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参数资料
| 型号： | MAX6397MATA-T |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Overvoltage Protection Switch/Limiter Controllers Operate Up to 72V |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, DSO8 |
| 封装： | 3 X 3 MM, 0.80 MM HEIGHT, MO-229WEEC, TDFN-8 |
| 文件页数： | 1/18页 |
| 文件大小： | 299K |
| 代理商： | MAX6397MATA-T |
General Description
The MAX6397/MAX6398 are small, high-voltage overvolt-
age protection circuits. These devices disconnect the
output load or limit the output voltage during an input
overvoltage condition. These devices are ideal for appli-
cations that must survive high-voltage transients such as
those found in automotive and industrial applications.
The MAX6397/MAX6398 monitor the input or output
voltages and control an external n-channel MOSFET to
isolate or limit the load from overvoltage transient energy.
When the monitored input voltage is below the user-
adjustable overvoltage threshold, the external n-channel
MOSFET is turned on by the GATE output. In this mode,
the internal charge pump fully enhances the n-channel
MOSFET with a 10V gate-to-source voltage.
When the input voltage exceeds the overvoltage thresh-
old, the protection can disconnect the load from the
input by quickly forcing the GATE output low. In some
applications, disconnecting the output from the load is
not desirable. In these cases, the protection circuit can
be configured to act as a voltage limiter where the
GATE output sawtooths to limit the voltage to the load.
The MAX6397 also offers an always-on linear regulator
that is capable of delivering up to 100mA of output
current. This high-voltage linear regulator consumes
only 37A of quiescent current.
The regulator is offered with output options of 5V, 3.3V,
2.5V, or 1.8V. An open-drain, power-good output (POK)
asserts when the regulator output falls below 92.5% or
87.5% of its nominal voltage.
The MAX6397/MAX6398 include internal thermal-shut-
down protection, disabling the external MOSFET and
linear regulator if the chip reaches overtemperature
conditions. The devices operate over a wide 5.5V to
72V supply voltage range, are available in small TDFN
packages, and are fully specified from -40°C to
+125°C.
Applications
Automotive
Industrial
FireWire
Notebook Computers
Wall Cube Power Devices
Features
o 5.5V to 72V Wide Supply Voltage Range
o Overvoltage Protection Controllers Allow User to
Size External n-Channel MOSFETs
o Internal Charge-Pump Circuit Ensures MOSFET
Gate-to-Source Enhancement for Low RDS(ON)
Performance
o Disconnect or Limit Output from Input During
Overvoltage Conditions
o Adjustable Overvoltage Threshold
o Thermal-Shutdown Protection
o Always-On, Low-Current (37A) Linear Regulator
Sources Up to 100mA (MAX6397)
o Fully Specified from -40°C to +125°C (TJ)
o Small, Thermally Enhanced 3mm x 3mm TDFN
Package
MAX6397/MAX6398
Overvoltage Protection Switch/Limiter
Controllers Operate Up to 72V
________________________________________________________________
Maxim Integrated Products
1
MAX6397
8
REG
6
GATE
7
OUT
5
GND
3
SHDN
2
1
IN
TDFN
TOP VIEW
*EP
4
POK
SET
*EXPOSED PAD. CONNECT TO GND.
Pin Configurations
Ordering Information
19-3668; Rev 5; 1/09
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
*
Replace “-T” with “+T” for lead(Pb)-free/RoHS-compliant packages.
**
EP = Exposed pad.
The MAX6397 linear regulator is offered in four output voltage
options and a choice of a 92.5% or 87.5% POK threshold
assertions. See the Selector Guide.
PART
TEMP RANGE
PIN-PACKAGE
MAX6397_ATA-T*
-40°C to +125°C
8 TDFN-EP**
MAX6398ATT-T*
-40°C to +125°C
6 TDFN-EP**
Selector Guide and Typical Operating Circuit appear at end
of data sheet.
Pin Configurations continued at end of data sheet.
FireWire is a registered trademark of Apple Computer, Inc.
EVALUATION
KIT
AVAILABLE
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6397SATA | 制造商:Maxim Integrated Products 功能描述:OVERVOLTAGE PROTECTION SWITCH/LIMIT - Rail/Tube |
| MAX6397SATA+ | 制造商:Maxim Integrated Products 功能描述:VOLT SUPERVISOR CNTRLR 1.215V 8TDFN EP - Rail/Tube |
| MAX6397SATA+T | 功能描述:监控电路 Over Volt Protection Switch/Limiter RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6397SATA-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6397TATA | 制造商:Maxim Integrated Products 功能描述:OVERVOLTAGE PROTECTION SWITCH/LIMIT - Rail/Tube |
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