3A输出电流模式Buck-PWM转换器4.75V至20V电源电压CXSD62378固定500kHz开关频率热关机和内部软启动

The CXSD62378 is a high efficiency, 3A buck converter with a high-side low RDS(ON) switch. It operates from 4.75V to 20V input voltage range, and provides up to 3A continuous output current with the output voltage adjustable down to 1.2V. Whenever the load is light, the CXSD62378 automatically change the PWM operation mode to PFM operation to minimize the power consumption. Hence it is suitable for battery-powered devices. It uses a fixed switching frequency up to 500kHz. When a short circuit is detected on the output, the device change switching frequency to 50kHz to protect IC from damage. The G CXSD62378is available in a SOP-8 (FD) package.

产品特点 返回TOPl8y嘉泰姆

„ 4.75V to 20V Supply Voltage Operating Range l8y嘉泰姆

„ Fixed 500kHz Switching Frequency l8y嘉泰姆

„ Current-Mode Buck PWM Converter l8y嘉泰姆

„ Built-in P-Channel Power MOSFET l8y嘉泰姆

„ 3A Output Current l8y嘉泰姆

„ 1.2V Internal Reference l8y嘉泰姆

„ Shutdown Control l8y嘉泰姆

„ Thermal-Shutdown and Internal Soft Start l8y嘉泰姆

„ Cycle-by-Cycle Current-Limit l8y嘉泰姆

„ Short Circuit Protection l8y嘉泰姆

„ Under-Voltage Lockout Protectionl8y嘉泰姆

„ RoHs Compliant l8y嘉泰姆

„ SOP-8 (FD) Packagel8y嘉泰姆

应用范围 返回TOPl8y嘉泰姆

„ Distributed Power Systems l8y嘉泰姆

„ Battery Charger l8y嘉泰姆

„ Palmtop Computers, PDAs l8y嘉泰姆

„ DSL Modemsl8y嘉泰姆

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Asynchronous Step Down Converterl8y嘉泰姆
Part NO.l8y嘉泰姆	Vin(V)l8y嘉泰姆 min.l8y嘉泰姆	Vin(V)l8y嘉泰姆 max.l8y嘉泰姆	IOUTl8y嘉泰姆 (A)l8y嘉泰姆	FSWl8y嘉泰姆 (kHz)l8y嘉泰姆	FB(V)l8y嘉泰姆	Dutyl8y嘉泰姆 max(%)l8y嘉泰姆	IQl8y嘉泰姆 (μA)l8y嘉泰姆	Notel8y嘉泰姆	Packagel8y嘉泰姆
CXSD62374l8y嘉泰姆	4.5l8y嘉泰姆	24l8y嘉泰姆	1.5l8y嘉泰姆	1400l8y嘉泰姆	0.92l8y嘉泰姆	65l8y嘉泰姆	1300l8y嘉泰姆	BS, IN, LX,GND, FB, COMP, EN, SSl8y嘉泰姆	SOP-8(FD)l8y嘉泰姆
CXSD62375l8y嘉泰姆	5.5l8y嘉泰姆	20l8y嘉泰姆	3l8y嘉泰姆	300l8y嘉泰姆	0.8l8y嘉泰姆	100l8y嘉泰姆	1000l8y嘉泰姆	FB, EN, NC, IN, NC, LX, GND, NCl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62376l8y嘉泰姆	5l8y嘉泰姆	14l8y嘉泰姆	2l8y嘉泰姆	500l8y嘉泰姆	0.8l8y嘉泰姆	100l8y嘉泰姆	300l8y嘉泰姆	GND, IN, GND, FB, COMP, EN, LX, LXl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62377l8y嘉泰姆	4.75l8y嘉泰姆	20l8y嘉泰姆	2l8y嘉泰姆	500l8y嘉泰姆	1.2l8y嘉泰姆	100l8y嘉泰姆	1000l8y嘉泰姆	IN, EN, COMP, FB, NC, GND, LX, NCl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62378l8y嘉泰姆	4.75l8y嘉泰姆	20l8y嘉泰姆	3l8y嘉泰姆	500l8y嘉泰姆	1.2l8y嘉泰姆	100l8y嘉泰姆	1000l8y嘉泰姆	IN, EN, COMP, FB, NC, GND, LX, NCl8y嘉泰姆	SOP-8(FD)l8y嘉泰姆
