MAX16129UAAGA+ by Analog Devices

Load-Dump/Reverse-Voltage Protection Circuits


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 (active-low 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 active-low FLAG is asserted low during a fault. In the switch mode, the external MOSFETs are switched off and active-low 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).

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Prices starting from US$0.57

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Newark Electronics
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Features

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 Active-Low FLAG Output Identifies Fault Condition
-36V to +90V Wide Input-Voltage Protection Range
Fast Gate Shutoff During Fault Conditions with Complete Load Isolation
Thermal Shutdown Protection
Active-Low FLAG Output Identifies Fault Condition
Automotive Qualified Operates Down to +3V, Riding Out Cold-Crank Conditions -40°C to +125°C Operating Temperature Range
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
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
Minimal Operating Voltage Drop for Reverse-Voltage Protection
380µA Supply Current and 100µA Shutdown Current at 30V Input

Specifications

# Channels 1
VIN (V) (min) 3
VIN (V) (max) 90
Over Voltage Trip Level (V) Adjustable
Under Voltage Lockout (V) Adjustable
VGATE (V) 9
Over Volt. Flag Open-Drain
Oper. Temp. (°C) -40 to +125
Package/Pins UMAX/8
BudgetaryPrice (See Notes) 1.51


MAX16129UAAGA+ - Integrated Circuits by Analog Devices

LOAD DUMP/REV VOLT PROTECTION CKT UMAX8

Status: Unknown
Series: -
RoHS: Unknown
Download Datasheet Visit Manufacturer Site View Pricing & Stock

Specifications

Threshold Voltage -
No. of Supervisors / Monitors 1Monitors
Supply Voltage Min 3V
Supply Voltage Max 30V
Reset Type Internal
Digital IC Case µMAX
No. of Pins 8Pins
Delay Time 21µs
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)
IC Function Overvoltage Undervoltage and Reverse Supply Protection Controller
IC Package Type µMAX

Alternative Descriptions

LOAD DUMP/REV VOLT PROTECTION CKT, UMAX8 | element14
Load Dump/Rev Volt Protection Ckt, Umax8 | Newark Electronics

Frequently Asked Questions

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Is the MAX16129UAAGA+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including element14, Farnell and Newark Electronics have stock available or on a lead time for MAX16129UAAGA+ .

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