CXSD6140 will automatically switch between PFM and PWM mode based on the load current, thus to enhance the converter efficiency at light load
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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 CXSD6140 is a high efficiency current-mode asynchronous, 24V/1.2A buck converter.
Its input voltage ranges from 4V to 24V and it provides an adjustable regulated
output voltage from 0.810V to 5.5V while delivering up to 1.2A of output current.
The switching frequency is set to 1.4MHz, which works with a inductor as small
as 4.7uH.And the CXSD6140 will automatically switch between PFM and PWM mode
based on the load current,thus to enhance the converter efficiency at light load.
CXSD6140 consists of many protection blocks such as UVLO, input voltage over
voltage protection to stand much higher input voltage spike, thermal protection and
output short circuit protection.
The CXSD6140 is available in the tiny SOT23-6 package.
二.产品特点(Features)
Adjustable Output Voltage, Vfb=0.810V
Output current is up to 1.2A
Range of operation input voltage: 4-24V
Input voltage UVLO: 3.7V (voltage decreasing)
Input Overvoltage Protection @26V
Withstand input voltage spike >30V
Operating current at zero load: 0.8mA (typ.)
Line regulation: 0.1%/V (typ.)
Load regulation: 10mV (typ.)
High efficiency, up to 90%
Environment Temperature: -20°C~85°C
三,应用范围 (Applications)
Security Camera
Consumer Electronic Device for automobile
Portable DVD
ADSL Modem, WLAN router
Other 12V or double cell Li-ion battery
powered 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)
六.电路原理图
七,功能概述
Package Thermal Resistance
|
Parameter |
Value |
|
|
Max Input Voltage |
30V |
|
|
Max Operating Junction Temperature(Tj) |
125°C |
|
|
Ambient Temperature(Ta) |
-20°C – 85°C |
|
|
Package Thermal Resistance |
SOT23-6 (qJC) |
110°C / W |
|
SOT23-6 (qJA) |
220°C / W |
|
|
Storage Temperature(Ts) |
-40°C - 150°C |
|
|
Lead Temperature & Time |
260°C, 10S |
|
|
ESD (HBM) |
>2000V |
|
八,相关芯片选择指南
|
降压型DC/DC转换器(DC/DC Step-down Converter) |
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|
Part No. |
Power switching |
MODE |
VIN |
VOUT |
IQ |
FOSC |
Eff. |
|
Built-in MOSFETSynchronous |
PWM/PFM |
Max 7V |
ADJ |
35μA |
1.5MHz |
96% |
|
|
Built-in MOSFETSynchronous |
PWM/PFM |
2.6~6V |
ADJ |
40μA |
1.5MHz |
96% |
|
|
Built-in MOSFET Synchronous |
PWM/PFM |
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