Texas Instruments BQ24153AYFFR

Overview

BQ24153AYFFR from Texas Instruments is a fully integrated switch-mode single-cell Li-ion/Li-polymer battery charger IC with USB compliance, I²C programmability, and integrated USB-OTG boost functionality. It delivers up to 1.55 A charge current, supports 6 V max input voltage, provides ±0.5% charge voltage accuracy at 25°C, and operates in a 2.1 mm × 2 mm 20-pin WCSP (YFF) package. It is designed for space-constrained portable devices requiring fast, safe, and host-controlled charging.

For engineers reviewing the BQ24153AYFFR datasheet, BQ24153AYFFR pinout, BQ24153AYFFR application, or BQ24153AYFFR equivalent, key selection criteria include its 3 MHz synchronous PWM controller, VIN-based dynamic power management (DPM), OTG boost output (5.05 V/200 mA), I²C-configurable charge parameters (voltage, current, timers), and thermal regulation down to 120°C junction temperature.

Technical Context

The BQ24153AYFFR implements a fixed-frequency (3 MHz) synchronous buck converter architecture with integrated high-side and low-side power MOSFETs, reverse-blocking FET, and current-sense circuitry. It uses internal current-mode control with cycle-by-cycle limiting (1.8–3.0 A) and supports three-phase charging: trickle (20–40 mA), constant-current (up to 1.55 A), and constant-voltage (3.5–4.44 V, ±0.5% at 25°C).

Its dual-role operation includes charge mode (VBUS-to-battery) and boost mode (battery-to-VBUS), enabled via the OTG pin or I²C register. Input current is regulated with ±5% accuracy at 100 mA and 500 mA setpoints, and VIN DPM threshold is programmable from 4.2 V to 4.76 V with ±3% accuracy.

Key Specifications

Pinout & Package

Package: 20-pin Wafer Chip Scale Package (WCSP), YFF variant, 2.1 mm × 2 mm body size, bottom-side ball array.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar single-cell Li-ion charger applications.

Compared with BQ24156AYFFR and BQ24158YFFT, the BQ24153AYFFR uniquely combines 6 V input rating, hardware OTG enable (D4), and battery detection at power-up-making it optimal for USB-hosted portable devices needing guaranteed OTG readiness and robust source validation.

Availability

BQ24153AYFFR is available at Aetrix Electronics and suitable for smartphone charging systems, USB-powered audio players, compact medical wearables, industrial handheld scanners, and portable diagnostic tools requiring stable component supply, full USB compliance, and integrated OTG capability.

Supply support for BQ24153AYFFR 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, embedded processing, and power management technologies, with decades of expertise in battery charging solutions.

The BQ24153AYFFR belongs to TI's bq2415x family of highly integrated Li-ion chargers, designed specifically for space-constrained USB-powered portable electronics requiring programmable, safe, and efficient single-cell charging with OTG support.

FAQ

What is the maximum input voltage rating for the BQ24153AYFFR?

The BQ24153AYFFR has an absolute maximum input voltage rating of 20 V on the VBUS pin, but its recommended operating input voltage range is 4 V to 6 V. Exceeding 6 V during normal operation may trigger overvoltage protection (6.3–6.7 V threshold) and halt charging. This 6 V limit ensures compatibility with standard USB 2.0 ports and prevents stress on internal FETs and regulators in the BQ24153AYFFR.

Does the BQ24153AYFFR support USB On-The-Go (OTG) functionality?

Yes, the BQ24153AYFFR supports USB OTG boost mode, delivering a regulated 5.05 V ±3% output at up to 200 mA from the battery to the VBUS pins. This function is enabled via the OTG pin (D4) or I²C register control. The BQ24153AYFFR also includes dedicated OTG overvoltage protection (5.8–6.2 V) and minimum battery voltage enforcement (2.5 V), making it a self-contained OTG solution without external components.

How accurate is the charge voltage regulation in the BQ24153AYFFR?

The BQ24153AYFFR provides ±0.5% charge voltage regulation accuracy at 25°C and ±1% across the full operating temperature range (0°C to 125°C). This precision applies to the programmable output regulation voltage range of 3.5 V to 4.44 V. The accuracy is achieved through trimmed internal references and closed-loop feedback, ensuring consistent cell termination and extended battery cycle life in the BQ24153AYFFR.

What package type and dimensions does the BQ24153AYFFR use?

The BQ24153AYFFR is packaged in a 20-pin Wafer Chip Scale Package (WCSP) with YFF designation, measuring 2.1 mm × 2 mm with a typical height of 0.5 mm. It uses a bottom-side ball grid array (DSBGA) compatible with standard reflow processes. This ultra-compact package enables placement in tight spaces typical of modern smartphones and wearables, and is shared across the bq2415x family including BQ24156AYFFR and BQ24158YFFT.

Can the BQ24153AYFFR operate without a battery connected?

Yes, the BQ24153AYFFR supports system power-up without a battery when configured in appropriate modes. In boost mode (OTG active), it can power the system load from the battery. In charge mode, if no battery is detected, the BQ24153AYFFR enters high-impedance mode and reports fault status via STAT pin or I²C-allowing host processors to manage system behavior safely. Battery detection is performed at power-up and continuously monitored.