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DRV Package
(Top View)
1
2
3
4
5
6
OUT
VDD
V1
V3
V2
VSS
PWR PAD
bq294502, bq294504, bq294512, bq294515
bq294522, bq294524, bq294532, bq294562
bq294572, bq294582, bq294592
www.ti.com
SLUSAJ3C –SEPTEMBER 2011–REVISED MAY 2012
Overvoltage Protection for 2-Series and 3-Series Cell Li-Ion Batteries
Check for
Samples: bq294502, bq294504, bq294512, bq294515, bq294522, bq294524, bq294532, bq294562, bq294572, bq294582, bq294592
1
FEATURES
• Low Power Consumption I
CC
≈ 1 µA
(V
CELL(ALL)
< V
PROTECT
)
• 2-Series and 3-Series Cell Monitor for
• Low leakage current per cell input < 100 nA
Secondary Protection
• Small package footprint
• Fixed Programmable Delay Timer
– 6-pin SON
• Fixed OVP Threshold:
– bq294502 = 4.35 V with 4-s Delay Timer
APPLICATIONS
– bq294504 = 4.35 V with 6.5-s Delay Timer
• 2
nd
-Level Protection in Li-Ion Battery Packs in:
– bq294512 = 4.40 V with 4-s Delay Timer
– Tablets
– bq294515 = 4.425 V with 4-s Delay Timer
– Slates
– bq294522 = 4.45 V with 4-s Delay Timer
– Power Tools
– bq294524 = 4.45 V with 6.5-s Delay Timer
– Notebook Computers
– bq294532 = 4.50 V with 4-s Delay Timer
– Portable Equipment and Instrumentation
– bq294562 = 4.25 V with 4-s Delay Timer
– bq294572 = 4.00 V with 4-s Delay Timer
– bq294582 = 4.225 V with 4-s Delay Timer
– bq294584 = 4.225 V with 6.5-s Delay Timer
– bq294592 = 4.30 V with 4-s Delay Timer
• High-Accuracy Overvoltage Protection:
± 10 mV
DESCRIPTION
The bq2945xy family of products is a secondary level voltage monitor and protector for Li-Ion battery pack
systems. Each cell is monitored independently for an overvoltage condition. Based on the configuration, an
output is triggered after a fixed delay if any one of the two or three cells has an overvoltage condition. This output
will be triggered into a high state after an overvoltage condition has satisfied the specified delay timer.
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains
Copyright © 2011–2012, Texas Instruments Incorporated
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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