Texas Instruments TPS61050YZGT

Overview

TPS61050YZGT from Texas Instruments is a 1.2-A synchronous boost LED driver IC with I²C interface, operating at 2 MHz switching frequency, delivering up to 1200 mA constant current to white LEDs with 250 mV LED sense voltage, and supporting torch/flash modes for mobile camera applications.

For engineers reviewing the TPS61050YZGT datasheet, TPS61050YZGT pinout, TPS61050YZGT application, or TPS61050YZGT equivalent, key selection criteria include I²C programmability (up to 400 kbps), zero-latency FLASH_SYNC strobe input, integrated safety timer, open/short LED protection, and DSBGA-12 NanoFree™ packaging for space-constrained handheld designs.

Technical Context

The TPS61050YZGT implements a current-mode PWM control architecture with 2-MHz fixed-frequency operation, enabling stable continuous-conduction mode (CCM) and minimizing EMI. Its dual-path regulation supports both constant-current LED driving (with 250 mV feedback threshold) and voltage-regulated boost output (4.5 V / 5 V / 5.25 V).

It integrates a synchronous NMOS power switch and rectifier (80 mΩ R_DS(on) each), a 3-bit ADC for LED V_F monitoring, and hardware TX-masking via GPIO. Shutdown current is 0.3 μA (typ), and thermal shutdown activates at 160°C (typ) with 20°C hysteresis.

Key Specifications

Pinout & Package

TPS61050YZGT is packaged in a 12-pin DSBGA (NanoFree™) package with 1.96 mm × 1.46 mm body size and 0.4-mm pitch. The package features bottom-side solder balls and requires PCB land pattern per TI SLUS525A.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61052YZGT, the TPS61050YZGT provides exclusive zero-latency FLASH_SYNC triggering and GPIO-based TX masking-essential for real-time camera coordination-while RT8532GQW trades programmability for lower gate count and bill-of-materials cost in static LED applications.

Availability

TPS61050YZGT is available at Aetrix Electronics and suitable for smartphone camera flash, mobile audio power supply, LED torch dimming, and low-light imaging modules requiring stable component supply across production lifecycles.

Supply support for TPS61050YZGT 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 leadership in precision power conversion and mobile interface solutions.

The TPS6105x product line was designed specifically for space-constrained, battery-powered imaging systems requiring high-efficiency, I²C-configurable LED driving with robust fault protection and camera-timing synchronization.

FAQ

What is the primary function of the FLASH_SYNC pin on the TPS61050YZGT?

The FLASH_SYNC pin on the TPS61050YZGT is a level-sensitive hardware strobe input that enables zero-latency switching between torch and flash LED current levels. When driven HIGH (to VIN), it commands the device to regulate at the programmed flash current (FC); when LOW (GND), it selects torch current (TC). This eliminates software-induced delays, making TPS61050YZGT ideal for precise camera exposure synchronization in smartphones and PDAs.

Does the TPS61050YZGT support both constant-current and constant-voltage operation?

Yes, the TPS61050YZGT supports both modes via I²C register configuration. In constant-current mode, it regulates LED current up to 1200 mA using the LED pin feedback (250 mV reference). In constant-voltage mode, it delivers regulated outputs of 4.5 V, 5 V, or 5.25 V-though this mode disables the LED current regulator and disconnects the LED pin. Voltage mode is useful for powering auxiliary circuits like audio amplifiers.

What protection features are integrated into the TPS61050YZGT?

The TPS61050YZGT integrates open-LED and short-LED protection, undervoltage lockout (UVLO at 2.4 V), overtemperature shutdown (160°C typical), output overvoltage protection (clamped at 6 V), and an integrated safety timer to limit flash pulse duration. All faults set corresponding flags readable via I²C, and the LED pin becomes high-impedance during shutdown to prevent leakage current.

How does the GPIO pin function in the TPS61050YZGT compared to the TPS61052YZGT?

In the TPS61050YZGT, the GPIO pin is configurable as either a logic input or open-drain output and supports TX-masking functionality-allowing immediate LED current reduction during cellular transmission to avoid RF interference. The TPS61052YZGT replaces GPIO with ENVM, a dedicated hardware enable for voltage-mode operation, and does not support TX masking or GPIO-driven signaling.

What is the recommended inductor value and package for optimal performance with the TPS61050YZGT?

The TPS61050YZGT is optimized for a 2.2-μH shielded inductor with saturation current ≥1.5 A and DC resistance <100 mΩ. TI recommends the 0805 or 1008 footprint (e.g., Coilcraft XAL5030-222MEB or Murata LQH3NPN2R2MJ0L). Layout must minimize SW and PGND loop area, place input/output capacitors close to pins, and ensure solid thermal vias under the DSBGA package's exposed die pad for junction-to-board thermal resistance of 35°C/W.