The JTM6291 is a current mode boost DC-DC converter. Its PWM

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 JTM6291 is a current mode boost DC-DC converter. Its PWM circuitry with built-in
0.2Ω power MOSFET make this regulator highly power efficient. The internal compensat-
ion network also minimizes as much as 6 external component counts. The non-inverting
input of error amplifier connects to a 0.6V precision reference voltage and internal soft
-start function can reduce the inrush current.
       The JTM6291 is available in the SOT23-6L package and provides space-saving PCB
for the application fields.

二.产品特点(Features)
Adjustable Output up to 12V
Internal Fixed PWM frequency: 1.2MHz
Precision Feedback Reference Voltage: 0.6V (±2%)
Internal 0.2Ω, 2A, 18V Power MOSFET
Shutdown Current: 0.1μA
Over Temperature Protection
Adjustable Over Current Protection: 0.5A ~ 2.5A
Package: SOT23-6L

三,应用范围 (Applications)
Chargers
LCD Displays
Digital Cameras
Handheld Devices
Portable Products

四.下载产品资料PDF文档

JTM6291

五,产品封装图 (Package)

六.电路原理图

七,功能概述
Operation
The JTM6291 is a current mode boost converter. The constant switching frequency is
1MHz and operates with pulse width modulation (PWM). Build-in 18V / 2A MOSFET
provides a high output voltage. The control loop architecture is peak current mode control;
therefore slope compensation circuit is added to the current signal to allow stable
operation for duty cycles larger than 50%.
Soft Start Function (责任编辑：oumao18)