CXSD61042S PFM Mode for High Efficiency in Light Load 2A Output Current 100% Duty Cycle in Dropout Operation

CXSD61042S is a 1.5MHz constant frequency, current mode step-down converter. It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions

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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The CXSD61042S is a 1.5MHz constant frequency, current mode step-down converter. It is ideal for portable equipment requiring very high current up to 2A from single-cell Lithium-ion batteries while still achieving over 90% efficiency during peak load conditions. The CXSD61042S also can run at 100% duty cycle for low dropout operation, extending battery life in portable systems while light load operation provides very low output ripple for noise sensitive applications. The CXSD61042S can supply up to 2A output load current from a 2.3V to 6V input voltage and the output voltage can be regulated as low as 0.6V. The high switching frequency minimizes the size of external components while keeping switching losses low. The internal slope compensation setting allows the device to operate with smaller inductor values to optimize size and provide efficient operation. The device is available in a Pb-free, SOP8 package and is rated over the -40°C to +85°C temperature range. 

This device offers two operation modes, PWM control and PFM Mode switching control, which allows a high efficiency over the wider range of the load.

   产品特点 返回TOP

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x High Efficiency: Up to 96% 

x 1.5MHz Constant Frequency Operation 

x 2A Output Current 

x No Schottky Diode Required 

x 2.3V to 6V Input Voltage Range 

x Output Voltage as Low as 0.6V 

x PFM Mode for High Efficiency in Light Load 

x 100% Duty Cycle in Dropout Operation 

x Low Quiescent Current: 40μA 

x Short Circuit Protection 

x Thermal Fault Protection 

x Inrush Current Limit and Soft Start 

x<1μA Shutdown Current 

x SOP8 package

   应用范围 返回TOP

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x Cellular and Smart Phones 

x Wireless and DSL Modems 

x PDAs 

x Portable Instruments 

x Digital Still and Video Cameras 

x PC Cards

   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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低压同步DC-DC降压IC
型号	输入耐压	输出电压	输出电流	反馈电压	工作频率	效率	静态工作电流	待机电流	封装
CXSD61036	2.0-6.0V	1.2V/1.8V/3.3V/可调输出	0.7A	0.6V	1.5MHz	96%	20uA		SOT-25
CXSD61037	2.5-6.0V	可调输出	1A	0.6V	1.5MHz	96%	20uA		SOT-25
CXSD61038	2.0-6.0V	可调输出	1.0A	0.6V	1.5M	96%	20uA	1uA	SOT-25
CXSD61038A	2.3-6.0V	可调输出	1.2A	0.6V	1.5M	96%	35uA	1uA	SOT-25
CXSD61038B	2.3-6.0V	可调输出	1.5A	0.6V	1.5M	96%	35uA	1uA	SOT-25
CXSD61039	2.3-6.0V	可调输出	1.5A	0.6V	1.5M	96%	35uA	1uA	SOT-25
CXSD61040	2.0-6.5V	可调输出	2.0A	0.6V	1.5M	96%	40uA	1uA	SOT-26
CXSD61040B	2.6-6.0V	可调输出	2.0A	0.6V	3M	96%	30uA	0.1uA	SOT-25
CXSD61042S	2.3-6.5V	可调输出	2.0A	0.6V	1.5M	96%	40uA	40uA	SOP-8
CXSD61043S	2.3-6.5V	可调输出	3.0A	0.6V	1.5M	95%	40uA	40uA	ESOP-8
CXSD61044D	2.3V-6.5V	可调输出	1.3A	0.6V	1.5M	96%	35uA	35uA	DFN2*2-6
CXSD61040D	2.3V-6.5V	可调输出	2A	0.6V	1.5M	95%	40uA	40uA	DFN3*3-10
CXSD61043	2.5-6.0V	可调输出	3.0A	0.6V	1MHz	95%	40uA	0.1uA	SOT-25