2.5V至6V输入电压高效单片同步降压稳压器CXSD62323恒定频率电流模式轻载高效PFM模式100%占空比高效高达96%

CXSD62323是一种高效的单片同步降压稳压器，采用恒定频率、电流模式架构。该设备有可调版本。空载供电电流为40uA，停机时降至<1uA。2.5V到6V的输入电压范围使CXSD62323非常适合单锂离子电池供电的应用。100%占空比提供低漏失操作，延长便携式系统的电池寿命。PWM/PFM模式操作为噪声敏感应用提供非常低的输出纹波电压。

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 CXSD62323 is a high-efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. The device is available in an adjustable version. Supply current with no load is 40uA and drops to<1uA in shutdown. The 2.5V to 6V input voltage range makes the CXSD62323 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provides low dropout operation, extending battery life in portable systems. PWM/PFM mode operation provides very low output ripple voltage for noise sensitive applications.Switching frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and capacitors. Low output voltages are easily supported with the 0.6V feedback reference voltage.The CXSD62323 is offered in a low profile (1mm) 5-pin, thin SOT package, and is available in an adjustable version.

   产品特点 返回TOP

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 High Efficiency: Up to 96% 

 2.5V to 6V Input Voltage Range 

 1.5MHz Constant Frequency Operation 

 No Schottky Diode Required 

 Low Dropout Operation:100% Duty Cycle 

 PFM Mode for High Efficiency in Light Load 

 Over temperature Protected 

 Low Quiescent Current: 40μA 

 Short Circuit Protection 

 Inrush Current Limit and Soft Start 

 SOT23-5 package

   应用范围 返回TOP

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 Cellular and Smart Phones 

 Wireless and DSL Modems 

 PDAs 

 Portable Instruments 

 Digital Still and Video Cameras 

 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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Buck DC/DC Converter
Product	Status	Device Description	VIN(min~max)	VOUT	IOUT	IQ(typ)	Vfb	Frequency	Pkg
CXSD62319	Active	40V/1.5A非同步降压	3~36V	ADJ	1.5A	4mA	1.25V	<100KHZ	DIP8 SOP8
CXSD62320	Active	30V/2A同步降压	4.5~27V	0.925~20Vin	2A	1.3mA	0.925V	340KHZ	SOP8 PSOP8
CXSD62321	Active	30V/2A同步降压	4.5~27V	0.925~20Vin	3A	1.3mA	0.925V	340KHZ	PSOP8
CXSD62322	NEW	40V/4.5A同步降压/线补/CC/CV/OC	7~40V	5V	4.5A	1.5mA	5V	150KHZ	PSOP8
CXSD62323	Active	5V/2A同步降压	2.5~5V	ADJ	2A	20uA	0.6V	1.5MHZ	SOT23-5
CXSD62324	Active	5V/1.4A同步降压	2.5~5V	ADJ	1.4A	25uA	0.6V	1.5MHZ	SOT23-5
CXSD62325	NRFND	40V/2.8A非同步降压/CC/CV	8~36V	ADJ	2.8A	2mA	1V	250KHZ	PSOP8
CXSD62326	Active	5V/3A同步降压	3.3~18V	ADJ	2A	10uA	0.6V	1.5MHZ	SOT23-6