The JTMH1001 is high efficiency synchronous,PWM step-down DC

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 JTMH1001 is high efficiency synchronous,PWM step-down DC/DC converters working under an input voltage range from 2.2V to 5.5V.
This feature makes the JTMH1001 suitable for single Li-Lon battery-powered applications. 100% duty cycle capability extends battery life in portable
devices, while the quiescent current is 200μA with no load, and drops to <1μA
in shutdown.
The internal synchronous switch is desired to increase efficiency without an external Schottky diode. The 1.0MHz/1.4MHz switching frequency allows the
using of tiny, low profile inductors and ceramic capacitors, which minimized
overall solution footprint.
The JTMH1001 converters are available in the industry standard TSOT/
SOT-23-5L 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
700mA Output Current
Low Quiescent Current: 200μA
Output Voltage: 0.6V ～ 5.5V
Automatic PWM/PFM Mode Switching
No Schottky Diode Required
Frequency Operation: 1.0MHz for Fixed
Output Voltage and 1.4MHz for Adjustable
Output Voltage
Short-Circuit Protection
Shutdown Quiescent Current: <1μA
Low Profile TSOT/ SOT-23-5L 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
Portable media players
PC cards
四.技术规格书下载（产品PDF）

JTMH1001

五,产品封装图 (Package)

六.电路原理图

七,功能概述

Power Dissipation………………………………………………………………………Internally Iimited
Input Voltage…………………………………………………………………………………..-0.3V ～ +6V
Output Voltage……………………………………………………………………….…….....-0.3V ～ +6V
EN,SW Pin Voltage……………………..………………..……………………...……-0.3V ～ (VIN+0.3)V
SW Pin Current….………………………………………………………………...……………………..1.3A
Operating Temperature Range(Note 2) ………………………………………………...-40℃ ～ +85℃
Junction Temperature ………………………………………………………...…………-40℃ ～ +125℃
Storage Temperature Range ………………………………………………………….-65℃ ～ +150℃
Lead Temperature (Soldering,10 sec.) ………………………………………..…………………..+265℃
八,相关芯片选择指南

JTMH1002

JTMH1039A

JTMH1001

JTMH1006

JTMH1223A

JTMH1223

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