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See Technical Specifications

BQ29412DCT3R

Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.45V)

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

BQ29412DCT3R
Datasheet:

BQ29412DCT3R Datasheet (PDF)
Function:

Battery Protection
Battery Chemistry:

Lithium Ion
Number of Cells:

2 ~ 4
Fault Protection:

Over Voltage
EDA/CAD Models:

Request Free CAD Models for BQ29412DCT3R

Email: [email protected]

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BQ29412DCT3R General Description

The bq2941x is a secondary overvoltage protection IC for 2-, 3-, or 4-cell lithium-ion battery packs that incorporates a high-accuracy precision overvoltage detection circuit. It includes a programmable delay circuit for overvoltage detection time.

FUNCTION

Each cell in a multiple-cell pack is compared to an internal reference voltage. If one cell reaches an overvoltage condition, the protection sequence begins. The bq2941x device starts charging an external capacitor through the CD pin. When the CD pin voltage reaches 1.2 V, the OUT pin changes from a low level to a high level.

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Key Features

2-, 3-, or 4-Cell Secondary Protection
Low Power Consumption I_CC < 2 µA [VCELL_(ALL) < V_(PROTECT)]
Fixed High Accuracy Overvoltage Protection Threshold
- bq29410 = 4.35 V
- bq29411 = 4.40 V
- bq29412 = 4.45 V
- bq29413 = 4.50 V
- bq29414 = 4.55 V
- bq29415 = 4.60 V
- bq29419 = 4.30 V
Programmable Delay Time of Detection
High Power Supply Ripple Rejection
Stable During Pulse Charge Operation
APPLICATIONS
- 2^nd-Level Overvoltage Protection in Li-Ion Battery Packs in:
  - Notebook Computers
  - Portable Instrumentation
  - Portable Equipment

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Battery Management	Series	-
Function	Battery Protection	Battery Chemistry	Lithium Ion
Number of Cells	2 ~ 4	Fault Protection	Over Voltage
Interface	-	Operating Temperature	-40°C ~ 110°C (TA)
Mounting Type	Surface Mount	Base Product Number	BQ29412