CXDC65112同步降压微型DC转换器内置UVLO欠压锁定功能P沟道MOS驱动晶体管当输入电压变为紫外分压或更低时强制关闭

CXDC65112系列是一种同步降压微型DC/DC转换器，它集成了一个电感和
一个微型封装的控制芯片（2.0毫米×2.5毫米，h=1.0毫米）。内部线圈简化了电路并使
尽量减少由于电路布线引起的噪音和其他操作故障。宽工作电压范围
在2.0V到6.0V之间，支持需要内部固定输出电压（从1.0V到4.0V，增量为0.05V）的应用。在待机期间，所有电路都将关闭，以将电流消耗降低到最低0.1μA
或更少。内置的UVLO（欠压锁定）功能，内部P沟道MOS驱动晶体管
当输入电压变为紫外分压或更低时强制关闭。CXDC65112集成CL放电
使输出电容器CL处的电荷通过内部放电放电的功能
开关位于LX和VSS引脚之间。当设备进入待机模式时，快速输出电压
由于此函数返回到VSS级别

目录

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)      

   The CXDC65112 series is a synchronous step-down micro DC/DC converter which integrates an inductor and 

a control IC in one tiny package (2.0mm×2.5mm, h=1.0mm). An internal coil simplifies the circuit and enables

 minimization of noise and other operational trouble due to the circuit wiring. A wide operating voltage range 

of 2.0V to 6.0V enables support for applications that require an internally fixed output voltage from 1.0V to 4.0V in increments of 0.05V.During stand-by, all circuits are shutdown to reduce currentconsumption to as low as 0.1μA

 or less.With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS driver transistor

 is forced OFF when input voltage becomes UVLO ditect Voltage or lower. The CXDC65112 integrate CL discharge

 function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge

 switch located between the LX and VSS pins. When the devices enter stand-by mode, output voltage quickly

 returns to the VSS level as a result of this function
二.产品特点(Features)

Input Voltage : 2.0V～6.0V
Output Voltage : 1.0V～4.0V (±2.0%, 0.05V step increments)
Control Methods : PFM control
Output Current : 200mA(CXDC65112A/CXDC65112C) 50mA(CXDC65112B/CXDC65112D)
Supply Current : 0.5μA
High Efficiency : 93% (VIN=3.6V,VOUT=3.0V/100μA)
Function : UVLO Short Circuit Protection CL Discharge
Capacitor : Low ESR Ceramic Capacitor
Operating Ambient Temperature : -40℃～+85℃
Packages : CL-2025-02
Environmentally Friendly : EU RoHS Compliant, Pb Free
三,应用范围 (Applications)

● Wearable Devices
● Smart meters
● Bluetooth units
● Energy Harvest devices
● Back up power supply circuits
● Portable game consoles
● Devices with 1 Lithium cell
四.技术规格书下载（产品PDF）

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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)

 

PIN NUMBER	PIN NAME	FUNCTIONS
1	LX	Switching
2	GND	Ground
3	VOUT	Output Voltage
4	CE	Chip Enable
5	NC	Ground
6	VIN	Power Input
7	L1	Inductor Electrodes
8	L2	Inductor Electrodes

六.电路原理图


七,功能概述

PARAMETER	SYMBOL	RATINGS	UNITS
VIN Pin Voltage	VIN	-0.3 ~ +7.0	V
LX Pin Voltage	VLX	(*1) -0.3 ~ VIN+0.3 or +7.0	V
VOUT Pin Voltage	VOUT	(*1) -0.3 ~ VIN+0.3 or +7.0	V
CE Pin Voltage	VCE	-0.3 ~ +7.0	V
LX Pin Current	ILX	1000	mA
Power Dissipation	Pd	(*2) 1000	mW
Operating Ambient Temperature	Topr	-40 ~ +85	˚C
Storage Temperature	Tstg	-55 ~ +125	˚C

八,相关芯片选择指南             更多同类产品.......

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线圈一体型DC/DC转换器
产品名称	封装	类型	控制	FET	VIN (MIN) (V)	VIN MAX (V)	VOUT MIN V	VOUT MAX  V	IOUTorIIN  mA	FB/VOUT 电压精度 (%)	振荡频率 (MHz)	消耗电流 (μA)
CXDC65102	cl2025 cl2025-02	StepUP	PFM	Nch FET Pch FET	0.9	5.5	2	5	100	±2.0	1.2	6.3
CXDC65103	cl2025-02	升压	PWM	Nch FET Pch FET	0.9	6	2	5.5	500mA@VOUT=5.0V, VBAT=3.3V(TYP.) 350mA@VOUT=3.3V,  VBAT=1.8V(TYP.)	±2.0	3
CXDC65104	cl2025-02	升压	Auto PWM/PFM	Nch FET Pch FET	0.9	6	2	5.5	500mA@VOUT=5.0V, VBAT=3.3V(TYP.) 350mA@VOUT=3.3V,  VBAT=1.8V(TYP.)	±2.0	3
CXDC65105	cl2025 cl2025-02	StepDown	PWM	Nch FET Pch FET	2	6	1	4	400	±2.0	1.2	22
CXDC65106	cl2025 cl2025-02	StepDown	PWM PFM	Nch FET Pch FET	2	6	1	4	400	±2.0	1.2	22
CXDC65107	cl2025 cl2025-02	StepDown	PWM	Nch FET Pch FET	2	6	1	4	600	±2.0	3	46
CXDC65108	cl2025 cl2025-02	StepDown	PWM/PFM	Nch FET Pch FET	2	6	1	4	600	±2.0	3	21
CXDC65109	cl2025 cl2025-02	StepDown	PWM/PFM 外部转换	Nch FET Pch FET	2	6	1	4	600	±2.0	3	21
CXDC65110	usp10b03	StepDown	PWM	Nch FET Pch FET	1.8	6	1	4	400	±2.0	3	46
CXDC65111	usp10b03	StepDown	PWM PFM	Nch FET Pch FET	1.8	6	1	4	400	±2.0	3	21
CXDC65112	cl2025-02	StepDown	PFM	Nch FET Pch FET	2	6	1	4	200	±2.0	3	0.5
CXDC65113	usp11b01	StepDown	PWM	Nch FET Pch FET	2.7	6	1	VIN	2000	±2.0	2.4	53
CXDC65114	usp11b01	StepDown	PWM PFM	Nch FET Pch FET	2.7	6	1	VIN	2000	±2.0	2.4	53
CXDC65115	usp9b01	StepDown	PWM	Nch FET Pch FET	2.7	5.5	1	3.6	1500	±2.0	3	400
CXDC65116	usp9b01	StepDown	PWM PFM	Nch FET Pch FET	2.7	5.5	1	3.6	1500	±2.0	3	25
CXDC65117	cl2025-02	StepDown	PWM	Nch FET Pch FET	2.5	5.5	1	3.6	1000		3	400
CXDC65118	cl2025-02	StepDown	PWM PFM	Nch FET Pch FET	2.5	5.5	1	3.6	1000		3	40
CXDC65119	cl2025-02	StepDown	PWM	Nch FET Pch FET	2.5	5.5	1	3.6	500		1.2	250
CXDC65120	cl2025-02	StepDown	PWM/PFM	Nch FET Pch FET	2.5	5.5	1	3.6	500		1.2	1