The JTM5201 is high efficiency synchronous, dual PWM step-do

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

一,产品概述(General Description)
      The JTM5201 is high efficiency synchronous, dual PWM step-down DC/DC converters working under an input voltage range of 2.5V to 5.5V. This feature makes the JTM5201 suitable for single Li-Lon battery-powered applications. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 200 A with
no load, and drops to < 1 A in shutdown.
    The internal synchronous switch is desired to increase efficiency without an external Schottky diode. The 1.4 MHz fixed switching frequency allows the using of tiny, low profile inductors and ceramic capacitors, which minimized overall solution footprint.
     The JTM5201 converters are available in the industry standard DFN3*3-10L power packages(or upon request).

二.产品特点(Features)

Up to 95% Efficiency
Current mode operation for excellent line and
load transient response
Low quiescent current: 460 A
Low Switch on Resistance RDS(ON), Internal
Switch: 0.35
Output voltage 0.6V 5.5V
Automatic PWM/PFM mode switching
No Schottky diode required
1.4MHz fixed frequency switching
Short-Circuit protection
Shutdown quiescent current: < 1 A
Low profile DFN3*3-10L package (lead-free
packaging is now available)

三,应用范围 (Applications)
Digital cameras and MP3
Palmtop computers / PDAs
Cellular phones
Wireless handsets and DSL modems
PC cards
Portable media players

四,产品封装图 (Package)

PIN NUMBER DFN3*3-10L	PIN NAME	FUNCTION
1	EN1	ON/OFF Control 1 (High Enable)
2	FB1	Output feedback 1
3	VIN2	Input 2
4	GND	Ground
5	SW2	Switch Output 2
6	EN2	ON/OFF Control 2 (High Enable)
7	FB2	Output feedback 2
8	VIN1	Input 1
9	GND	Ground
10	SW1	Switch Output 1

(责任编辑：oumao18)