OUT

V3

V2

V1

VSS

VDD

REG

PACK+

PACK±

RIN

C IN

RIN

C IN

RIN

C IN

C VD

R VD

V OV

8

7

9

1

2

3

4

6

PWPD

Enable

Active

Delay Charging/

Discharge circuit

Delay

Timer

+

-

Vref

+

-

Amp

Comp

UVP_Vref

Programmable

setting

5 REG_EN

10

bq2961

SLUSBU5A – MAY 2015 – REVISED JANUARY 2016

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9 Detailed Description

9.1 Overview

The bq2960xy and bq2961xy are second-level overvoltage (OV) protectors with a regulated output. Each cell is

threshold is preprogrammed at the factory with a range between 3.85 V to 4.65 V.

preprogrammed at the factory with a range between 2 V to 2.8 V. For bq2960xy family, an external control pin,

Table 1. Programmable Parameters

OVERVOLTAGE RANGE (V)

OVERVOLTAGE DELAY (s)

UNDERVOLTAGE RANGE (V)

REGULATOR (V)

3.85 to 4.6 in 50 mV step

3, 4, 5.5, 6.5

2.0 to 2.8 in 50 mV step

1.8, 2.5, 3.3

9.2 Functional Block Diagram

Figure 9. bq2960xy Block Diagram