目录lDb嘉泰姆

1.产品概述                       2.产品特点lDb嘉泰姆
3.应用范围                       4.下载产品资料PDF文档 lDb嘉泰姆
5.产品封装图                     6.电路原理图                   lDb嘉泰姆
7.功能概述                        8.相关产品lDb嘉泰姆

 lDb嘉泰姆

一,产品概述(General Description)         lDb嘉泰姆
   CXSU63039 is a high efficiency synchronous boost regulator that convertslDb嘉泰姆

down to 2.5V input and up to 5.5V output voltage. It adopts NMOS for thelDb嘉泰姆

main switch and PMOS for the synchronous switch. It can disconnect the lDb嘉泰姆

output from input during the shutdown mode..lDb嘉泰姆

  It integrates 5A power MOSFET and can output 5V 2.5A with Li-Battery input.lDb嘉泰姆
二.产品特点(Features)lDb嘉泰姆
1.)2.5V Minimum input voltagelDb嘉泰姆
2.)Adjustable output voltage from 3V to 5.5VlDb嘉泰姆
3.)6A peak current limitlDb嘉泰姆
4.)Input under voltage lockoutlDb嘉泰姆
5.)600Khz fixed Switching FrequencylDb嘉泰姆
6.)Load disconnect during shutdownlDb嘉泰姆
7.)Integrated soft-startlDb嘉泰姆
8.)Output over voltage protectionlDb嘉泰姆
30moJTM Power MOSFETlDb嘉泰姆
Thermal ShutdownlDb嘉泰姆
QFN4x4-16 PackagelDb嘉泰姆
三,应用范围 (Applications)lDb嘉泰姆
1.) Handheld DeviceslDb嘉泰姆
2.)Power BanklDb嘉泰姆
3.)All Single Cell Li or Dual Cell Battery Operated ProductslDb嘉泰姆
四,产品封装图 (Package)lDb嘉泰姆
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五,电路原理图lDb嘉泰姆
lDb嘉泰姆
lDb嘉泰姆
lDb嘉泰姆
六.产品PDF文档lDb嘉泰姆

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！lDb嘉泰姆

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七,功能概述lDb嘉泰姆

SYNCHRONOUS RECTIFIERlDb嘉泰姆
The device integrates an N-channel and a P-channel MOSFET transistor to realize alDb嘉泰姆
synchronous rectifier. Because the commonly used discrete Schottky rectifier is replaced withlDb嘉泰姆
a low RDS(ON) PMOS switch, the power conversion efficiency reaches 96%. To avoidlDb嘉泰姆
ground shift due to the high currents in the NMOS switch, two separate ground pins are used.lDb嘉泰姆
The reference for all control functions is the GND pin. The source of the NMOS switch islDb嘉泰姆
connected to PGND. Both grounds must be connected on the PCB at only one point close tolDb嘉泰姆
the GND pin. A special circuit is applied to disconnect the load from the input duringlDb嘉泰姆
shutdown of the converter. In conventional synchronous rectifier circuits, the backgate diodelDb嘉泰姆
of the high-side PMOS is forward biased in shutdown and allows current flowing from thelDb嘉泰姆
battery to the output. This device however uses a special circuit which takes the cathode oflDb嘉泰姆
the backgate diode of the high-side PMOS and disconnects it from the source when thelDb嘉泰姆
regulator is not enabled (EN = low).lDb嘉泰姆
The benefit of this feature for the system design engineer is that the battery is not depletedlDb嘉泰姆
during shutdown of the converter. No additional components have to be added to the designlDb嘉泰姆
to make sure that the battery is disconnected from the output of the converter.lDb嘉泰姆
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