输出关断功能和可调输出电流限制CXSU63233紧凑高效同步升压转换器电流模式控制快速瞬态响应与内部补偿

CXSU63233是一款紧凑、高效、同步升压转换器，内置功率mosfet，具有输出关断功能和可调输出电流限制，可折叠用于单电池锂离子/聚合物电池。CXSU63233仅使用70μA（典型值）静态电流，仅在空载和轻载需要时允许转换器切换，当负载高于100mA时，在1MHz下使用固定频率的PWM技术。它的特点是电流模式控制快速瞬态响应与内部补偿。该CXSU6323包括逐周期电流限制到最大电感电流和过温保护电路

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（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 CXSU63233 is a compact, high-efficiency, synchronous step-up converter with power Mosfets embedded and with output turn off true shutdown function and adjustable output current limiting with foldback for a single-cell Li-ion/polymer battery. The CXSU63233 uses only 70μA (typ) quiescent current and allows the converter to switch only when needed at no load and light loads, and when load is higher than 100mA, it uses fixed-frequency PWM technique at 1MHz. It features a current mode control for fast transient response with internal compensation. The CXSU63233 includes cycle-by-cycle current limit to maximum inductor current and over-temperature protection circuit. The CXSU63233 is suitable for iPad-like computers, smart phones and portable handheld devices. The CXSU63233 is available in a SOP8 (FD) package. The operating temperature range is from -45°C to +85°C.

   产品特点 返回TOP

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„ Up to 90% Efficiency at Iout=2A VOUT = 5V from 3.3V Input 

„ Low 70μA Quiescent Current 

„ Guaranteed 3A Output Current at VOUT = 5V from 3.3V Input 

„ 1MHz PWM Switching Frequency 

„ Synchronous and Embedded Power Mosfets; No Schottky Diode Required 

„ Internal Soft-Start to Limit Inrush Current 

„ Adjustable Output 

„ Output turn off true shutdown function 

„ Current Mode Operation with Internal Compensation for Excellent Line and Load Transient Response 

„ Overload/Short-Circuit Protection with hiccup control 

„ Shutdown Current<1μA 

„ Thermal Shutdown 

„ Compact 8 pin,SOP8 (FD) package

   应用范围 返回TOP

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iPad-like computers, smart phones and portable handheld devices.

   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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Step Up Controller
Part   NO.	Vin(V) min.	Vin(V) max.	FSW (kHz)	FB(V)	TON min(ns)	TOFF min(ns)	Note	Package
CXSU63229	4.5	27	35~1000	0.7	400	200	SHDN,SS,OCP,   COMP,UVLO	MSOP-10(FD)
CXSU63230/A	4.5	27	35~1000	0.7	400	200	SHDN,SS, OCP, COMP,UVLO	MSOP-10(FD)
CXSU63231	2.5	13.5	10~1000	0.5	--	--	SS,SCP,UVLO, Dutymax=85%	TSSOP-8/SOP-8
CXSU63232	2.2	6	20~1000	0.5	--	--	SS,SCP,UVLO, Dutymax=85%	SOP-8/MSOP-8/TSSOP-8
Part   NO.	Vin(V) min.	Vin(V) max.	VOUT (max)(V)	FSW (kHz)	FB>(V)	ISW (A)	Note	Package
CXSU63233	2.5	5.5	5.075	1000	1.227	6.5	LX, LX,VBAT,   ILM0,ILM1,GND, FB,OC,VOUT, VOUT, Synchronous Boost	SOP-8(FD)
CXSU63234	2.5	5.5	22	600/1200	1.24	4	COMP,FB,EN, GND*2,LX*2,IN, FREQ,SS	TDFN3X3-10
CXSU63235	2.5	5.5	24	600/1200	1.24	2	COMP,FB,EN, GND,SW,VCC, FSL,SS	MSOP-8
CXSU63236	2.5	5.5	28	600/1200	1.24	4.6	COMP,FB,EN, GND*2,LX*2,IN, FREQ,SS	TDFN3X3-10
CXSU63237	2.5	6	28	1000	1.23	0.6	IN-,SCP,VCC,BR, OUT,GND,OSC, FB	SOT-23-5
CXSU63238	2.7	5.5	33	1000	1.25	0.85	LX,GND,FB,EN,IN	SOT-23-5
CXSU63239	2.7	5.5	30	1000	1.25	0.85	LX,GND,FB,EN,IN	SOT-23-5