Texas Instruments TPS61054YZGR

Overview

TPS61054YZGR from Texas Instruments is a high-power white LED driver IC featuring a 2-MHz synchronous boost converter with integrated current-sink regulation, 700-mA flash current capability, 250-mV LED sense voltage, and dual-mode operation (current-regulated LED drive or 5.0-V voltage-regulated output). It serves as the primary LED power controller in smartphone camera flash subsystems.

For engineers reviewing the TPS61054YZGR datasheet, TPS61054YZGR pinout, TPS61054YZGR application, or TPS61054YZGR equivalent, key selection considerations include torch/flash mode logic interface timing, thermal performance in DSBGA packaging, 0.3-μA shutdown current, integrated safety timer (820 ms), and compatibility with low-profile 2.2-μH inductors for compact PCB layouts.

Technical Context

The TPS61054YZGR implements a constant-frequency, current-mode PWM control architecture with internal NMOS switch and synchronous NMOS rectifier, operating exclusively in continuous-conduction mode to minimize EMI and eliminate switch-node ringing. Its dual-path regulation-low-side current sink (250 mV V_LED) for LED drive and error-amplifier-based voltage loop for 5.0-V output-enables shared use with audio amplifiers.

Logic-controlled functional modes (MODE0/MODE1) configure shutdown, torch-only, torch+flash, or voltage-regulation states; FLASH_SYNC enables zero-latency flash activation; Tx-TOFF provides instantaneous flash-to-torch blanking without affecting safety timer duration. All modes are validated for –40°C to 85°C ambient operation.

Key Specifications

Pinout & Package

TPS61054YZGR uses a 12-pin DSBGA (Die Size Ball Grid Array) package with 1.96 mm × 1.46 mm body size and 0.5-mm ball pitch. Thermal pad is internally connected to PGND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61055YZGR, the TPS61054YZGR delivers higher flash current and thermal headroom; compared with RT9397BF, it offers superior RF coexistence features and faster flash response, justifying its use in flagship mobile camera systems.

Availability

TPS61054YZGR is available at Aetrix Electronics and suitable for smartphone camera modules, portable medical imaging devices, and industrial handheld scanners requiring stable component supply, precise LED current control, and robust thermal management.

Supply support for TPS61054YZGR 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 company specializing in analog and embedded processing technologies, with leadership in power management ICs for portable electronics.

The TPS6105x product line was designed specifically for high-efficiency, space-constrained white LED driving in mobile camera systems, integrating flash control, thermal protection, and multi-mode regulation into a single DSBGA package.

FAQ

What is the maximum flash current supported by the TPS61054YZGR?

The TPS61054YZGR supports a maximum flash current of 700 mA, as specified in the Device Options table of the SLUS760B datasheet. This value is factory-configured and fixed for the TPS61054 variant; it is not adjustable via external components or registers. The TPS61054YZGR achieves this current while maintaining 250-mV LED sense voltage and operating within its 1500-mA switch current limit threshold.

Does the TPS61054YZGR require external compensation components?

No, the TPS61054YZGR does not require external compensation components. Its current-mode PWM control architecture incorporates internal slope compensation and fixed-frequency oscillator, enabling stable operation across all modes without external RC networks. The device is optimized for use with standard 2.2-μH inductors and 10-μF input capacitors, as confirmed in the Typical Application Diagram and Layout Guidelines sections of the datasheet.

How does the TPS61054YZGR handle LED open-circuit failure?

When an LED open-circuit fault occurs, the TPS61054YZGR detects loss of current regulation and activates its secondary voltage-control loop, clamping VOUT to 6.0 V (typical) to prevent overvoltage damage to downstream circuitry. This behavior is documented in Section 9.4.2 (LED Failure Modes) and verified in Electrical Characteristics tables under OVP parameters. The device continues to monitor the LED pin but disables current regulation until fault clearance.

Can the TPS61054YZGR operate as a standalone voltage regulator?

Yes, the TPS61054YZGR can operate as a standalone voltage regulator by setting MODE0 = 1 and MODE1 = 1. In this configuration, it regulates VOUT to 5.0 V ±3% across loads up to 1 A, with efficiency peaking at 96%. The device maintains full protection features-including overtemperature shutdown, input UVLO, and output overvoltage protection-regardless of operating mode, as confirmed in Sections 9.3.1 and 10.2.1 of the datasheet.

What is the thermal resistance of the TPS61054YZGR in its DSBGA package?

The TPS61054YZGR in the YZG (DSBGA) package has a junction-to-ambient thermal resistance (R_θJA) of 82.0°C/W, and a junction-to-board thermal resistance (R_θJB) of 35.0°C/W, as specified in Section 7.4 of the SLUS760B datasheet. These values assume standard JEDEC 2-layer board conditions; actual performance improves with enhanced PCB copper area and thermal vias connecting the bottom thermal pad to internal ground planes.