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General Description
The MAX4370 is a circuit-breaker IC designed to offer
protection in hot-swap applications using Maxims
DualSpeed/BiLevel" detection. This controller,
designed to reside either on the backplane or on the
removable card, is used to protect a system from start-
up damage when a card or board is inserted into a rack
with the main system power supply turned on. The
cards discharged filter capacitors provide a low
impedance that can momentarily cause the main power
supply to collapse. The MAX4370 prevents this start-up
condition by providing inrush current regulation during
a programmable start-up period, allowing the system to
stabilize safely. In addition, two on-chip comparators
provide DualSpeed/BiLevel short-circuit protection and
overcurrent protection during normal operation.
The MAX4370 provides protection for a +3V to +12V
single supply. An internal charge pump generates the
controlled gate drive for an external N-channel MOS  -
FET power switch. The MAX4370 latches the switch off
after a fault condition until an external reset signal
clears the device. Other features include a status pin to
indicate a fault condition, an adjustable overcurrent
response time, and a power-on reset comparator.
The MAX4370 is specified for the extended-industrial
temperature range (-40癈 to +85癈) and is available in
an 8-pin SO package.
Applications
Hot Board Insertion
Solid-State Circuit Breaker
Features
o DualSpeed/BiLevel Protection During Normal
Operation
o Inrush Current Regulated at Start-Up
o Resides Either on the Backplane or on the
Removable Card
o Programmable Start-Up Period and Response
Time
o Allows Safe Board Insertion and Removal from
Live Backplane
o Protection for +3V to +12V Single Supplies
o Latched Off After Fault Condition
o Status Output Pin
o Internal Charge Pump Generates Gate Drive for
External N-Channel MOSFET
Current-Regulating Hot-Swap Controller with
DualSpeed/BiLevel Fault Protection
________________________________________________________________ Maxim Integrated Products   1
N
M1
MAX4370
V
OUT
C
BOARD
CTIM
C
TIM
CSPD
C
SPD
ON
ON
GND
STAT
V
CC
R
SENSE
STAT
REMOVABLE CARD
BACKPLANE
V
IN
VSEN
GATE
GND
Typical Operating Circuit
19-1472; Rev 0; 4/99
PART
MAX4370ESA
-40癈 to +85癈
TEMP. RANGE
PIN-PACKAGE
8 SO
Ordering Information
DualSpeed/BiLevel is a trademark of Maxim Integrated Products.
Pin Configuration appears at end of data sheet.
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相关代理商/技术参数
MAX4370ESA-T 功能描述:热插拔功率分布 RoHS:否 制造商:Texas Instruments 产品:Controllers & Switches 电流限制: 电源电压-最大:7 V 电源电压-最小:- 0.3 V 工作温度范围: 功率耗散: 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Tube
MAX4372FEBT 制造商:Maxim Integrated Products 功能描述:UCSP/SOT23, MICROPOWER, HIGH-SIDE CURRENT-SENSE AMP - Rail/Tube
MAX4372FEBT+ 制造商:Maxim Integrated Products 功能描述:- Rail/Tube
MAX4372FEBT+T 功能描述:特殊用途放大器 uPower High-Side Current-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比(最小值): 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel
MAX4372FEBT+TG45 功能描述:特殊用途放大器 Low-Cost UCSP/SOT23 Micropower High-Side Current-Sense Amplifier with Voltage Output RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比(最小值): 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel
MAX4372FEBT-T 功能描述:特殊用途放大器 RoHS:否 制造商:Texas Instruments 通道数量:Single 共模抑制比(最小值): 输入补偿电压: 工作电源电压:3 V to 5.5 V 电源电流:5 mA 最大功率耗散: 最大工作温度:+ 70 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:QFN-20 封装:Reel
MAX4372FESA 功能描述:电流灵敏放大器 uPower High-Side Current-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比(最小值):110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel
MAX4372FESA+ 功能描述:电流灵敏放大器 uPower High-Side Current-Sense Amp RoHS:否 制造商:Texas Instruments 通道数量: 共模抑制比(最小值):110 dB 输入补偿电压:80 uV 电源电压-最大:5.5 V 电源电压-最小:2.7 V 电源电流:350 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-16 封装:Reel