MAX16914AUB+ by Analog Devices

Ideal Diode, Reverse-Battery, and Overvoltage Protection Switch/Limiter Controllers with External MOSFETs


The MAX16914/MAX16915 low-quiescent-current overvoltage and reverse-battery protection controllers are designed for automotive and industrial systems that must tolerate high-voltage transient and fault conditions. These conditions include load dumps, voltage dips, and reversed input voltages. The controllers monitor the input voltage on the supply line and control two external pFETs to isolate the load from the fault condition. The external pFETs are turned on when the input supply exceeds 4.5V and stay on up to the programmed overvoltage threshold. During high-voltage fault conditions, the controllers regulate the output voltage to the set upper threshold voltage (MAX16915), or switch to high resistance (MAX16914) for the duration of the overvoltage transient to prevent damage to the downstream circuitry. The overvoltage event is indicated through an active-low, open-drain output, active-low OV. The reverse-battery pFET behaves as an ideal diode, minimizing the voltage drop when forward biased. Under reverse bias conditions, the pFET is turned off, preventing a downstream tank capacitor from being discharged into the source. Shutdown control turns off the IC completely, disconnecting the input from the output and disconnecting TERM from its external resistor-divider to reduce the quiescent current to a minimum. Both devices are available in a 10-pin µMAX® package, and operate over the automotive -40°C to +125°C temperature range.

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Prices starting from US$1.53

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Features

Architecture Replaces Protection Diodes Reducing the Forward Voltage, Allowing Operation During Cold-Crank Conditions Transient Voltage Protection Up to +44V and -75V Low-Voltage Drop when Used with Properly Sized External pFETs 4.5V to 19V Input-Voltage Operation
Transient Voltage Protection Up to +44V and -75V
Low-Voltage Drop when Used with Properly Sized External pFETs
4.5V to 19V Input-Voltage Operation
Ideal Diode Reverse-Battery Protection Supports Down to -75V to Protect System During Negative-Voltage Transients Back-Charge Prevention Avoids Discharging Downstream Tank Capacitance
Back-Charge Prevention Avoids Discharging Downstream Tank Capacitance
Overvoltage Protection Enables System to Survive Up to a +44V Load Dump Overvoltage Indicator Thermal-Overload Protection
Overvoltage Indicator
Thermal-Overload Protection
Low Operating Current Meets Stringent Module Specifications While Maintaining System Protection 29µA Low Operating Current 6µA Low Shutdown Current
29µA Low Operating Current
6µA Low Shutdown Current

Specifications

# Channels 1
VIN (V) (min) 4.5
VIN (V) (max) 19
Over Voltage Trip Level (V) Adjustable (1.2V)
Under Voltage Lockout (V) 4.35
VGATE (V) 7.5
Over Volt. Flag Open-Drain
tGATE (On) (ms) 0.02
tGATE (Off) (µs) 3
Package/Pins UMAX/10
BudgetaryPrice (See Notes) 1.11


MAX16914AUB+ - Integrated Circuits by Analog Devices

REVERSE BATTERY PROTECTION CTRL UMAX-10

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

Specifications

IC Function Overvoltage & Reverse Battery Protection Controller
Supply Voltage Min 4.5V
Supply Voltage Max 19V
IC Package Type µMAX
No. of Pins 10Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant To Be Advised
MSL MSL 1 - Unlimited
SVHC No SVHC (15-Jan-2018)

Alternative Descriptions

Ideal Diode, Reverse-Battery, | Analog Devices
Reverse Battery Protection Ctrl, Umax-10 | Newark Electronics
REVERSE BATTERY PROTECTION CTRL, UMAX-10 | element14

Frequently Asked Questions

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Is the MAX16914AUB+ RoHS compliant?

This part has not been flagged as RoHS Compliant.

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Authorised distributors including Analog Devices, Newark Electronics, element14 and Farnell have stock available or on a lead time for MAX16914AUB+ .

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