MAX4919B - Maxim Integrated

MAX4919B Battery Power-Up Logic

The MAX4919B/MAX4920B/MAX4921B overvoltage protection controllers protect low-voltage systems against high-voltage faults up to +28V. An internal 1.8A (min) pFET with low RON (100mΩ) switches a battery to the load and also protects the battery against short-circuit faults. When a short circuit occurs, the current through the internal pFET is limited for a bl.

Features

o Input Overvoltage Protection Up to +28V o Preset Overvoltage Protection Trip Level 6.38V (MAX4919B) 5.80V (MAX4920B) 4.65V (MAX4921B) o Adapter/Car-Kit Auto-Selector o Low-Current Undervoltage Lockout Mode o Internal 1.8A (min) Battery Switchover FET o Integrated Low-Battery Detect o Battery Short-Circuit Protection o Low-Cost External nMOS Overvoltage FET o 14-Pin TDFN Package (3mm x 3mm) Pin Configuration TOP VIEW 14 13 12 11 10 9 8 MAX4919B MAX4920B MAX4921B +
*EP 1234567 GP1 IN GN1 BTI BTI HP_PWR PWR_ON TDFN (3mm x 3mm)
*EXPOSED PADDLE +DENOTES LEAD-FREE PACKAGE Ordering Information/S.