Texas Instruments TPS61050AYZGR

Overview

TPS61050AYZGR from Texas Instruments is a 12-pin DSBGA synchronous boost LED driver IC designed for camera flash/torch in mobile devices. It delivers up to 1.2 A LED current with 250 mV sense voltage, operates at 2 MHz switching frequency, supports I²C interface (up to 400 kbps), and integrates zero-latency FLASH_SYNC for precise strobe timing in smartphone camera modules.

For engineers reviewing the TPS61050AYZGR datasheet, TPS61050AYZGR pinout, TPS61050AYZGR application, or TPS61050AYZGR equivalent, this page provides verified technical context, validated pin functions, confirmed operating modes (torch/flash/voltage-regulated), real-world efficiency data (up to 96%), and two rigorously cross-checked alternative parts for white LED power management in space-constrained portable electronics.

Technical Context

The TPS61050AYZGR implements a constant-frequency, current-mode PWM control architecture with integrated NMOS switch and synchronous NMOS rectifier. It operates exclusively in continuous-conduction mode, eliminating discontinuous-mode ringing and enabling low-noise output.

Its dual-role architecture supports both constant-current LED driving (with 250 mV LED sense threshold) and voltage-regulated boost operation (4.5 V / 5 V / 5.25 V outputs). The I²C interface controls all functional modes, while FLASH_SYNC enables hardware-triggered, zero-latency transition between torch and flash current levels.

Key Specifications

Pinout & Package

TPS61050AYZGR uses a 12-pin DSBGA (Die Size Ball Grid Array) package with nominal body size 1.96 mm × 1.46 mm and 0.4-mm ball pitch. This ultra-compact NanoFree™ packaging targets space-critical mobile camera modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar white LED driver applications.

Compared with TPS61052YZGR, the TPS61050AYZGR offers GPIO flexibility for system signaling but requires software-based voltage-mode activation; versus RT8532GQW, it delivers superior timing precision, programmability, and fault coverage at higher integration cost.

Availability

TPS61050AYZGR is available at Aetrix Electronics and suitable for smartphone camera flash systems, mobile audio power supplies, low-light imaging subsystems, and wearable camera modules requiring stable component supply across high-volume production cycles.

Supply support for TPS61050AYZGR 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 expertise in power management ICs for portable electronics.

The TPS6105x product line was engineered specifically for high-efficiency, space-constrained white LED driving in mobile imaging systems - integrating boost conversion, current regulation, I²C control, and flash synchronization in a single ultra-small package.

FAQ

What is the primary function of the FLASH_SYNC pin on the TPS61050AYZGR?

The FLASH_SYNC pin on the TPS61050AYZGR is a level-sensitive hardware strobe input that enables zero-latency switching between torch and flash LED current levels. When driven LOW, the device regulates at the programmed torch current; when driven HIGH, it immediately transitions to the flash current level - bypassing I²C command latency to synchronize precisely with camera shutter timing. This functionality is exclusive to the TPS61050AYZGR variant and is documented in the SLUS525A datasheet Section 5 and Figure 16.

Does the TPS61050AYZGR support voltage-regulated boost mode, and how is it enabled?

Yes, the TPS61050AYZGR supports voltage-regulated boost mode with selectable output voltages of 4.5 V, 5 V, or 5.25 V. It is enabled exclusively via I²C command by setting MODE_CTRL[1:0] = 11 and configuring OV[1:0] bits in the control register - unlike the TPS61052 variant, it does not include a dedicated ENVM hardware pin. In this mode, the LED current regulator is disabled and VOUT is regulated to the selected voltage, making the TPS61050AYZGR suitable for powering audio amplifiers or other system loads requiring boosted supply rails.

What is the maximum continuous LED current the TPS61050AYZGR can deliver, and what conditions affect it?

The TPS61050AYZGR delivers up to 1.2 A continuous LED current in flash mode under recommended operating conditions: input voltage ≥2.5 V, junction temperature ≤125°C, and proper thermal layout. Actual achievable current depends on input voltage, LED forward voltage, inductor DCR, PCB copper area, and ambient temperature. At 3.6-V input and 3.2-V LED VF, typical operation sustains 1.2 A with >90% efficiency; exceeding thermal limits triggers 160°C shutdown, and current-limit settings (ILIM bits) can restrict peak current to 850 mA–2.3 A depending on configuration.

How does the TPS61050AYZGR handle LED open-circuit and short-circuit faults?

The TPS61050AYZGR provides autonomous protection against both LED failure modes. In open-circuit condition, the control loop drives VOUT upward until the overvoltage protection (OVP) circuit clamps output at 6 V (typical) and asserts the LED FAILURE (LF) flag. In short-circuit condition, the low-side current regulator limits output current to the programmed ILIM value and similarly sets the LF flag. These protections operate independently of I²C communication and are active in all operational modes except shutdown, ensuring robustness in field-deployed camera modules.

What package type and dimensions does the TPS61050AYZGR use, and why is it significant for mobile design?

The TPS61050AYZGR uses a 12-pin DSBGA (Die Size Ball Grid Array) package with nominal dimensions of 1.96 mm × 1.46 mm and 0.4-mm ball pitch - marketed by Texas Instruments as NanoFree™ technology. This ultra-compact footprint is critical for mobile camera modules where PCB real estate is severely constrained; TI specifies the total solution area (including inductor, capacitors, and IC) fits within 25 mm². The DSBGA's bottom-terminal construction also improves thermal transfer to the PCB, supporting sustained flash operation without external heatsinking.