Product Summary

The BQ2002SN is a low-cost CMOS battery-charge controller providing reliable charge termination for both NiCd and NiMH battery applications. Controlling a current-limited or constant-current supply allows the BQ2002SN to be the basis for a cost-effective stand-alone or system-integrated charger. The BQ2002SN integrates fast charge with optional top-off and pulsed- trickle control in a single IC for charging one or more NiCd or NiMH battery cells.

Parametrics

BQ2002SN absolute maximum ratings: (1)VCC VCC relative to VSS: -0.3 to +7.0 V; (2)VT DC voltage applied on any pin excluding VCC relative to VSS: -0.3 to +7.0 V; (3)TOPR Operating ambient temperature: 0 to +70 ℃; (4)TSTG Storage temperature: -40 to +85 ℃; (5)TSOLDER Soldering temperature: +260 ℃; (6)TBIAS Temperature under bias: -40 to +85 ℃.

Features

BQ2002SN features: (1)Fast charge of nickel cadmium or nickel-metal hydride batteries; (2)Direct LED output displays charge status; (3)Fast-charge termination by -V,maximum voltage, maximum temperature, and maximum time; (4)Internal band-gap voltage reference; (5)Optional top-off charge; (6)Selectable pulse trickle charge rates; (7)Low-power mode; (8)8-pin 300-mil DIP or 150-mil SOIC.

Diagrams

BQ2002SN block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
BQ2002SN
BQ2002SN
Texas Instruments
Battery Management NiCd/NiMH Gating Charge Mngmnt IC
Data Sheet
0-1: $1.48
1-25: $1.23
25-100: $1.08
100-250: $0.94
BQ2002SNG4
BQ2002SNG4
Texas Instruments
Battery Management NiCd/NiMH Gating Charge Mngmnt IC
Data Sheet
0-1: $1.31
1-25: $1.20
25-100: $0.83
100-250: $0.82
BQ2002SNTRG4
BQ2002SNTRG4
Texas Instruments
Battery Management NiCd/NiMH Gating Charge Mngmnt IC
Data Sheet
0-1940: $0.66
1940-2000: $0.65
2000-2500: $0.65
2500-10000: $0.63
BQ2002SNTR
BQ2002SNTR
Texas Instruments
Battery Management NiCd/NiMH Gating Charge Mngmnt IC
Data Sheet
0-1940: $0.66
1940-2000: $0.65
2000-2500: $0.65
2500-10000: $0.63