1 Features

• 2-, 3-, and 4-series cell overvoltage protection

• External capacitor-programmed delay timer

• Fixed OVP threshold

• High-accuracy overvoltage protection:

±10 mV

• Low power consumption ICC ≈ 1 μA

(VCELL(ALL) < VPROTECT)

• Low leakage current per cell input < 100 nA

• Small package footprint

– 8-pin WSON (3.00 mm × 4.00 mm)

2 Applications

• Power tools

• UPS battery backup

• Light electric vehicles

3 Description

The BQ7716xy device family provides an overvoltage

monitor and protector for Li-Ion battery pack

systems. Each cell is monitored independently for

an overvoltage condition. For quicker production-line

testing, the BQ7716xy device provides a Customer

Test Mode with greatly reduced delay time.

In the BQ7716xy device, an external delay timer is

initiated upon detection of an overvoltage condition on

any cell. Upon expiration of the delay timer, the output

is triggered into its active state (either high or low,

depending on the configuration). The external delay

timer feature also includes the ability to detect an

open or shorted delay capacitor on the CD pin, which

will similarly trigger the output driver in an overvoltage

condition.