CXSD62379l8y嘉泰姆	4.75l8y嘉泰姆	20l8y嘉泰姆	2.5l8y嘉泰姆	500l8y嘉泰姆	0.8l8y嘉泰姆	100l8y嘉泰姆	1000l8y嘉泰姆	IN, EN, COMP, FB, NC, GND, LX, NCl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62380l8y嘉泰姆	4.75l8y嘉泰姆	20l8y嘉泰姆	2l8y嘉泰姆	380l8y嘉泰姆	1.22l8y嘉泰姆	100l8y嘉泰姆	1000l8y嘉泰姆	NC, IN, LX, GND, FB, EN, SSl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62381l8y嘉泰姆	4.75l8y嘉泰姆	20l8y嘉泰姆	2l8y嘉泰姆	380l8y嘉泰姆	0.92l8y嘉泰姆	100l8y嘉泰姆	1000l8y嘉泰姆	NC, IN, LX, GND, FB, COMP, EN, SS, l8y嘉泰姆 NC*3IN, LX, GND, FB, COMP, EN, SSl8y嘉泰姆	SOP-8/MSOP-10(FD)l8y嘉泰姆
CXSD62382/3l8y嘉泰姆	4.75l8y嘉泰姆	20l8y嘉泰姆	3l8y嘉泰姆	380l8y嘉泰姆	1.22/0.92l8y嘉泰姆	100l8y嘉泰姆	1000l8y嘉泰姆	NC, IN, LX, GND, FB, COMP, EN, SSl8y嘉泰姆	SOP-8(FD)l8y嘉泰姆
CXSD62384l8y嘉泰姆	3l8y嘉泰姆	5.5l8y嘉泰姆	2l8y嘉泰姆	ADJl8y嘉泰姆	0.8l8y嘉泰姆	100l8y嘉泰姆	2000l8y嘉泰姆	COMP, GND, EN, IN, LX*2, FQEQ, FBl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62385l8y嘉泰姆	3l8y嘉泰姆	5.5l8y嘉泰姆	4l8y嘉泰姆	ADJl8y嘉泰姆	0.8l8y嘉泰姆	100l8y嘉泰姆	2000l8y嘉泰姆	COMP, GND, EN, IN, LX, LX, FQEQ, FBl8y嘉泰姆	SOP-8(FD)l8y嘉泰姆
CXSD62386/Al8y嘉泰姆	4.5l8y嘉泰姆	24l8y嘉泰姆	2l8y嘉泰姆	380l8y嘉泰姆	1.22/0.92l8y嘉泰姆	90l8y嘉泰姆	1500l8y嘉泰姆	BS, IN, LX, GND, FB, COMP, EN, SSl8y嘉泰姆	SOP-8/MSOP-10(FD)l8y嘉泰姆
CXSD62387/Al8y嘉泰姆	4.5l8y嘉泰姆	24l8y嘉泰姆	3l8y嘉泰姆	380l8y嘉泰姆	1.22/0.92l8y嘉泰姆	90l8y嘉泰姆	1500l8y嘉泰姆	BS, IN, LX, GND, FB, COMP, EN, SSl8y嘉泰姆	SOP-(FD)/DIP-8/MSOP-10(FD)l8y嘉泰姆
CXSD62388/Al8y嘉泰姆	4.75l8y嘉泰姆	24l8y嘉泰姆	2l8y嘉泰姆	380l8y嘉泰姆	1.22/0.92l8y嘉泰姆	90l8y嘉泰姆	1500l8y嘉泰姆	SS/NC, BS, IN, LX, GND, FB, COMP, ENl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62389l8y嘉泰姆	4.5l8y嘉泰姆	28l8y嘉泰姆	3l8y嘉泰姆	ADJl8y嘉泰姆	0.8l8y嘉泰姆	90l8y嘉泰姆	170l8y嘉泰姆	LX, EN, COMP, FB, GND, FREQ, IN, BSl8y嘉泰姆 Dutymax = 1 - (TOFFmin * 900K)l8y嘉泰姆	SOP-8(FD)/DIP-8/TDFN3X3-8l8y嘉泰姆
CXSD62390l8y嘉泰姆	7l8y嘉泰姆	18l8y嘉泰姆	4l8y嘉泰姆	400l8y嘉泰姆	0.8l8y嘉泰姆	90l8y嘉泰姆	700l8y嘉泰姆	EN, BS, IN, LX, VCC, GND, FB, COMPl8y嘉泰姆	SOP-8(FD)l8y嘉泰姆
CXSD62391l8y嘉泰姆	6.5l8y嘉泰姆	24l8y嘉泰姆	2l8y嘉泰姆	385l8y嘉泰姆	1.22/0.92l8y嘉泰姆	90l8y嘉泰姆	1500l8y嘉泰姆	BS, IN, LX, GND, FB, COMP, EN, SSl8y嘉泰姆	SOP-8l8y嘉泰姆
CXSD62392l8y嘉泰姆	4.5l8y嘉泰姆	28l8y嘉泰姆	3l8y嘉泰姆	380l8y嘉泰姆	1.22l8y嘉泰姆	90l8y嘉泰姆	1500l8y嘉泰姆	BS, IN, LX, GND, FB, COMP, EN, SSl8y嘉泰姆	SOP-8(FD)l8y嘉泰姆

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