The JTMH7401A is a complete, cost effective,highly-efficient power management solution that is ideal for a wide range of portable handheld equipment. This device integrates a compact, high efficiency,

一,产品概述(General Description)      

   The JTMH7401A is a complete, cost effective,highly-efficient power management solution
that is ideal for a wide range of portable handheld equipment. This device integrates a
compact, high efficiency, and low voltage step-up DC/DC converter and one power switch.
VOUT1 is a compact, high efficiency, and low voltage step-up DC/DC converter including an
error amplifier, ramp generator, comparator,switch pass element and driver in which providing
a stable and high efficient operation over a wide range of load currents. It operates in stable
waveforms without external compensation.
VOUT2 is an integrated 200mΩ power switch for self-powered and bus-powered Universal Series
Bus (USB) applications. The protection functions include current limiting at 1.4A (VIN=3.6V) to meet
USB power requirement, and thermal shutdown to protect damage under over current condition.
二.产品特点(Features)

Low Quiescent Current: 230μA
Wide Input Voltage Range: 2V to 5V
VOUT1 Range: 3V to 5.5V
VOUT2: 1.4A Current Limit (VIN=3.6V)
Efficiency up to 87%
MSOP-10L Package
三,应用范围 (Applications)

Ø Battery-Powered Equipment
Ø Motherboard USB Power Switch
Ø Hot-Plug Power Supplies
Ø Battery-Charger Circuits
Ø USB Device Power Switch
Ø Portable Instrument
Ø PDA
Ø DSC
Ø LCD Panel
Ø Wireless Equipment
四.技术</span>规格书下载（产品PDF）</span>

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JTMH7401A

五,产品封装图 (Package)


六.电路原理图</span>



七</span>,功能概述

Supply Voltage……… …………… …………… …………… …………… ……….…&#8722; 0.3V ～ 6V
SW Pin Switch Voltage……………………………………………………………………&#8722;0.3V ～ 28V
Other I/O Pin Voltages … … … … … … … … … … … … … … … … … … … … … … … − 0.3V ～ 6V
SW Pin Switch Current ……………………………………………………………...………………..3A
Operating Conditions………………………………………………………………………-40℃ ～ +85℃</span>
Operating Junction Temperature…………………………………..……………………-40℃ ～ +125℃</span>
Storage Temperature Range ………………………………………………………….−65℃ ～ +150℃</span>
Lead Temperature……………………………………………………………………………………+265℃</span>
八,相关芯片选择指南

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