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MAX16129UAEBD+T

Description
supervisory circuits load-dump/reverse-V protection circuit
Categorysemiconductor    Other integrated circuit (IC)   
File Size834KB,15 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Environmental Compliance  
Download Datasheet Parametric View All

MAX16129UAEBD+T Overview

supervisory circuits load-dump/reverse-V protection circuit

MAX16129UAEBD+T Parametric

Parameter NameAttribute value
ManufactureMaxim Integrated
Product CategorySupervisory Circuits
RoHSYes
Number of Inputs Monitored1 Inpu
Manual ReseNo Manual Rese
WatchdogNo Watchdog
Battery Backup SwitchingNo Backu
Supply Voltage - Max30 V
Maximum Operating Temperature+ 125 C
Mounting StyleSMD/SMT
Package / CaseuMAX-8
Chip Enable SignalsNo Chip Enable
Development KiMAX16129EVKIT#
Maximum Power Dissipati1030.9 mW
Minimum Operating Temperature- 40 C
Operating Supply Curre260 uA
Overvoltage Threshold15 V
PackagingReel
Power Fail DetectiN
Factory Pack Quantity2500
Supply Voltage - Mi3 V
TypeVoltage Supervisory
Undervoltage Threshold8.13 V
MAX16128/MAX16129
Load-Dump/Reverse-Voltage Protection Circuits
General Description
The MAX16128/MAX16129 load-dump/reverse-voltage
protection circuits protect power supplies from damaging
input-voltage conditions, including overvoltage, reverse-
voltage, and high-voltage transient pulses. Using a
built-in charge pump, the devices control two external
back-to-back n-channel MOSFETs that turn off and isolate
downstream power supplies during damaging input
conditions, such as an automotive load-dump pulse or a
reverse-battery condition. Operation is guaranteed down
to 3V that ensures proper operation during automotive
cold-crank conditions. These devices feature a flag output
(FLAG) that asserts during fault conditions.
For reverse-voltage protection, external back-to-back
MOSFETs outperform the traditional reverse-battery
diode, minimizing the voltage drop and power dissipation
during normal operation.
The devices use fixed overvoltage and undervoltage
thresholds, minimizing the external component count.
The MAX16129 provides limiter-mode fault management
for overvoltage and thermal-shutdown conditions; whereas
the MAX16128 provides switch-mode fault management
for overvoltage and thermal shutdown conditions. In the
limiter mode, the output voltage is limited and
FLAG
is
asserted low during a fault. In the switch mode, the
external MOSFETs are switched off and
FLAG
is asserted
low after a fault. The switch mode is available in four
options—Latch mode, 1 Autoretry mode, 3 Autoretry
mode, and Always autoretry mode.
The MAX16128/MAX16129 are available in an 8-pin
µMAX
®
package and operate over the automotive
temperature range (-40°C to +125°C).
Increases Protection of Sensitive Electronic
Components in Harsh Environments
• -36V to +90V Wide Input-Voltage Protection Range
• Fast Gate Shutoff During Fault Conditions with
Complete Load Isolation
• Thermal Shutdown Protection
• FLAG
Output Identifies Fault Condition
Automotive Qualified
• Operates Down to +3V, Riding Out Cold-Crank
Conditions
• -40°C to +125°C Operating Temperature Range
Integration Reduces Solution Size
• Internal Charge-Pump Circuit Enhances External
n-Channel MOSFET
• Fixed Undervoltage/Overvoltage Thresholds
• 3mm × 3mm, 8-Pin µMAX Package
Reduced Power Dissipation Compared to Discrete
Solutions
• Minimal Operating Voltage Drop for Reverse-
Voltage Protection
• 380µA Supply Current and 100µA Shutdown
Current at 30V Input
Benefits and Features
Ordering Information
appears at end of data sheet.
Applications
Automotive
Industrial
Avionics
Telecom/Server/Networking
µ
MAX is a registered trademark of Maxim Integrated Products, Inc.
19-6146; Rev 5; 2/17
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