CXSD6127 is a high-efficiency, DC-to-DC step-down switching regulators, capable of delivering up to 2A of output current. The device operates from an input voltage range of 2.5V to 5.5V and provides
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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（产品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 CXSD6127 is a high-efficiency, DC-to-DC step-down switching regulators, capable of delivering up to 2A of
output current. The device operates from an input voltage range of 2.5V to 5.5V and provides an output voltage
from 0.6V to VIN, making the CXSD6127 ideal for low voltage power conversions. Running at a fixed frequency
of 1.3MHz allows the use of small external components,such as ceramic input and output caps, as well as small
inductors, while still providing low output ripples. This low noise output along with its excellent efficiency
achieved by the internal synchronous rectifier, making CXSD6127 an ideal green replacement for large power
consuming linear regulators. Internal soft-start control circuitry reduces inrush current. Short-circuit and
thermal-overload protection improves design reliability.The CXSD6127 is available in a SOT23-6 Package.
二.产品特点(Features)
High Efficiency: Up to 97%
Capable of Delivering 2A
1.3MHz Switching Frequency
No External Schottky Diode Needed
Light-load Mode
Internal Compensation and Soft-Start
Current Mode control
0.6V Reference for Low Output voltages
Logic Control Shutdown (IQ<1uA)
Thermal shutdown and UVLO
Available in SOT23-6
三,应用范围 (Applications)
Digital Cameras
MP3 and MP4 players
Set top boxes
Wireless and DSL Modems
USB supplied Devices in Notebooks
Portable Devices
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 NO |
SYMBOL |
DESCRIPTTION |
|
1 |
EN |
Enable pin |
|
2 |
GND |
Ground |
|
3 |
SW |
Power Switch Output |
|
4 |
IN |
Power Supply Input |
|
5 |
NC |
Not Connected |
|
6 |
FB |
Feedback input pin |
六.电路原理图
七,功能概述
|
Parameter |
Value |
|
|
Max Input Voltage |
6.5V |
|
|
Max Operating Junction Temperature(Tj) |
125°C |
|
|
Ambient Temperature(Ta) |
-40°C – 85°C |
|
|
Maximum Power Dissipation |
SOT23-5 |
400mW |
|
Storage Temperature(Ts) |
-40°C - 150°C |
|
|
Lead Temperature & Time |
260°C, 10S |
|
八,相关芯片选择指南
| 降压型DC/DC转换器(DC/DC Step-down Converter) | |||||||
| Part No. | Power switching | MODE | VIN | VOUT | IQ | FOSC | Eff. |
| CXSD6123 | Built-in MOSFETSynchronous | PWM/PFM | Max 7V | ADJ | 35μA | 1.5MHz | 96% |
| CXSD6124 | Built-in MOSFETSynchronous | PWM/PFM | 2.6~6V | ADJ | 40μA | 1.5MHz | 96% |
| CXSD6125 | Built-in MOSFET Synchronous | PWM/PFM | 2.6~7V | ADJ | 50μA | 1.5MHz | 97% |
| CXSD6126 | Built-in MOSFET Synchronous | PWM/PFM | 2.5~6V | ADJ | 40μA | 1.5MHz | 96% |
| CXSD6127 | Built-in MOSFET Synchronous | PWM/PFM | 2.5~5.5V | ADJ | 50μA | 1.3MHz | 97% |
| CXSD6128 | Built-in MOSFET Synchronous | PWM/PFM | 2.6~6V | ADJ | 30μA | 3MHz | 96% |
| CXSD6129 | Built-in MOSFET Synchronous | PWM/PFM | 2.6~5.5V | ADJ | 50μA | 1.4MHz | 97% |
| CXSD6130 | Built-in MOSFET Synchronous | PWM/PFM | 3.5~16V | ADJ | 0.4mA | 600KHz | 96% |
| CXSD6131 | Built-in MOSFET Synchronous | PWM/PFM | 3.5~16V | ADJ | 0.4mA | 600KHz | 96% |
| CXSD6132 | Built-in MOSFET Synchronous | PWM/PFM | 4.2~18V | ADJ | 0.8mA | 500KHz | 96% |
| CXSD6133B | Built-in MOSFET Synchronous | PWM/PFM | 4.7~20V | ADJ | 50μA | 500KHz | 95% |
| CXSD6134 | Built-in MOSFET Synchronous | PWM/PFM | 4.7~20V | ADJ | 50μA | 500KHz | 95% |
| CXSD6136 | Built-in MOSFET Synchronous | PWM/PFM | 4.5~20V | ADJ | 50μA | 410KHz | 95% |
| CXSD6137 | Built-in MOSFET Synchronous | PWM/PFM | 4.5~18V | ADJ | 80μA | 420KHz | 95% |
| CXSD6138 | Built-in MOSFET Synchronous | PWM/PFM | 4.5~18V | ADJ | 80μA | 420KHz | 95% |
| CXSD6139 | Built-in MOSFET Synchronous | PWM/PFM | 4.5~18V | ADJ | 80μA | 420KHz | 95% |
| CXSD6140 | Built-in MOSFET | PWM/PFM | 4~24V | ADJ | 0.6mA | 1.4MHz | 90% |
| CXSD6141 | Built-in MOSFET | PWM/PFM | 4~38V | ADJ | 0.6mA | 660KHz | 92% |
| CXSD6141B | Built-in MOSFET | PWM/PFM | 4~38V | ADJ | 0.6mA | 660KHz | 92% |
| CXSD6142 | Built-in MOSFET Synchronous | PWM/PFM | 4~40V | ADJ | 50μA | 2MHz | 93% |
| CXSD6143 | Built-in MOSFET | PWM/PFM | 4.2~40V | ADJ | 200μA | 1.8MHz | 90% |
| CXSD6144C | Built-in MOSFET Synchronous | PWM/PFM | 4.5~24V | ADJ | 50μA | 500KHz | 94% |
| CXSD6145B | Built-in MOSFET Synchronous | PWM | 5~20V | 0.923~15V ADJ | 60μA | 360KHz | 94% |
