CXDC65110系列是一种同步降压微型DC/DC转换器，它集成了
感应器和一个控制IC，一个小包装（2.5mm×2.15mm，h=1.05mm）。稳定的电源
400毫安的输出电流仅使用两个外部连接的电容器进行配置。内部线圈简化了
该电路能够最大限度地减少由于电路布线而引起的噪音和其他操作故障。
1.8V（2.0V）至6.0V的宽工作电压范围支持需要碱性的应用
电池（2芯）或交流适配器（5V）电源。内部固定输出电压（0.8V至4.0V）或外部
可选择设定输出电压。
CXDC65110/CXDC65111系列使用工作频率为3.0兆赫的同步整流。脉冲宽度调制
可以选择控制（CXDC65110）或自动PWM/PFM开关控制（CXDC65111）。CXDC65110系列
具有固定频率，能够抑制输出纹波。CXDC65111系列实现了高效率
同时抑制从轻到重的整个负载范围内的输出纹波，使
电池工作时间，提供带CL放电的软启动和开/关功能，可投入IC
通过向CE引脚输入低电平信号的待机状态。
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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 CXDC65110/CXDC65111 series is a synchronous step-down micro DC/DC converter which integrates an
inductor and a control IC in one tiny package (2.5mm×2.15mm, h=1.05mm). A stable power supply with an
output current of 400mA is configured using only two capacitors connected externally.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 1.8V (2.0V) to 6.0V enables support for applications that require an alkaline
battery (2-cell) or AC adapter (5V) power supply. An internally fixed output voltage (0.8V to 4.0V) or an externally
set output voltage can be selected.
The CXDC65110/CXDC65111 series uses synchronous rectification at an operating frequency of 3.0MHz. PWM
control (CXDC65110) or automatic PWM/PFM switching control (CXDC65111) can be selected. The CXDC65110 series
has a fixed frequency, enabling the suppression of output ripple. The CXDC65111 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.Soft start and on/off functions with CL discharge are provided, and the IC can be put in
the standby state by inputting a Low level signal into the CE pin.
二.产品特点(Features)
Input Voltage : 1.8V ~ 6.0V (Type F)
: 2.0V ~ 6.0V (Type A/B)
Fixed Output Voltage : 0.8V ~ 4.0V (±2.0%)
High Efficiency : 90% (VIN=4.2V, VOUT=3.3V)
Output Current : 400mA
Oscillation Frequency : 3.0MHz (±15%)
CE Function : Active High Soft-start Circuit Built-in CL High Speed Auto Discharge
Protection Circuits : Current Limiter Built-in (Constant Current & Latching)
Control Methods : PWM (CXDC65110) PWM/PFM (CXDC65111)
Operating Ambient Temperature : -40℃～+85℃ Package : USP-10B03
Environmentally Friendly : EU RoHS Compliant, Pb Free
三,应用范围 (Applications)
●Mobile phones, Smart phones
●Bluetooth Headsets
●Tablet PCs
●PND
●PC peripheral devices
●DSC, Camcorders
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 |
|
USP-10B03 |
||
|
1 |
||
|
PVSS |
(Power) Ground |
|
|
2 |
LX |
Switching Output |
|
3 |
NC |
No Connection |
|
4 |
FB |
Output Voltage Sense Pin (Type F) |
|
VOUT |
Fixed Output Voltage Pin (Type A/B) |
|
|
5 |
AVSS |
(Analog) Ground |
|
6 |
CE |
Active High Enable |
|
7 |
NC |
No Connection |
|
8 |
VIN |
Power Supply Input |
|
9 |
L1 |
Inductor Electrodes |
|
10 |
L2 |
Inductor Electrodes |
六.电路原理图
七,功能概述
|
PARAMETER |
SYMBOL |
RATINGS |
UNITS |
|
Input Voltage |
VIN |
-0.3～6.5 |
V |
|
Lx Pin Voltage |
VLx |
-0.3～VIN+0.3≦6.5 |
V |
|
Output Voltage |
VOUT |
-0.3～6.5 |
V |
|
FB Pin Voltage |
VFB |
-0.3～6.5 |
V |
|
CE Input Voltage |
VCE |
-0.3～6.5 |
V |
|
Lx Pin Current |
ILX |
±1500 |
mA |
|
(*1) |
Pd |
500 |
mW |
|
Operating Ambient Temperature |
Topr |
-40～+85 |
℃ |
|
Storage Temperature |
Tstg |
-40～+125 |
℃ |
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 |
||||||||||||
|
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 |
||
