基于CMOS的PFM升压DC-DC变换器CXSU6337输出电压3.3V输入电压1.8V输出200mA启动电源电压0.8V

CXSU6337系列CXSU6337C是基于CMOS的PFM升压型DC-DC变换器。转换器可以
启动电源电压低至0.8V，并能最大输出。输入电压为1.8V，输出电压为3.3V时输出电流为200mA。静止的从电源引出的电流低至5.5uA。所有这些特性使CXSU6337系列适用于便携式设备，由单电池到四电池。减少开关引起的噪音调节器，CXSU6337在电路设计和制造方面考虑周到，从而大大减少了器件的干扰电路

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)      

       CXSU6337  CXSU6337C series are CMOS-based PFM step-up DC-DC Converter. The converter can 

start up by supply voltage as low as 0.8V, and capable of delivering maximum

 200mA output current at 3.3V output with 1.8V input Voltage. Quiescent 

current drawn from power source is as low as 5.5uA. All of these features make 

CXSU6337 series be suitable for the portable devices, which are supplied by a

 single battery to four-cell batteries.To reduce the noise caused by the switch 

regulator, CXSU6337 is well considerate in circuit design and manufacture,

so that the interferer toother circuits by the device is reduced greatly.

       CXSU6337 integrates stable reference circuits and trimming technology, so it

can afford high precision and low temperature-drift coefficient of the output voltage.

  CXSU6337 is available in SOT-89-3, SOT-23-3, SOT-23-5 and TO-92 packages, 

which is PB free. And in 5-pin packages, such as SOT-23-5, the device can be 

switch on or off easily by CE pin, to minimize the standby supply current.

二.产品特点(Features)

Deliver 200mA at 3.3V Output voltage with 1.8V input Voltage

Low start-up voltage (when the output current is 1mA)-------------0.8V

Output voltage can be adjusted from 2.5V～6.0V (In 0.1V step)

Output voltage accuracy ---------------±2％

Low temperature-drift coefficient of the output voltage-------±100ppm/℃

Only   three   external   components   are necessary: An inductor, 

a Schottky diode and an output filter capacitor

High power conversion efficiency-----85％

Low quiescent current drawn from power source--------------------<5.5uA

三,应用范围 (Applications)

Power Source for PDA, DSC, MP3 Player,

Electronic toy and wireless mouse

Power Source for a Single or Dual-cell

Battery-Powered Equipments

Power Source for LED

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

Parameter		Value
output Voltage Range		-0.3V-12V
LX Voltage		-0.3V-6.5V
CE Pin Voltage		-0.3V-(Vout+0.3)
Lx Pin Output Current		0.7A
Operating Junction Temperature (Tj)		125°C
Ambient Temperature (Ta)		-40°C -85°C
Power Dissipation	SOT-23-3	250mW
	SOT-23-5	250mW
	SOT-89-3	500mW
	TO-92	500mW
Storage Temperature (Ts)		-40°C -150°C
Lead Temperature &   Time		260°C, 10S

八,相关芯片选择指南

升压型DC/DC转换器(DC/DC Step-up Converter )
Part No.	MODE	VIN	VOUT	IQ	FOSC	Eff.	Accu.	Power switching	IOUT	Package
CXSU6337	PFM	0.8~5.5V	2.5~6V 100mV Step	4μA	450KHz	85%	±2%	Internal MOSFET	300mA	SOT89-3 SOT23-3 SOT23-5
CXSU6337C	PFM	0.8~5.5V	2.5~6V 100mV Step	6μA	400KHz	90%	±2%	External MOSFET	-	SOT89-5 SOT23-3 SOT23-5
CXSU6338B	Sync Boost PFM/PWM	0.85~5V	3.3, 5V, ADJ	25μA	1MHz	95%	±2%	Internal Sync Rectifier	300mA	SOT23-5
CXSU6339	Sync Boost PWM	0.9~5V	1.8~3.6V	8μA	1MHz	94%	±2%	Internal Sync   Rectifier	300mA	SOT89-3 SOT23-3 SOT23-5
CXSU6340	Sync Boost PWM	0.9~5V	1.8~3.6V	8μA	1MHz	94%	±2%	Internal Sync Rectifier	300mA	SOT89-3 SOT23-3 SOT23-5