Description

The SC1437 is a battery over voltage detection circuit with driver for external MOSFET. The trip point is adjustable with an external resistor divider connected to the SENSE pin. The trip point is preset to a nominal trip voltage of 4.2V if no external divider is used. Other internal trip voltages of 4.5V and 4.7V are available, specified by different part numbers. An internal delay, with two selectable times or bypass, is on-board to suppress accidental over voltage conditions due to glitches on the battery supply voltage, V+.

Features

◆ Low quiescent current, less than 10µA typical

◆ Input voltage range 1.8V to 6.8V

◆ Adjustable or preset voltage trip point

◆ Selectable timer delays of 0, 40 and 80ms without use of external resistor

◆ SOT-23 5 lead package

◆ Accuracy is 2 over specified temperature range

◆ 30V maximum rating

Applications

◆ Battery packs

◆ Portable electronics

◆ Lithium Ion protection circuits

◆ Programmable Fuse

◆ Power Monitoring

◆ CPU Reset Circuits