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
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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）
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) |
V |
|
VOUT Pin Voltage |
VOUT |
(*1) |
V |
|
CE Pin Voltage |
VCE |
-0.3 ~ +7.0 |
V |
|
LX Pin Current |
ILX |
1000 |
mA |
|
Power Dissipation |
Pd |
(*2) |
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.......
|
线圈一体型DC/DC转换器 |
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|
产品名称 |
封装 |
类型 |
控制 |
FET |
VIN (MIN) (V) |
VIN MAX |
VOUT MIN V |
VOUT MAX V |
IOUTorIIN mA |
FB/VOUT 电压精度 (%) |
振荡频率 (MHz) |
消耗电流 (μA) |
|
cl2025 |
StepUP |
PFM |
Nch FET |
0.9 |
5.5 |
2 |
5 |
100 |
±2.0 |
1.2 |
6.3 |
|
|
cl2025-02 |
升压 |
PWM |
Nch 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 |
||
|
cl2025-02 |
升压 |
Auto PWM/PFM |
Nch FET |
0.9 |
6 |
2 |
5.5 |
500mA@VOUT=5.0V, VBAT=3.3V(TYP.) VBAT=1.8V(TYP.) |
±2.0 |
3 |
||
|
cl2025 |
StepDown |
PWM |
Nch FET |
2 |
6 |
1 |
4 |
400 |
±2.0 |
1.2 |
22 |
|
|
cl2025 |
StepDown |
PWM PFM |
Nch FET |
2 |
6 |
1 |
4 |
400 |
±2.0 |
1.2 |
22 |
|
|
cl2025 |
StepDown |
PWM |
Nch FET |
2 |
6 |
1 |
4 |
600 |
±2.0 |
3 |
46 |
|
|
cl2025 |
StepDown |
PWM/PFM |
Nch FET |
2 |
6 |
1 |
4 |
600 |
±2.0 |
3 |
21 |
|
|
cl2025 |
StepDown |
PWM/PFM 外部转换 |
Nch FET |
2 |
6 |
1 |
4 |
600 |
±2.0 |
3 |
21 |
|
|
usp10b03 |
StepDown |
PWM |
Nch FET |
1.8 |
6 |
1 |
4 |
400 |
±2.0 |
3 |
46 |
|
|
usp10b03 |
StepDown |
PWM PFM |
Nch FET |
1.8 |
6 |
1 |
4 |
400 |
±2.0 |
3 |
21 |
|
|
cl2025-02 |
StepDown |
PFM |
Nch FET |
2 |
6 |
1 |
4 |
200 |
±2.0 |
3 |
0.5 |
|
|
usp11b01 |
StepDown |
PWM |
Nch FET |
2.7 |
6 |
1 |
VIN |
2000 |
±2.0 |
2.4 |
53 |
|
|
usp11b01 |
StepDown |
PWM PFM |
Nch FET |
2.7 |
6 |
1 |
VIN |
2000 |
±2.0 |
2.4 |
53 |
|
|
usp9b01 |
StepDown |
PWM |
Nch FET |
2.7 |
5.5 |
1 |
3.6 |
1500 |
±2.0 |
3 |
400 |
|
|
usp9b01 |
StepDown |
PWM PFM |
Nch FET |
2.7 |
5.5 |
1 |
3.6 |
1500 |
±2.0 |
3 |
25 |
|
|
cl2025-02 |
StepDown |
PWM |
Nch FET |
2.5 |
5.5 |
1 |
3.6 |
1000 |
3 |
400 |
||
|
cl2025-02 |
StepDown |
PWM PFM |
Nch FET Pch FET |
2.5 |
5.5 |
1 |
3.6 |
1000 |
3 |
40 |
||
|
cl2025-02 |
StepDown |
PWM |
Nch FET |
2.5 |
5.5 |
1 |
3.6 |
500 |
1.2 |
250 |
||
|
cl2025-02 |
StepDown |
PWM/PFM |
Nch FET |
2.5 |
5.5 |
1 |
3.6 |
500 |
1.2 |
1 |
||
