Texas Instruments BQ25960YBGR

Overview

BQ25960YBGR from Texas Instruments is an I²C-controlled, single-cell Li-ion switched-capacitor parallel battery charger delivering 8-A peak charging current with 98.1% peak efficiency. It implements dual-phase switched-cap architecture (2× input voltage, 2× output current), integrated 5-A bypass mode (21-mΩ R_DS(on)), dual-input power mux control, and 16-bit ADC-based monitoring of voltage, current, and temperature. It enables high-efficiency fast charging in space-constrained smartphone and tablet platforms.

For engineers reviewing the BQ25960YBGR datasheet, BQ25960YBGR pinout, BQ25960YBGR application, or BQ25960YBGR equivalent, key selection criteria include its 8-A switched-cap charge capability, 5-A bypass mode performance, dual-input source arbitration, integrated protection thresholds (BUSOVP up to 12.75 V, BATOVP 3.49–4.76 V), and DSBGA-36 package compatibility with fine-pitch mobile PCB layouts.

Technical Context

The BQ25960YBGR uses a patented dual-phase switched-capacitor topology where each phase operates with synchronous flying-capacitor switching at 500 kHz, enabling input-to-battery voltage doubling and current halving across the adapter cable. Its architecture reduces required input capacitance and minimizes thermal stress on external components.

It integrates a dual-input power mux controller driving external N-FETs for source selection during fast charge or USB OTG/reverse TX mode, while supporting standalone single-input operation without external FETs. All protection functions-including BUSOCP, BATOCP, TSBAT_FLT, TSBUS_FLT, and TDIE_FLT-are independently configurable via I²C registers and trigger interrupt-driven host response.

Key Specifications

Pinout & Package

Package: 36-pin DSBGA (YBG), 2.55 mm × 2.55 mm body size, 0.4-mm ball pitch, bottom-side thermal pad.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar switched-cap parallel battery charger applications.

Compared with BQ25960YBGR, BQ25970YFFR offers smaller die area and higher pin count but removes bypass mode-requiring external circuitry for 5-V adapter compatibility. BQ25968YFFR trades peak current and feature set for lower cost, making it appropriate only where 6-A charge and absence of bypass are acceptable design constraints.

Availability

BQ25960YBGR is available at Aetrix Electronics and suitable for smartphone fast charging, tablet dual-source power management, and USB OTG reverse power delivery requiring stable component supply, long-term lifecycle assurance, and automotive-grade traceability.

Supply support for BQ25960YBGR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of leadership in battery management ICs for mobile and portable electronics.

The BQ25960YBGR belongs to TI's BQ25xxx switched-capacitor charger family, designed specifically to address thermal and efficiency bottlenecks in high-current smartphone/tablet charging systems while maintaining compatibility with existing USB-C infrastructure.

FAQ

What is the maximum supported input voltage for BQ25960YBGR in switched-cap mode?

The BQ25960YBGR supports up to 12.75 V input voltage in switched-cap mode, as specified in its BUSOVP_RANGE parameter. This allows compatibility with USB PD 3.0 extended power range (EPR) adapters and proprietary high-voltage fast-charge protocols. Operation above 12.75 V requires external ACFET protection per datasheet Section 7.1.

Does BQ25960YBGR support true 8-A charging continuously, and what thermal conditions apply?

Yes, BQ25960YBGR delivers continuous 8-A switched-cap charging with 98.1% peak efficiency, validated at V_BAT = 4.0 V and T_J ≤ 120°C. Its DSBGA-36 package has R_θJA = 54.8°C/W; sustained 8-A operation requires ≥2-layer PCB with thermal vias to inner ground plane and ≥2 cm² copper pour under the device per layout guidelines in Section 11.

How does the dual-input mux function work in BQ25960YBGR, and can it be used without external FETs?

The BQ25960YBGR's dual-input mux controller drives external N-FETs (ACFET1/RBFET1 and ACFET2/RBFET2) via ACDRV1/ACDRV2 pins for source arbitration. However, it also supports single-input operation: if only VAC1 is used, ACDRV2 is grounded and VAC2 tied to VBUS-eliminating need for external FETs while retaining full I²C configurability and protection.

What is the role of the 16-bit ADC in BQ25960YBGR, and which measurements does it support?

The integrated 16-bit ADC in BQ25960YBGR provides real-time, calibrated measurements of eight critical parameters: V_AC1/V_AC2, V_VBUS, V_VOUT, V_BAT, I_BUS, I_BAT, T_SBAT, T_SBUS, and T_DIE. It supports selectable conversion times (3–24 ms) and resolution (10–15 bits), enabling host MCU to implement dynamic charge profiling and thermal derating without external sensors.

Can BQ25960YBGR operate in standalone mode without I²C communication?

No-BQ25960YBGR requires I²C initialization to configure critical functions including charge enable, protection thresholds, ADC settings, and input source selection. While basic power-up occurs with default register values, safe and functional operation (including 8-A charging and bypass mode) mandates host I²C control per Section 8.4 of the datasheet.