CXSU63039 high efficiency synchronous boost regulator that converts down to 2.5V input and up to 5.5V output voltage.

发布时间2016-1-15 8:40:59
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产品详细
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1.产品概述         2.产品特点
3.应用范围       4.下载产品资料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)
CXSU63039 is a high efficiency synchronous boost regulator that converts

down to 2.5V input and up to 5.5V output voltage. It adopts NMOS for the

main switch and PMOS for the synchronous switch. It can disconnect the

output from input during the shutdown mode..

It integrates 5A power MOSFET and can output 5V 2.5A with Li-Battery input.
二.产品特点(Features)
1.)2.5V Minimum input voltage
2.)Adjustable output voltage from 3V to 5.5V
3.)6A peak current limit
4.)Input under voltage lockout
5.)600Khz fixed Switching Frequency
6.)Load disconnect during shutdown
7.)Integrated soft-start
8.)Output over voltage protection
30moJTM Power MOSFET
Thermal Shutdown
QFN4x4-16 Package
三,应用范围 (Applications)
1.) Handheld Devices
2.)Power Bank
3.)All Single Cell Li or Dual Cell Battery Operated Products
四,产品封装图 (Package)

PIN NUMBER	PIN NAME	PIN DESCRIPTION
1,15,16	Vout	DC-DC Boost output
3,4	SW	Switch pin , Connect an inductor between IN pin and LX pin.
5,6,7	PGND	Power ground
8	VBAT	VDD Power Supply，need one 1uF MLCC close to VBAT pin and AGND
9	LBI	Low battery comparator input (comparator enabled with EN)
10	SYNC	Enable/disable power save mode (1/VBAT disabled, 0/GND enabled)
11	EN	Shutdown control input., Connect this pin to logic high level to enable the device
12	LBO	Low battery comparator output (open drain)
13	GND	Analog ground
14	FB	Feedback pin
2	NC	No Connected
17	EPAD	Thermal pad, Should connect with Power ground

五,电路原理图

六.产品PDF文档

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QQ截图20160419174301.jpg

七,功能概述

SYNCHRONOUS RECTIFIER
The device integrates an N-channel and a P-channel MOSFET transistor to realize a
synchronous rectifier. Because the commonly used discrete Schottky rectifier is replaced with
a low RDS(ON) PMOS switch, the power conversion efficiency reaches 96%. To avoid
ground shift due to the high currents in the NMOS switch, two separate ground pins are used.
The reference for all control functions is the GND pin. The source of the NMOS switch is
connected to PGND. Both grounds must be connected on the PCB at only one point close to
the GND pin. A special circuit is applied to disconnect the load from the input during
shutdown of the converter. In conventional synchronous rectifier circuits, the backgate diode
of the high-side PMOS is forward biased in shutdown and allows current flowing from the
battery to the output. This device however uses a special circuit which takes the cathode of
the backgate diode of the high-side PMOS and disconnects it from the source when the
regulator is not enabled (EN = low).
The benefit of this feature for the system design engineer is that the battery is not depleted
during shutdown of the converter. No additional components have to be added to the design
to make sure that the battery is disconnected from the output of the converter.
八,相关产品 更多同类产品........

内置MOS同步DC-DC升压IC
型号	工作模式	电压范围	输出电压	输出电压形式	输出电压精度	输出电流限制	效率	静态电流	工作频率	封装
CXSU63033	PWM	0.9V-5.0V	最大5.5V	可调输出	+/-2%	950mA	90%	0.1uA	1.4MHz	SOT-26
CXSU63033A	PWM	0.85V-5.0V	最大5.0V	可调输出	+/-2%	2A	93%	0.1uA	1.5MHz	SOT23-6
CXSU63034	PWM	0.85V-5.5V	2.5V-5.5V	可调输出/真关断	+/-2%	1.2A	94%	300uA	1.2MHz	SOT23-6
CXSU63035	PWM	2.5V-4.5V	最大6V	可调输出	+/-2%	3.3A	93%	100uA	1MHz	ESOP-8
CXSU63036	PWM	2.4V-6.0V	2.5V-5.3V	可调输出/真关断	+/-2%	6A	91%	180uA	500KHz	ESOP-8
CXSU63037	PWM	2.5V-5.25V	2.5V-5.5V	可调输出	+/-2%	8A	90%	45uA	500KHz	ESOP-8
CXSU63038B	PWM	2.8V-5.0V	最大5.5V	可调输出	+/-2%	4A	91%	180uA	550KHz	ESOP-8
CXSU63038A	PWM	2.5V-6.0V	最大5.5V	可调输出/真关断	+/-2%	6A	90%	0.5uA	1.2MHz	SOP8-PP
CXSU63039	PWM	2.5V-5.5V	最大5.5V	可调输出/真关断	+/-2%	6A	90%	0.5uA	1.2MHz	QFN4X4-16L
CXSU63040	PWM	1.8V-6.0V	最大5.5V	可调输出/真关断	+/-2%	6A	90%	0.5uA	1.2MHz	SOP8-PP
CXSU63041B	PWM	1.8V-5.25V	2.5V-5.5V	可调输出	+/-2%	5A	97%	10uA	500KHz	QFN2X2-10