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See Technical Specifications

BQ24401PW

Switch-mode NiCd/NiMH battery charger with dT/dt termination

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

BQ24401PW
Datasheet:

BQ24401PW Datasheet (PDF)
Battery Chemistry:

Multi-Chemistry
Programmable Features:

Timer
Voltage - Supply (Max):

6V
Operating Temperature:

-20°C ~ 70°C (TA)
EDA/CAD Models:

Request Free CAD Models for BQ24401PW

Email: [email protected]

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Tel: +852 95804164

BQ24401PW General Description

The bq24401 is a programmable, monolithic IC for fast-charge management of nickel cadmium (NiCd) and nickel metal-hydride (NiMH) in single or multi-cell applications.

The bq24401 provides these charge termination criteria:

Rate of temperature rise (ΔT/Δt)
Maximum temperature
Maximum charge time

For safety, the bq24401 inhibits fast charge until the battery voltage and temperature are within user-defined limits. If the battery voltage is below the low-voltage threshold, the bq24401 uses trickle-charge to condition the battery. For NiMH batteries, the bq24401 provides an optional top-off charge to maximize the battery capacity.

The integrated high-speed comparator allows the bq24401 to be the basis for a complete, high-efficiency battery charger circuit for nickel-based chemistries.

Key Features

Safe Management of Fast Charge for NiCd and NiMH Battery Packs
High-Frequency Switching Controller for Efficient and Simple Charger Design
Pre-Charge Qualification for Detecting Shorted, Damaged, or Overheated Cells
Fast-Charge Termination by ΔT/Δt, Maximum Temperature, and Maximum Charge Time
Selectable Top-Off Mode for Achieving Maximum Capacity in NiMH Batteries
Programmable Trickle-Charge Mode for Reviving Deeply Discharged Batteries and for Postcharge Maintenance
Built-in Battery Removal and Insertion Detection
Sleep Mode for Low Power Consumption
APPLICATIONS
- Nickel Charger
- High-Power, Multi-Cell Charger

Specifications

Category	Integrated Circuits (ICs)Power Management (PMIC)Battery Chargers	Series	-
Battery Chemistry	Multi-Chemistry	Number of Cells	-
Current - Charging	-	Programmable Features	Timer
Fault Protection	-	Charge Current - Max	-
Battery Pack Voltage	-	Voltage - Supply (Max)	6V
Interface	-	Operating Temperature	-20°C ~ 70°C (TA)
Mounting Type	Surface Mount	Base Product Number	BQ24401