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Product details

Parameters

Number of series cells 1, 2, 3 Charge current (Max) (A) 2.5 Operating Vin (Max) (V) 17 Cell chemistry Li-Ion/Li-Polymer Battery charge voltage (Min) (V) 4.2, 8.4, 12.6 Battery charge voltage (Max) (V) 4.2, 8.4, 12.6 Absolute Vin (safety rating) (Max) ((V)) 20 Control topology Switch-Mode Buck Control interface Standalone (RC-Settable) Features BAT temp thermistor monitoring (hot/cold profile), IC thermal regulation, IINDPM (Input current limit), Input OVP, Power Path Operating Vin (Min) (V) 4.5 Rating Catalog open-in-new Find other Battery charger ICs

Package | Pins | Size

VQFN (RGY) 24 19 mm² 5.5 x 3.5 open-in-new Find other Battery charger ICs

Features

  • 1.6-MHz Synchronous switched-mode charger with 2.5-A integrated N-MOSFETs
  • Up to 92% efficiency
  • 30-V Input rating with adjustable overvoltage protection
    • 4.5-V to 17-V Input operating voltage
  • Battery charge voltage
    • 1-Cell, 2-cell, or 3-cell with 4.2 V/cell
  • High integration
    • Automatic Power Path selector between adapter and battery
    • Dynamic power management
    • Integrated 20-V switching MOSFETs
    • Integrated bootstrap diode
    • Internal digital soft start
  • Safety
    • Thermal regulation loop throttles back current to limit TJ = 120°C
    • Thermal shutdown
    • Battery thermistor sense hot/cold charge suspend and battery detect
    • Adjustable input overvoltage protection
    • Cycle-by-cycle current limit
  • Accuracy
    • ±0.5% Charge voltage regulation
    • ±5% Charge current regulation
    • ±6% Input current regulation
  • <15-µA Battery current with adapter removed
  • <1.5-mA Input current with adapter present and charge disabled package

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Description

The BQ24133 device is a highly integrated stand-alone Li-Ion and Li-Polymer switched-mode battery charger with two integrated N-channel power MOSFETs. The device offers a constant-frequency synchronous PWM controller with high accuracy regulation of input current, charge current, and voltage. The BQ24133 closely monitors the battery pack temperature to allow charge only in a preset temperature window. The BQ24133 charges one, two, or three cells (selected by CELL pin) at a fixed 4.2 V/cell.

The BQ24133 charges the battery in three phases: preconditioning, constant current, and constant voltage.

The BQ24133 provides power path selector gate driver ACDRV/CMSRC on input NMOS pair ACFET (Q1) and RBFET (Q2), and BATDRV on a battery PMOS device (Q3). When the qualified adapter is present, the system is directly connected to the adapter. Otherwise, the system is connected to the battery. In addition, the power path prevents battery from boosting back to the input.

The BQ24133 charges the battery from a DC source as high as 17 V, including a car battery. The input overvoltage limit is adjustable through the OVPSET pin. The AVCC, ACP, and ACN pins have a 30-V rating. When a high-voltage DC source is inserted, Q1 and Q2 remain off to avoid high-voltage damage to the system.

For 1-cell applications where the battery is not removable, the system can be directly connected to the battery to simplify the power path design and reduce the cost. With this configuration, the battery can automatically supplement the system load if the adapter is overloaded.

The BQ24133 is available in a 24-pin, 5.5-mm × 3.5-mm thin VQFN package.

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BQ24170 ACTIVE Multiple cell, 4A, stand-alone buck Li-ion and Li-polymerymer battery charger w/ integrated MOSFETs This product is 4 A, 3S standalone buck switching charger with power path
Similar but not functionally equivalent to the compared device:
BQ24610 ACTIVE Stand-alone synchronous switch-mode Li-ion or Li- polymer battery charger with 5V–28V VCC input This product is 10 A, 6S standalone buck switching controller
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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 9
Type Title Date
* Datasheet BQ24133 1.6-MHz Synchronous Switched-Mode Li-Ion and Li-Polymer Stand-Alone datasheet (Rev. D) Sep. 24, 2020
Application note BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers Dec. 31, 2019
Technical articles When to use rechargeable batteries in small battery applications Oct. 01, 2019
Technical articles Understanding battery charger features and charging topologies Sep. 19, 2016
Technical articles Selecting the right battery charger for industrial applications Jul. 13, 2016
Technical articles Should I use a linear charger or a switching charger? Oct. 30, 2015
More literature Battery Management Solutions for Point of Sale Systems Aug. 18, 2014
Application note How to Review a Multicell Switching Charger Schematic Sep. 21, 2011
User guide bq24133 User's Guide Dec. 21, 2010

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARD Download
99
Description

The BQ24133EVM-715-15V (-002) assists users in evaluating the bq24133 synchronous battery charger. The bq24133 is highly integrated stand-alone Li-ion and Li-polymer switch-mode battery charge controllers with two integrated N-channel power MOSFETs and power path selector gate driver. It offers a (...)

Features
  • Evaluation module for bq24133
  • Stand-alone synchronous switch-mode, battery-charge controller
  • Integrated N-MOSFETs and power path selector
  • CELL pin setting to select between 1, 2, or 3 Li-ion batteries with 4.2V/cell.Input operating range: 6 V to 18 V
  • LED indication for charge status
  • Test points for key (...)
EVALUATION BOARD Download
99
Description

The BQ24133EVM-715-5V (-001) assists users in evaluating the bq24133 synchronous battery charger. The bq24133 is highly integrated stand-alone Li-ion and Li-polymer switch-mode battery charge controllers with two integrated N-channel power MOSFETs and power path selector gate driver. It offers a (...)

Features
  • Evaluation module for bq24133
  • Stand-alone synchronous switch-mode, battery-charge controller
  • Integrated N-MOSFETs and power path selector
  • Input operating range: 4.5 V to 8 V
  • LED indication for charge status
  • Test points for key signals available for testing purposes; easy probe hook-up
  • Jumpers available (...)

Design tools & simulation

CALCULATION TOOL Download
SLUC244A.ZIP (895 KB)
GERBER FILE Download
SLUC237.ZIP (267 KB)

Reference designs

REFERENCE DESIGNS Download
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PMP9491 PMP9491 is a 30W highly efficient and compact Portable Speaker/Audio Boom Box reference Design which can be used in 15W +15W Stereo or 30W Woofer Applications. The Power Source for the Design is 1 or 2 Li ion in Series . The design is broadly divided into three main stages:
  1. Highly efficient (...)
document-generic Schematic
REFERENCE DESIGNS Download
Integrated 1-3S Standalone Battery Charger with EMI Compliance Reference Design
PMP4397 The PMP4397 is a battery charger module reference design suitable for 2-cell battery applications with a DC input of 4.5V – 15V. Detailed data for radiated emissions compliance is provided. The cell number could be trimmed by resistors over a range from 1-cell to 3-cells. A typical application (...)
document-generic Schematic
REFERENCE DESIGNS Download
1.6MHz Synchronous Switch-Mode Li-Ion/Li-Polymer Stand-Alone Battery Charger Reference Design
TIDA-00027 This reference design is highly integrated stand-alone Li-ion and Li-polymer switch-mode battery charge solution with two integrated N-channel power MOSFETs and a power path selector gate driver. It offers a constant-frequency synchronous PWM controller with high accuracy regulation of input (...)

CAD/CAE symbols

Package Pins Download
VQFN (RGY) 24 View options

Ordering & quality

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  • Qualification summary
  • Ongoing reliability monitoring

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