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BQ24075RGTR

1.5A Li-Ion charger, DPPM, VQFN-16, USB/adapter, OVP 6.4V, NTC monitor, power path

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Manufacturer Part：

BQ24075RGTR

Package：

VQFN-16 (4.00 x 4.00 x 0.90 mm, exposed pad)

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Description

Product Overview

The BQ24075RGTR from Texas Instruments is a 1.5A single-cell Li-Ion battery charger and system power path management IC in a VQFN-16 package. It supports USB and adapter inputs with dynamic power path management for reliable system operation.

Key Specifications

Battery Chemistry Li-Ion / Li-Polymer (single cell)
Charge Current Up to 1.5 A (programmable)
Input Voltage 4.35 V to 6.4 V (USB/adapter)
Charge Voltage 4.2 V (default, programmable)
Power Path Dynamic power path management
Operating Temperature -40C to +85C

Features

  • 1.5A maximum charge current with USB 100mA/500mA input current limit
  • Dynamic power path management prioritizes system load over battery charging
  • Independent power path from adapter to system even with depleted battery
  • Input overvoltage protection at 6.4V for USB safety
  • Battery temperature monitoring via NTC thermistor (TS pin)
  • Charge status and power good outputs for system indication

Applications

  • Smartphone and tablet USB charging with system power
  • Portable medical device battery management
  • Industrial handheld terminals with USB/adapter dual input
  • Wearable device charging and power path management

The BQ24075RGTR from Texas Instruments is a 1.5A single-cell Li-Ion/Li-Polymer battery charger with dynamic power path management (DPPM) in a VQFN-16 package. The DPPM feature independently manages the power path between the input source, the system load, and the battery, ensuring that the system always receives power even when the battery is deeply depleted. When the input source current is limited (e.g., USB 500mA), the DPPM automatically reduces the charge current to maintain system power, and only charges the battery with the remaining available current. This prevents system brownouts during USB charging. The device supports dual input sources (USB and adapter) with input overvoltage protection at 6.4V. The charge current is programmable up to 1.5A via an external resistor, with USB-specific current limit settings of 100mA and 500mA. The default charge voltage is 4.2V with +/-0.5% accuracy, and can be adjusted via an external resistor divider. Safety features include battery temperature monitoring through the TS pin with an NTC thermistor, charge safety timer, and thermal regulation that reduces charge current when the junction temperature exceeds 120C.

The BQ24075RGTR manages three power paths: input, system, and battery. (1) Power Path Management: The input power is first used to supply the system load (SYS pin). Any remaining current is directed to charge the battery (BAT pin). When the input current is insufficient to supply both the system and the charger, the DPPM circuit reduces the charge current to maintain the system voltage above the DPPM threshold (typically VBAT + 200mV). (2) Supplement Mode: If the system load exceeds the input current capability, the battery supplements the system through an internal FET, preventing system voltage drop. (3) Charging: The charger follows CC/CV profiles: constant current (fast charge) at the programmed rate, then constant voltage at 4.2V with taper current termination. A preconditioning phase charges deeply depleted batteries at reduced current. (4) Input OVP: When the input voltage exceeds 6.4V, the input FET disconnects the source, protecting the system. (5) Thermal Regulation: If the junction temperature exceeds 120C, the charge current is reduced to limit power dissipation, preventing thermal shutdown while maintaining charging.

Pin Name Type Function
1 IN Power Input supply (USB/adapter)
2 PG Output Power good (open-drain)
3 CE Input Charge enable (active low)
4 ISET Input Charge current set resistor
5 TS Input Battery thermistor sense
6 BAT Output Battery connection
7 SYS Output System power output
8 CHG Output Charge status (open-drain)
  • Smartphone and tablet USB charging with DPPM for system reliability
  • Portable medical device battery management with NTC monitoring
  • Industrial handheld terminals with USB/adapter dual input and OVP
  • Wearable device charging and power path management at 1.5A
Manufacturer Part Number Package Notes
TI BQ24072RGTR VQFN-16 1.5A, no DPPM, lower cost
TI BQ24133RGYR VQFN-16 2.5A, higher current
MPS MP2617GR-Z QFN-20 1-6S, stand-alone
TI BQ24074RGTR VQFN-16 Similar, different OVP threshold
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Quality Assurance

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Shipping & Payment

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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