3V至28V适配器或电池输入6A同步DC/DC buck变换器40μA的低静态电流CXSD62371电流模式PWMs中的电流感应电阻单级降压转换

CXSD62371是一个6A同步DC/DC buck变换器，集成了30mΩN沟道高侧MOSFET和15mΩN沟道低侧MOSFET。它使用恒定的实时控制方案来轻松处理宽的输入/输出电压比，并在保持相对恒定的开关频率的同时，提供对负载瞬变的100ns“瞬时通电”响应

目录

1.产品概述       2.产品特点     

3.应用范围       4.技术规格书下载（PDF文档）

5.产品封装       6.电路原理图  

7.相关产品

   产品概述 返回TOP

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    CXSD62371 is a 6A, synchronous DC/DC buck converter with integrated 30mΩ N-channel high-side MOSFET and 15mΩ N-channel low-side MOSFET. It uses constant on-time control scheme to handle wide input/output voltage ratios with ease and provides 100ns “instant-on” response to load transients while maintaining a relatively constant switching frequency. The CXSD62371 achieves high efficiency at a reduced cost by eliminating the current-sense resistor found in traditional current-mode PWMs. Single-stage buck conversion allows these devices to directly step down high-voltage batteries for the highest possible efficiency. The GCXSD62371is intended for the power supply of Notebook Computer, or other low-voltage supplies as low as 0.75V. The GCXSD62371is available in QFN3X3-24 package.

   产品特点 返回TOP

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„ Ultra-High Efficiency 

„ Low Quiescent Current of 40μA 

„ Integrated 15mΩ at VCC=5V N-Channel MOSFET for Low Side 

„ Integrated 30mΩ at VCC=5V N-Channel MOSFET for High Side 

„ No Current-Sense Resistor (Lossless ILIMIT) 

„ Quasi-PWM with 100ns Load-Step Response 

„ 1% VOUT Accuracy Over Line and Load 

„ Programmable Switching Frequency

„ 0.75V to 3.6V Adjustable Output Range 

„ 3V to 28V Adapter or Battery Input Range 

„ Integrated Boost Switch 

„ OVP & UVP 

„ Over Temperature Protection (non-latch) 

„ 2ms Soft-Start 

„ Power-Good Indicator

   应用范围 返回TOP

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„ Notebook Computers 

„ I/O Supply 

„ Chipset/RAM Supply as Low as 0.75V 

„ Networking Power Supply

   技术规格书（产品PDF) 返回TOP 

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产品封装图 返回TOP

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电路原理图 返回TOP

 

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Point Of Load(Synchronous Quasi-PWM Step Down Converter)
Part   NO.	Vin(V) min.	Vin(V) max.	Ilimit (V)	FSW (kHz)	FB(V)	HSRON (mohm)	LSRON (mohm)	Note	Package
CXSD62363	4.5	28	10	ADJ	0.75	20	8.5	With 5V Supply, EN, PGOOD	QFN4X4-28 QFN5X5-32
CXSD62364	4.5	28	10	ADJ	0.75	20	8.5	EN, PGOOD,   ILMIT set by R	QFN4X4-28
CXSD62365	4.5	28	8	ADJ	0.75	20	20	With 5V   Supply, EN, PGOOD	QFN4X4-28 QFN5X5-32
CXSD62366	4.5	28	6	ADJ	0.75	20	20	EN, PGOOD, ILMIT set by R	QFN4X4-28
CXSD62367	4.5	28	8	ADJ	0.9	30	15	With 5V Supply, EN, PGOOD, Low Iq	QFN3X3-21
CXSD62367A	4.5	28	4	ADJ	0.9	30	30	With 5V Supply, EN, PGOOD, Low Iq	QFN3X3-21
CXSD62368	4.5	28	10	ADJ	0.8	20	8.5	EN, PGOOD, MLCC, Soft Start adjustable	QFN4X4-23  2 Thermal Pads
CXSD62369	5.5	28	8	ADJ	5.05	20	17	5V System Power Rail,LDO5 Switchover5V,ON5, ENL,PGOOD,Low Iq,MLCC,Ultrasonic with VCLK	QFN4X4-28  2 Thermal Pads
CXSD62370A	5.5	28	10	ADJ	5.05	20	8.5	5V System  Power Rail, LDO5 Switchover5V, ON5 ENL,PGOOD,Low Iq,MLCC,Ultrasonic   with VCLK	QFN4X4-28, 2 Thermal Pads
CXSD62370B	5.5	28	8	ADJ	3.33	20	17	3V System Power Rail, LDO3 Switchover3V, ON3, ENL,PGOOD,Low Iq,MLCC,Ultrasonic with VCLK	QFN4X4-28  2 Thermal Pads
CXSD62371	3	28	8	ADJ	0.75	30	15	EN, PGOOD, Low   Iq, MLCC	QFN3X3-24     2 Thermal Pads
CXSD62372	5.5	28	8	ADJ	0.9	30	15	With   5V Supply, EN, PGOOD, Low Iq, MLCC	QFN3X3-24     2 Thermal Pads
CXSD62372A	5.5	28	4	ADJ	0.9	30	30	With 5V   Supply, EN, PGOOD, Low Iq, MLCC	QFN3X3-24    2 Thermal Pads
CXSD62373	3	28	10	ADJ	0.75	20	8.5	EN,   PGOOD, Low Iq, MLCC	QFN4X4-28     2 Thermal Pads
CXSD62373A	3	28	8	ADJ	0.75	30	15	EN, PGOOD, Low   Iq, MLCC	QFN4X4-28  2 Thermal Pads