit protection and thermal shutdown. In shutdown mode the regulator draws 25µA of supply current. Programmable soft-start over- writes the internal soft-start for various requirement of output power up ramp and minimizes the inrush supply current at initial startup. The G5656 requires a minimum number of readily available standard external components. It is available in a SOP-8 (FD) package.
Ordering Information
NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5656F11U G5656 -40 °C to +85°C SOP-8 (FD) G5656F12U G5656A -40 °C to +85°C SOP-8 (FD) Note: F1: SOP-8 (FD) 1 & 2: Bonding Code U : Tape & Reel Pin Configuration Typical Application Circuit EN COMP FB LX GND VIN 4.75V~20V D1 SS34 10µH R1/28kΩ R2/16kΩCC2 optional IN CC 22µF MLCC VOUT 3.3V/3A 10µF RC G5656 ONOFF VOUT = 1.22V x ( 1 + )R1 EN COMP FB LX GND SS34 10µH R1/28kΩ R2/16kΩ IN 0.1µF VOUT 3.3V/3A G5656 100µF/220µF Electrolytic VIN 4.75V~20V CC2 CC 10µF RC ONOFF SS 0.1µF SS 0.1µF SOP-8 (FD) G5656F11U LX NC IN GND SS EN COMP FB Thermal Pad Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. SOP-8 (FD) G5656F12U IN SS NC LX EN COMP FB GND Thermal Pad EN COMP FB LX GND VIN 4.75V~20V D1 SS34 10µH R1/28kΩ R2/16kΩCC2 optional IN CC 22µF MLCC VOUT 3.3V/3A 10µF RC G5656 ONOFF ONOFF VOUT = 1.22V x ( 1 + )R1 EN COMP FB LX GND SS34 10µH R1/28kΩ R2/16kΩ IN 0.1µF VOUT 3.3V/3A G5656 100µF/220µF Electrolytic VIN 4.75V~20V CC2 CC 10µF RC ONOFF ONOFF SS 0.1µF SS 0.1µF SS 0.1µF SS 0.1µF SOP-8 (FD) G5656F11U LX NC IN GND SS EN COMP FB Thermal PadLX NC IN GND SS EN COMP FB Thermal Pad Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. SOP-8 (FD) G5656F12U IN SS NC LX EN COMP FB GND Thermal PadIN SS NC LX EN COMP FB GND Thermal Pad
Ver: 0.4 Aug 03, 2009 TEL: 886-3-5788833 http://www.gmt.com.tw G5657Global Mixed-mode Technology Inc. 3A Step-down DC/DC 3A Output Current 0.15Ω Internal Power MOSFET Switch Stable with Low ESR Output Ceramic Capaci- tors Up to 95% Efficiency 25µA Shutdown Mode Fixed 380kHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Wide 4.75V to 20V Operating Input Range Output Adjustable from 0.92V to 12V Available in SOP-8(FD) Package PC Monitors DSL Modems Distributed Power Systems Pre-Regulator for Linear Regulators General Description The G5657 is a monolithic step-down switch mode regulator with a built in internal power MOSFET. It achieves 3A continuous output current over a wide in- put supply range with excellent load and line regulation. Current mode operation provides fast transient re- sponse ans eases loop stabilization. Fault condition protection includes cycle-by-cycle cur- rent limiting, output short circuit protection and thermal shutdown. In shutdown mode the regulator draws 25 µA 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. The G5657 requires a minimum number of readily available standard external components. It is available in a SOP-8 (FD) package. NUMBER MARKING TEMP. RANGE PACKAGE (Green) G5657F11U G5657 -40 °C to +85°C SOP-8 (FD) G5657F12U G5657A -40 °C to +85°C SOP-8 (FD) Note: F1: SOP-8 (FD) 1 & 2: Bonding Code U : Tape & Reel Pin Configuration Typical Application Circuit 3.3V/3A 3.3V/3A EN COMP FB LX GND VIN 4.75V~20V D1 SS34 10µH R1/62kΩ R2/24kΩCC2 optional IN CC 22µF MLCC VOUT 10µF RC G5657 ONOFF VOUT = 0.92V x (1+ )R1 EN COMP FB LX GND SS34 10µH R1/62kΩ R2/24kΩ IN 0.1µF VOUT G5657 100µF/220µF Electrolytic VIN 4.75V~20V CC2 CC 10µF RC ONOFF SS 0.1µF SS 0.1µF Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. NC G5657F11U IN SS LX EN COMP FB GND SOP-8 (FD) 7 EN G5657F12U LX NC IN GND SS COMP FB 7Thermal Pad Thermal Pad SOP-8 (FD) 3.3V/3A 3.3V/3A EN COMP FB LX GND VIN 4.75V~20V D1 SS34 10µH R1/62kΩ R2/24kΩCC2 optional IN CC 22µF MLCC VOUT 10µF RC G5657 ONOFF ONOFF VOUT = 0.92V x (1+ )R1 EN COMP FB LX GND SS34 10µH R1/62kΩ R2/24kΩ IN 0.1µF VOUT G5657 100µF/220µF Electrolytic VIN 4.75V~20V CC2 CC 10µF RC ONOFF ONOFF SS 0.1µF SS 0.1µF SS 0.1µF SS 0.1µF Note: Recommend connecting the Thermal Pad to the Ground for excellent power dissipation. NC G5657F11U IN SS LX EN COMP FB GND SOP-8 (FD) 7 EN G5657F12U LX NC IN GND SS COMP FB 7Thermal Pad Thermal Pad Thermal Pad Thermal Pad SOP-8 (FD)