New automotive protection controller with external MOSFETs from Maxim

Maxim has introduced the MAX16914/MAX16915, a new automotive protection controller that uses back-to-back pFETs to provide overvoltage and reverse-battery protection with minimal forward-voltage drop. The MAX16914/MAX16915 controllers are suitable for automotive and industrial applications.

The controllers monitor the input voltage on the supply line and control two external pFETs to isolate the load from the fault condition. During reverse-battery fault conditions, the two pFETs are turned off to prevent reverse current flow.

The key features of the two new protection controllers are,

Operating input voltage ranges from 4.5V to 19V
Transient voltage protection up to +44V and -75V
Adjustable overvoltage limit with resistor-divider shut off in shutdown
Ideal diode reverse-battery protection
Low voltage drop when used with properly sized external pFETs
Back-charge prevention
Overvoltage indicator
Shutdown input
6µA of low shutdown current
Thermal-overload protection
AEC-Q100 qualified

The MAX16914/MAX16915 operate from only 30µA of quiescent current. The overvoltage threshold is resistor adjustable and uses an indicator flag to alert the system to an overvoltage event. The devices also include over temperature-protection circuitry that turns off both external MOSFETs to protect the system.

The MAX16914 functions as an overvoltage switch and disconnects the input and output during overvoltage events, while the MAX16915 operates as a limiter that regulates the output to the set upper threshold.

Operating temperature range: -40°C to +125°C

Package: Thermally enhanced, 10-pin µMAX package
Price: Starts at $1.60 for 1k pieces
Availability: Now

For more details visit www.maxim-ic.com