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bq771612

Texas Instruments
Part Number bq771612
Manufacturer Texas Instruments
Published Aug 25, 2020
Description Overvoltage Protection
Detailed Description Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq771600, bq771601, bq771602 b...
Datasheet PDF File bq771612 PDF File

bq771612
bq771612


Overview
Product Folder Sample & Buy Technical Documents Tools & Software Support & Community bq771600, bq771601, bq771602 bq771604, bq771605, bq771611, bq771612 SLUSAX0D – DECEMBER 2012 – REVISED JULY 2015 bq7716xy Overvoltage Protection for 2-Series to 4-Series Cell Li-Ion Batteries with External Delay Capacitor 1 Features •1 2-, 3-, and 4-Series Cell Overvoltage Protection • External Capacitor-Programmed Delay Timer • Fixed OVP Threshold • High-Accuracy Overvoltage Protection: ±10 mV • Low Power Consumption ICC ≈ 1 µA (VCELL(ALL) < VPROTECT) • Low Leakage Current Per Cell Input < 100 nA • Small Package Footprint – 8-pin WSON (3.
00 mm × 4.
00 mm) 2 Applications • Power Tools • UPS Battery Backup • Light Electric Vehicles – eBike – eScooter – Pedal Assist Bicycles 3 Description The bq7716xy device family provides an overvoltage monitor and protector for Li-Ion battery pack systems.
Each cell is monitored independently for an overvoltage condition.
For quicker production-line testing, the bq7716xy device provides a Customer Test Mode with greatly reduced delay time.
In the bq7716xy device, an external delay timer is initiated upon detection of an overvoltage condition on any cell.
Upon expiration of the delay timer, the output is triggered into its active state (either high or low, depending on the configuration).
The external delay timer feature also includes the ability to detect an open or shorted delay capacitor on the CD pin, which will similarly trigger the output driver in an overvoltage condition.
Table 1.
Device Information Table(1) PART NUMBER bq771600 PACKAGE WSON (8) BODY SIZE (NOM) 3.
00 mm × 4.
00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet and the Device Comparison Table.
4 Simplified Schematic CVD RVD VDD V4 V3 OUT CD CCD VSS V2 V1 RIN Cell 2 CIN Cell 1 RIN CIN 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, ...


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