Relay Driver IC Operates with Vin from 2 to 42-Vdc

There has been a recent focus on measures for operation at low input voltages in order to avoid devices being unable to function correctly as a result of drops in battery voltage which occur when an automobile restarts from a cold cranking or idling stop.

The newly-developed MF2001SF from Shindengen Electric claims an industry best low input voltage of 2V and is compatible with the LV124 cold cranking conditions (battery voltage drop to 3.2V) established by German automobile manufacturers, allowing devices to operate correctly even when battery voltage drops. These high-side switches are expected to find use in automotive applications such as relay drive circuits.

The device is also a high side drive control IPD with built-in P-channel high withstand voltage power MOSFET that is also compatible with wide input voltage range of 2- to 42-Vdc developed using Shindengen's proprietary technologies.

Specifications include: Input voltage range from 2- to 42-Vdc; Standby current (dark current) of 20 μA typical; Drive signal 2 wire (Latch model: Enables maintenance of output even when output from the microcontroller etc. stops); Output p-channel MOSFET current rated for 1 A maximum; Output MOSFET ON resistance is 330mΩ typical; Built-in protection functions include, Overcurrent protection and thermal protection; Maximum operating junction temperature is 150 degrees C; and these devices have automatic recovery after a short circuit condition has been removed.