Texas Instruments TPS61054DRCR

Overview

TPS61054DRCR from Texas Instruments is a synchronous boost LED driver IC designed for high-power white LED flash/torch applications in mobile cameras. It delivers up to 700 mA LED current in flash mode, regulates output voltage to 5.0 V in voltage-mode operation, and features 2-MHz fixed-frequency PWM control with 250-mV LED sense voltage for >96% peak efficiency. Its integrated safety timer (820 ms), zero-latency FLASH_SYNC input, and dual-mode logic interface (MODE0/MODE1) enable precise camera synchronization in smartphone front/rear camera modules.

For engineers reviewing the TPS61054DRCR datasheet, TPS61054DRCR pinout, TPS61054DRCR application, or TPS61054DRCR equivalent, key selection criteria include torch/flash current programmability (75 mA / 700 mA), QFN-10 package thermal performance (θJA = 49°C/W), integrated open/short LED protection, and compatibility with 2.2-µH inductors and low-ESR ceramic capacitors in space-constrained PCB layouts.

Technical Context

The TPS61054DRCR implements a current-mode, fixed-frequency (2.0 MHz typical) synchronous boost topology with integrated NMOS power switch and synchronous rectifier. It operates in four distinct modes-shutdown, torch-only, torch+flash, and 5.0-V voltage regulation-selected via MODE0/MODE1 logic inputs.

Its dual-path regulation architecture combines constant-current sink control (250-mV LED sense threshold) with voltage-mode feedback (5.0-V regulated output), while the FLASH_SYNC and Tx-TOFF pins provide zero-latency flash triggering and RF PA masking without affecting safety timer duration.

Key Specifications

Pinout & Package

TPS61054DRCR is housed in a thermally enhanced 10-pin QFN package (3 mm × 3 mm, 0.5-mm pitch) with exposed PowerPAD™ connected internally to PGND for optimal heat dissipation. The package supports reflow soldering and achieves θJA = 49°C/W on standard 2-layer PCBs with 1-in² copper pour.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61054DRCR, TPS61055DRCR offers identical functionality at reduced flash current, while RT9397BZSP trades integrated safety features for higher switching frequency and slightly lower peak current-making TPS61054DRCR the optimal choice for camera modules requiring guaranteed flash timing and RF coexistence.

Availability

TPS61054DRCR is available at Aetrix Electronics and suitable for smartphone camera modules, mobile video torch systems, and portable audio amplifier supplies requiring stable component supply, tight parametric consistency, and long-term production continuity.

Supply support for TPS61054DRCR 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 experience in mobile power solutions.

The TPS6105x product line was engineered specifically for high-efficiency, space-constrained white LED driving in battery-powered imaging systems-emphasizing integration, thermal robustness, and camera-system timing precision.

FAQ

What are the exact torch and flash current settings for TPS61054DRCR?

The TPS61054DRCR delivers 75 mA in torch mode and 700 mA in flash mode, as defined by its ILIM configuration (ILIM = 01). These values are factory-trimmed and specified over –40°C to +85°C ambient temperature. The device maintains ±12% LED current accuracy in flash mode and ±15% settling time to target current within 160 µs after FLASH_SYNC assertion. This precision enables repeatable illumination intensity across production units without calibration.

How does the FLASH_SYNC pin function in TPS61054DRCR?

The FLASH_SYNC pin on TPS61054DRCR is a level-sensitive, zero-latency trigger that immediately transitions the device from torch (75 mA) to flash (700 mA) current upon detection of a logic-high signal. Its response time is 1.2 ms from shutdown to full flash output. The internal 820-ms safety timer starts on the rising edge of FLASH_SYNC and terminates either at timeout or on falling edge-ensuring compliance with IEC 62471 photobiological safety standards for LED flash exposure.

Can TPS61054DRCR operate as a general-purpose boost converter?

Yes, TPS61054DRCR supports voltage-regulation mode (MODE0 = 1, MODE1 = 1) delivering a tightly regulated 5.0 V ±3% output up to 1 A load current. In this mode, it functions as a standard synchronous boost converter with 2-MHz switching, 250-mV reference accuracy, and overvoltage protection clamping at 6.0 V. This capability eliminates the need for a separate 5-V rail generator in systems where the same IC powers both LEDs and auxiliary circuitry like audio amplifiers.

What thermal performance can be expected from TPS61054DRCR in QFN-10 package?

TPS61054DRCR in the DRC (QFN-10) package achieves θJA = 49°C/W on a standard 2-layer PCB with 1-in² thermal pad copper pour. At 700 mA flash current and 3.6-V input, typical power dissipation is ~350 mW, resulting in ~17°C junction-to-ambient rise above ambient. The IC enters thermal shutdown at 160°C junction temperature and resumes operation only after cycling through shutdown mode-ensuring robust operation in compact smartphone camera modules with limited airflow.

Does TPS61054DRCR support LED dimming below torch current?

Yes, TPS61054DRCR implements a dedicated low-light dimming mode activated in torch-only mode (MODE1 = 0, MODE0 = 1) with FLASH_SYNC = HIGH. It generates a fixed 122-Hz PWM waveform with 6.3% duty cycle, reducing average LED current to ~5% of nominal torch level (≈4 mA). This mode avoids visible flicker while enabling subtle UI illumination or proximity-sensing backlighting without requiring external PWM controllers or firmware intervention.