CXDC65113限流电路软启动电路内置于CL放电低ESR陶瓷电容器同步降压微型DC转换器自动脉宽调制功率因数调制开关控制

CXDC65113系列是一种同步降压微型DC/DC转换器，它集成了一个微型封装3.1mm×4.7mm，h=1.3mm）的电感和控制IC，内部线圈简化了电路
使电路布线引起的噪音和其他操作故障最小化。广泛的操作
电压范围为2.7V至6.0V，支持需要外部设置输出电压的应用
被选中。CXDC65113/CXDC65114系列使用工作频率为
2.4兆赫。可以选择脉宽调制控制（CXDC65113）或自动脉宽调制/功率因数调制开关控制（CXDC65114）。
CXDC65113系列具有固定频率，能够抑制输出纹波。CXDC65114系列在降低从轻到重的整个负载范围内的输出纹波的同时实现高效率，延长电池工作时间。
该系列有一个高速软启动快至1毫秒在典型的快速启动。内置的UVLO
（欠压锁定）功能，当输入电压时，内部P通道驱动晶体管被强制关闭
变为2.4V或更低。限流配置为4.0A in，适合大电流应用
典型的。集成的电容放电功能，可在输出电容器上充电
通过位于LX和GND之间的内部放电开关放电
别针。由于CL放电功能，在待机模式下防止LX故障

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 CXDC65113/CXDC65114 series is a synchronous step-down micro DC/DC converter which integrates an
inductor and a control IC in one tiny package (3.1mm×4.7mm, h=1.3mm).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 2.7V to 6.0V enables support for applications that require an externally set output voltage can
be selected. The CXDC65113/CXDC65114 series uses synchronous rectification at an operating frequency of
2.4MHz. PWM control(CXDC65113) or automatic PWM/PFM switching control (CXDC65114) can be selected.
The CXDC65113 series has a fixed frequency,enabling the suppression of output ripple. The CXDC65114 series
achieves high efficiency while holding down output ripple across the full range of loads, from light to heavy,
enabling the extension of battery operation time.
  The series have a high speed soft-start as fast as 1ms in typical for quick turn-on. With the built-in UVLO
(Under Voltage LockOut) function, the internal P-channel driver transistor is forced OFF when input voltage
becomes 2.4V or lower. It’s suitable for large-current application due to limit current is configured 4.0A in
typical. The integrated 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 GND
pins. Due to CL discharge function, malfunction on LX is prevented when Stand-by mode
二.产品特点(Features)

Package Size : 3.1mm×4.7mm, h=1.3mm
Input Voltage : 2.7V～6.0V
Output Voltage : 0.9V～VIN (FB Voltage=0.8V±2%)
High Efficiency : 94% (VIN=5.0V, VOUT=3.3V)
Output Current : 2.0A
Oscillation Frequency : 2.4MHz (±15%)
Maximum Duty Cycle : 100%
Control Methods : PWM (CXDC65113) PWM/PFM (CXDC65114)
Functions : Current Limit Circuit (automatic return) Soft-Start Circuit Built-In CL Discharge, UVLO
Output Capacitor : Low ESR Ceramic Capacitor
Operating Ambient Temperature : -40℃～+85℃
Package : USP-11B01
Environmental Friendly : EU RoHS Compliant, Pb Free
三,应用范围 (Applications)

●Note PCs
●Printers
●Tablet PCs
●PND(Portable Navigation Device)
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)

 

PIN NUMBER	PIN NAME	FUNCTIONS
1	NC	No Connection
2	Lx	Switching Output
3	Lx	Switching Output
4	NC	No Connection
5	FB	Output Voltage Monitor
6	CE	Chip Enable
7	AVIN	Analog Input
8	GND	Ground
9	PVIN	Power Input
10	L1	Inductor Electrodes
11	L2	Inductor Electrodes

六.电路原理图


七,功能概述

PARAMETER		SYMBOL	RATINGS	UNIT
PVIN Pin Voltage		VPVIN	(*1) -0.3 ~ +7.0	V
AVIN Pin Voltage		VAVIN
CE Pin Voltage
VCE	-0.3 ~ +7.0	V
FB Pin Voltage		VFB	-0.3 ~ +7.0	V
Lx Pin Voltage		VLx	(*2) -0.3 ~ +7.0 or VPVIN +0.3	V
Lx Pin Current		ILx	(*3) ±6.0	A
Power Dissipation	USP-11B01	Pd	1000	mW
Operating Ambient Temperature		Topr	-40 ~ +85	℃
Storage Temperature		Tstg	-55 ~ +125	℃

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