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BQ24075RGTT

1.5A Linear Battery Charger with DPPM, USB 100/500mA, 28V OVP, VQFN-16

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Manufacturer Part：

BQ24075RGTT

Package：

VQFN-16 (3.0 x 3.0 x 0.9 mm)

Brand：
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Product Manual
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Description

Product Overview

The BQ24075RGTT from Texas Instruments is a standalone 1-cell 1.5A linear battery charger with dynamic power path management (DPPM). It provides autonomous charging for single-cell Li-Ion batteries from a USB or adapter source. The device features input overvoltage protection up to 28V, USB compliance with 100mA/500mA input current selection, and NTC thermistor input for temperature-qualified charging in a compact VQFN-16 package.

Key Specifications

Charging Topology Linear (single-cell Li-Ion)
Input Voltage Range 4.35V to 6.4V operating, 28V OVP
Battery Voltage 4.2V (Li-Ion)
Charge Current Up to 1.5A (programmable)
Termination Current Programmable
Input Current Options 100mA / 500mA (USB)
Battery Disconnect SYSOFF feature
Operating Temperature -40C to +85C
Package VQFN-16 (3x3mm)

Features

  • Dynamic Power Path Management (DPPM) for simultaneous charge and system load
  • VIN-DPM for input current limiting from adapter sources
  • 28V input overvoltage protection
  • USB compliant with 100mA/500mA input selection
  • NTC thermistor input for temperature-qualified charging
  • Programmable charge current and termination
  • Battery disconnect (SYSOFF) function
  • Thermal regulation and shutdown protection
  • Charge status outputs for LED or host interface

Applications

  • TWS charging cases
  • Portable medical devices
  • Smart watches and fitness bands
  • Video doorbells
  • Gaming accessories

The BQ24075RGTT from Texas Instruments is a standalone single-cell 1.5A linear battery charger with dynamic power path management (DPPM). It autonomously charges Li-Ion batteries from USB or adapter sources with input overvoltage protection up to 28V. The DPPM feature maintains system power priority over charging current, preventing system undervoltage during heavy load conditions. USB compliance with selectable 100mA/500mA input current ensures compatibility with USB hosts. NTC thermistor input enables JEITA temperature-qualified charging for battery safety.

The BQ24075RGTT uses a linear regulator architecture with an internal pass FET between the input and battery. The DPPM circuit monitors the system voltage at the OUT pin. When the system voltage drops below the DPPM threshold due to heavy load, the charger reduces the charge current to maintain system voltage. The VIN-DPM circuit limits input current when the adapter cannot supply the programmed current. The NTC input monitors battery temperature and adjusts the charge voltage and current according to JEITA guidelines. When the battery voltage reaches 4.2V and the charge current drops below the termination threshold, charging terminates. The SYSOFF pin disconnects the battery from the system for shipping or storage.

Pin Name Type Function
1 TS Input NTC thermistor input for temperature monitoring
2 STAT2 Output Charge status output 2
3 STAT1 Output Charge status output 1
4 SYSOFF Input Battery disconnect control (active high)
5 PG Output Power good status (open drain)
6 CE Input Charge enable (active low)
7 ISET2 Input USB 100mA/500mA current selection
8 ILIM Input Input current limit programming resistor
9 CHG Output Charge status output (open drain)
10 BAT Power Battery connection / charge output
11 BAT Power Battery connection
12 OUT Output System output (power path)
13 OUT Output System output
14 IN Power Input voltage (4.35-6.4V)
15 IN Power Input voltage
16 GND Power Ground
Pad EP Thermal Exposed thermal pad (connect to GND)
  • TWS earbuds and smart watch charging cases
  • Portable medical device battery charging
  • Video doorbell and security camera power
  • Gaming controller and accessory charging
  • USB-powered consumer electronics battery management
Manufacturer Part Number Package Notes
Texas Instruments BQ24075RGTR VQFN-16 Tape and reel version
Texas Instruments BQ24072RGTT VQFN-16 Without DPPM version
Texas Instruments BQ24040DSQR WQFN-10 Single-input 1A charger
Microchip MCP73871T-2CCI/ML QFN-20 USB charger with power path
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Quality Assurance

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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