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bq29200

Texas Instruments
Part Number bq29200
Manufacturer Texas Instruments
Description Voltage Protection
Published Jan 4, 2020
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq29200, bq29209 SLUSA52C – SE...
Datasheet PDF File bq29200 PDF File

bq29200
bq29200


Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq29200, bq29209 SLUSA52C – SEPTEMBER 2010 – REVISED MARCH 2016 bq2920x Voltage Protection with Automatic Cell Balance for 2-Series Cell Li-Ion Batteries 1 Features •1 2-Series Cell Secondary Protection • Automatic Cell Imbalance Correction with External Enable Control – ±30-mV Enable, 0-mV Disable Thresholds Typical • External Capacitor-Controlled Delay Timer • External Resistor-Controlled Cell Balance Current • Low Power Consumption ICC < 3 µA Typical (VCELL(ALL) < VPROTECT) • Internal Cell Balancing Handles Current up to 15 mA • External Cell Balancing Mode Supported • High-Accuracy Overvoltage Protection: – ±25 mV with TA = 0°C to 60°C • Fixed Overvoltage Protection Thresholds: 4.
30 V, 4.
35 V • Small 8L DRB Package 2 Applications • 2nd Level Protection in Li-Ion Battery Packs – Netbook Computers – Power Tools – Portable Equipment and Instrumentation – Battery Backup Systems 3 Description The bq2920x device is a secondary overvoltage protection IC for 2-series cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit and automatic cell imbalance correction.
The voltage of each cell in a 2-series cell battery pack is compared to a factory programmed internal reference voltage.
If either cell reaches an overvoltage condition, the OUT pin changes from low to high state.
The bq2920x can perform automatic voltage-based cell imbalance correction.
Balancing can start when the cell voltages are different by nominally 30 mV or more and stops when the difference is nominally 0 mV.
Cell balancing is enabled and disabled by the CB_EN pin.
Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) bq29200 bq29209 VSON (8) 3.
00 mm × 3.
00 mm (1) For all available packages, see the orderable addendum at the end of the datasheet.
Simplified Schematic PACK+ CELL2 CELL1 RCB2 RCB1 RCB 1 VC2 CIN OUT 8 2 VC1 VDD 7 CIN 3 VC1_CB CB_E...


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