The CXSD6139 can provide up to 3A of load current with output voltage as low as 0.8V. It can operate

The CXSD6139 can provide up to 3A of load current with output voltage as low as 0.8V. It can operate at 100 duty cycle for low dropout application.With its peak current mode control and outside com

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（产品PDF文档） 
5.产品封装图   6.电路原理图  7.功能概述      8.相关产品

一,产品概述(General Description)      

   The CXSD6139 is a synchronous, 1.4MHz, fix frequency PWM Buck converter. 

It is ideal for powering portable equipment that powered by a single cell 

Lithium-ion batter, or USB port.

     The CXSD6139 can provide up to 3A of load current with output voltage 

as low as 0.8V. It can operate at 100% duty cycle for low dropout application.

With its peak current mode control  and outside compensation, the CXSD6139 

is stable with ceramic capacitors and small inductors.

 CXSD6139 comprises a cycle-by-cycle current limit and thermal shutdown

 to protect itself from  fault application.

      CXSD6139 is available in DFN 3x3 -10 package.

二.产品特点(Features)

Adjustable Output Voltage, 0.8 - Vin

High efficiency, up to 96%

Output voltage accuracy 2%

0.1ohm Rdson of internal MOSFET

3A maximum output current

Up to 1.5MHz fix switching frequency

5.5V maximum operation voltage

Short circuit protection

Thermal shutdown protection

10mV Load regulation at 3A load

Compatible with ceramic output capacitor

Excellent load transient performance

In-rush current suppression

Reverse current suppression for light load

Available in DFN3x3-10 package

三,应用范围 (Applications)

3G network modem

Smart phone, PDA

Digital camera

LCDTV

Portable deviceS

四.技术规格书下载（产品PDF）

需要详细的PDF规格书请扫一扫微信联系我们，还可以获得免费样品以及技术支持！

 

五,产品封装图 (Package)

六.电路原理图

七,功能概述

Supply Input Voltage, VDD, PVDD -------------------------------------------------------------------------- -0.3V to 6V   

LX Pin Switch Voltage -------------------------------------------------------------------------- -0.3V to (PVDD + 0.3V)

Other I/O Pin Voltages ---------------------------------------------------------------------------- -0.3V to (VDD + 0.3V)   

LX Pin Switch Current ---------------------------------------------------------------------------------------------------- 3.5A

Power Dissipation, PD @ TA = 25°C ,DFN-10L 3x3 ----------------------------------------------------------- 900mW

Package Thermal Resistance,DFN-10L3x3, θJA ------------------------------------------------------------- 110°C/W

Junction Temperature --------------------------------------------------------------------------------------------------- 150°C  

Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------------- 260°C

Storage Temperature Range ----------------------------------------------------------------------------- -65°C to 150°C

ESD HBM (Human Body Mode) ----------------------------------------------------------------------------------------- 2k

八,相关芯片选择指南

降压型DC/DC转换器(DC/DC Step-down Converter)
Part No.	Power switching	MODE	VIN	VOUT	IQ	FOSC	Eff.
CXSD6123	Built-in MOSFETSynchronous	PWM/PFM	Max 7V	ADJ	35μA	1.5MHz	96%
CXSD6124	Built-in MOSFETSynchronous	PWM/PFM	2.6~6V	ADJ	40μA	1.5MHz	96%
CXSD6125	Built-in MOSFET Synchronous	PWM/PFM	2.6~7V	ADJ	50μA	1.5MHz	97%
CXSD6126	Built-in MOSFET Synchronous	PWM/PFM	2.5~6V	ADJ	40μA	1.5MHz	96%
CXSD6127	Built-in MOSFET Synchronous	PWM/PFM	2.5~5.5V	ADJ	50μA	1.3MHz	97%
CXSD6128	Built-in MOSFET Synchronous	PWM/PFM	2.6~6V	ADJ	30μA	3MHz	96%
CXSD6129	Built-in MOSFET Synchronous	PWM/PFM	2.6~5.5V	ADJ	50μA	1.4MHz	97%
CXSD6130	Built-in MOSFET Synchronous	PWM/PFM	3.5~16V	ADJ	0.4mA	600KHz	96%
CXSD6131	Built-in MOSFET Synchronous	PWM/PFM	3.5~16V	ADJ	0.4mA	600KHz	96%
CXSD6132	Built-in MOSFET Synchronous	PWM/PFM	4.2~18V	ADJ	0.8mA	500KHz	96%
CXSD6133B	Built-in MOSFET Synchronous	PWM/PFM	4.7~20V	ADJ	50μA	500KHz	95%
CXSD6134	Built-in MOSFET Synchronous	PWM/PFM	4.7~20V	ADJ	50μA	500KHz	95%
CXSD6136	Built-in MOSFET Synchronous	PWM/PFM	4.5~20V	ADJ	50μA	410KHz	95%
CXSD6137	Built-in MOSFET Synchronous	PWM/PFM	4.5~18V	ADJ	80μA	420KHz	95%
CXSD6138	Built-in MOSFET Synchronous	PWM/PFM	4.5~18V	ADJ	80μA	420KHz	95%
CXSD6139	Built-in MOSFET Synchronous	PWM/PFM	4.5~18V	ADJ	80μA	420KHz	95%
CXSD6140	Built-in MOSFET	PWM/PFM	4~24V	ADJ	0.6mA	1.4MHz	90%
CXSD6141	Built-in MOSFET	PWM/PFM	4~38V	ADJ	0.6mA	660KHz	92%
CXSD6141B	Built-in MOSFET	PWM/PFM	4~38V	ADJ	0.6mA	660KHz	92%
CXSD6142	Built-in MOSFET Synchronous	PWM/PFM	4~40V	ADJ	50μA	2MHz	93%
CXSD6143	Built-in MOSFET	PWM/PFM	4.2~40V	ADJ	200μA	1.8MHz	90%
CXSD6144C	Built-in MOSFET Synchronous	PWM/PFM	4.5~24V	ADJ	50μA	500KHz	94%
CXSD6145B	Built-in MOSFET Synchronous	PWM	5~20V	0.923~15V ADJ	60μA	360KHz	94%