BQ294602 Datasheet, PDF (1/17 Pages) Texas Instruments – Single-Cell Protector for Li-Ion Batteries

bq294602, bq294604
www.ti.com
SLUSAS0B – DECEMBER 2011 – REVISED MARCH 2012
Single-Cell Protector for Li-Ion Batteries
Check for Samples: bq294602, bq294604
FEATURES
1
• Single-Cell Monitor for Secondary Protection
• Fixed Programmable Delay Timer
• Fixed OVP Threshold
– bq294602 = 4.35 V with 4-s Delay Timer
– bq294604 = 4.35 V with 6.5-s Delay Timer
– bq294622 = 4.45 V with 4-s Delay Timer
– bq294624 = 4.45 V with 6.5-s Delay Timer
– bq294682 = 4.225 V with 4-s Delay Timer
– bq294684 = 4.225 V with 6.5-s Delay Timer
• High-Accuracy Overvoltage Protection:
± 10 mV
• Low Power Consumption I_CC ≈ 1 µA
(V_CELL(ALL) < V_PROTECT)
• Low leakage current per cell input < 100 nA
• Small package footprint
– 6-pin SON
APPLICATIONS
• 2^nd-Level Protection in Li-Ion Battery Packs in:
– Tablets
– Slates
– Portable Equipment and Instrumentation
DESCRIPTION
The bq2946xy family of products is a secondary level voltage monitor and protector for Li-Ion battery pack
systems. The cell is monitored for over voltage condition and triggers an internal counter once the OVP threshold
is exceeded and after a fixed set delay the out is transitioned to a high level. The output is reset (goes low) if the
cell voltage drops below the set threshold minus the hysteresis.
DRV Package
(Top View)
NC 1
V1 2
VSS 3
PWR PAD
6 OUT
5 VDD
4 VSS
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains
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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