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BQ24192IRGER

I2C 4.5A 1-cell Li-ion charger, NVDC power path, USB OTG, VQFN-24

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Manufacturer Part：

BQ24192IRGER

Package：

VQFN-24 (4.0 x 4.0 x 0.75 mm, with thermal pad)

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Description

Product Overview

The BQ24192IRGER from Texas Instruments is an I2C controlled 4.5A single-cell switch-mode battery charger with Narrow VDC (NVDC) power path management and USB OTG boost capability. Designed for Li-Ion/Li-Polymer batteries, it integrates synchronous MOSFETs, current sensing, and supports input voltages from 3.9V to 17V in a 24-pin VQFN package.

Key Specifications

Charge Current (max) 4.5 A
Cell Configuration 1-cell Li-Ion/Li-Polymer
Input Voltage Range 3.9V to 17V
Interface I2C
Switching Frequency 1.5 MHz
Battery Discharge MOSFET RDS(on) 12 mOhm typical
Charge Accuracy +/-0.5% voltage, +/-7% current
USB OTG Boost 5V at 1.3 A (93% efficiency at 1A)
Package VQFN-24 (4.0 x 4.0 mm)
Operating Temperature -40C to +85C

Features

  • Narrow VDC power path: instant-on with no/depleted battery
  • High efficiency: 92% at 2A, 90% at 4A charge current
  • I2C interface with full register control
  • USB BC1.2 compliant input detection
  • USB OTG boost: 5V/1.3A synchronous boost converter
  • Comprehensive safety: thermal regulation, OVP, OCP, NTC monitoring

Applications

  • Tablets and smartphones
  • Portable media players and speakers
  • Industrial handheld devices
  • 4G LTE routers and IoT gateways

The BQ24192IRGER from Texas Instruments is a highly integrated I2C-controlled 4.5A switch-mode battery charger for single-cell Li-Ion and Li-Polymer batteries. It features Narrow VDC (NVDC) power path management that allows the system to power on instantly even without a battery or with a deeply discharged battery. The device integrates synchronous buck MOSFETs, current sensing, bootstrap diode, and internal loop compensation for a compact solution. The USB OTG boost converter can deliver 5V at up to 1.3A from the battery, supporting USB peripheral functionality. Charge voltage accuracy of +/-0.5% and current accuracy of +/-7% ensure safe and reliable battery charging.

The BQ24192IRGER operates as a synchronous buck converter for charging and a synchronous boost converter for OTG mode. In charging mode, it steps down the input voltage to the battery voltage using integrated N-channel MOSFETs at 1.5 MHz switching frequency. The NVDC power path regulates the system voltage slightly above the battery voltage but not below a programmable minimum (3.5V), ensuring system operation even with a depleted battery. If the system load exceeds the input source capability, the battery supplements power through the low RDS(on) discharge MOSFET (12 mOhm). Charging follows three phases: pre-conditioning (for deeply discharged cells), constant current (CC), and constant voltage (CV) with automatic termination. The I2C interface provides control over charge voltage, charge current, input current limit, and OTG boost settings.

Pin Name Type Function
1 VBUS Power Input supply from USB or adapter
2,3 PMID Power Power mid-point (buck/boost switch node)
4,5 SW Power Switching node (to inductor)
6 BTST Power Bootstrap capacitor connection
7 REGN Power Internal 6V LDO output
8,9,10 CS/SR/SGND Analog Current sense resistor connections
11 SDA I/O I2C data
12 SCL Input I2C clock
13 OTG I/O OTG mode enable/boost output
14 INT Output Interrupt output (active low)
15 STAT Output Charge status output
16 PG Output Power good indicator
17 CE Input Charge enable (active low)
18 TS Analog NTC thermistor input
  • Tablet PC and smartphone battery charging systems
  • Portable audio speakers and media players
  • 4G LTE routers and Wi-Fi hotspot devices
  • Industrial handheld instruments with USB power
  • Power bank and portable charger designs
Manufacturer Part Number Package Notes
TI BQ24190RGER VQFN-24 With D+/D- USB detection
TI BQ24192IRGER VQFN-24 Industrial temp variant
TI BQ24195RGER VQFN-24 Higher boost current (2.1A)
TI BQ25895RGER VQFN-24 Newer generation, 5A, USB PD
TI BQ25890RGER VQFN-24 5A charger, no boost
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All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Shipping & Payment

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

Service & Packaging

All electronic components we source from our partnered supply chains go through strict incoming inspections.Through careful testing, we ensure everything delivered to customers is genuine original parts and meets quality requirements.In addition, we keep complete inspection records to make the entire supply chain process clear and traceable.

Certification
We have obtained a number of professional certifications and built our own professional testing laboratory.This ensures that every product we deliver to our customers meets the highest quality requirements.We conduct tests in strict accordance with procedures to ensure stable product quality and accurate parameters.To guarantee genuine original parts, we also cooperate with reliable third-party testing institutions for strict quality inspection.We always attach great importance to quality and fully comply with industry standards, relevant regulations, and ISO 9001:2015 requirements.

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