The CXSD6139 can provide up to 3A of load current with output voltage as low as 0.8V. It can operate at 100 duty cycle for low dropout application.With its peak current mode control and outside com
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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 CXSD6139 is a synchronous, 1.4MHz, fix frequency PWM Buck converter.
It is ideal for powering portable equipment that powered by a single cell
Lithium-ion batter, or USB port.
The CXSD6139 can provide up to 3A of load current with output voltage
as low as 0.8V. It can operate at 100% duty cycle for low dropout application.
With its peak current mode control and outside compensation, the CXSD6139
is stable with ceramic capacitors and small inductors.
CXSD6139 comprises a cycle-by-cycle current limit and thermal shutdown
to protect itself from fault application.
CXSD6139 is available in DFN 3x3 -10 package.
二.产品特点(Features)
Adjustable Output Voltage, 0.8 - Vin
High efficiency, up to 96%
Output voltage accuracy 2%
0.1ohm Rdson of internal MOSFET
3A maximum output current
Up to 1.5MHz fix switching frequency
5.5V maximum operation voltage
Short circuit protection
Thermal shutdown protection
10mV Load regulation at 3A load
Compatible with ceramic output capacitor
Excellent load transient performance
In-rush current suppression
Reverse current suppression for light load
Available in DFN3x3-10 package
三,应用范围 (Applications)
3G network modem
Smart phone, PDA
Digital camera
LCDTV
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)
六.电路原理图
七,功能概述
Supply Input Voltage, VDD, PVDD -------------------------------------------------------------------------- -0.3V to 6V
LX Pin Switch Voltage -------------------------------------------------------------------------- -0.3V to (PVDD + 0.3V)
Other I/O Pin Voltages ---------------------------------------------------------------------------- -0.3V to (VDD + 0.3V)
LX Pin Switch Current ---------------------------------------------------------------------------------------------------- 3.5A
Power Dissipation, PD @ TA = 25°C ,DFN-10L 3x3 ----------------------------------------------------------- 900mW
Package Thermal Resistance,DFN-10L3x3, θJA ------------------------------------------------------------- 110°C/W
Junction Temperature --------------------------------------------------------------------------------------------------- 150°C
Lead Temperature (Soldering, 10 sec.) ----------------------------------------------------------------------------- 260°C
Storage Temperature Range ----------------------------------------------------------------------------- -65°C to 150°C
ESD HBM (Human Body Mode) ----------------------------------------------------------------------------------------- 2k
八,相关芯片选择指南
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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 |
2.6~7V |
ADJ |
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