Texas Instruments TPS61060YZFR

Overview

TPS61060YZFR from Texas Instruments is a constant-current synchronous boost LED driver IC designed to power up to three white LEDs in series from a 2.7 V to 6 V input. It delivers regulated LED current via an internal 400-mA N-channel MOSFET switch, features 1-MHz fixed-frequency operation, 500-mV/250-mV selectable feedback voltage, and integrated overvoltage (14 V min) and short-circuit protection. It is used in backlighting for compact handheld displays.

For engineers reviewing the TPS61060YZFR datasheet, TPS61060YZFR pinout, TPS61060YZFR application, or TPS61060YZFR equivalent, key selection considerations include its NanoFree™ 8-ball DSBGA package, digital/PWM dual brightness control, 120.8°C/W junction-to-ambient thermal resistance, and compatibility with 220-nF minimum output capacitors in space-constrained portable designs.

Technical Context

The TPS61060YZFR implements peak-current-mode PWM control with a fixed 1-MHz switching frequency and internal loop compensation. Its synchronous rectification uses an integrated N-channel MOSFET switch (400-mA current limit) and P-channel synchronous rectifier to minimize conduction losses.

It operates exclusively in continuous conduction mode (CCM), eliminating discontinuous-mode ringing on the SW pin. Digital brightness control is implemented via a 5-bit DAC on the ILED pin, enabling 32-step regulation of feedback voltage from 250 mV to 500 mV in 15.6-mV increments - directly setting LED current without external PWM generation.

Key Specifications

Pinout & Package

TPS61060YZFR uses an 8-ball NanoFree™ wafer-chip-scale package (DSBGA), measuring 1.446 mm × 1.446 mm, with bottom-side solder balls and no exposed thermal pad. The package is optimized for minimal footprint and height in ultra-thin portable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS61061YZFR, TPS61060YZFR offers tighter 14-V OVP protection better matched to 3-LED strings, while MAX16832ETA+ trades integration for flexibility in high-current or frequency-tuned applications - making TPS61060YZFR optimal for compact, cost-sensitive, low-to-mid current portable backlighting.

Availability

TPS61060YZFR is available at Aetrix Electronics and suitable for smartphone front-camera flash modules, QVGA LCD backlights, portable medical displays, and wearable OLED indicators requiring stable component supply across production lifecycles.

Supply support for TPS61060YZFR 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 headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management technologies with over 90 years of innovation history.

The TPS6106x product line was engineered specifically for space-constrained portable LED lighting, combining high-efficiency synchronous boost conversion, dual-dimming interfaces, and robust fault protection in chip-scale packaging.

FAQ

What is the maximum number of white LEDs the TPS61060YZFR can drive?

The TPS61060YZFR is specified to drive up to three white LEDs in series. This is determined by its 14-V minimum overvoltage protection threshold and internal current regulation architecture. Driving more than three LEDs risks exceeding the OVP limit under worst-case forward voltage and temperature conditions, potentially triggering shutdown. Always verify total LED string V_F remains below 13.5 V at operating temperature when using TPS61060YZFR.

How does the ILED pin function in the TPS61060YZFR?

The ILED pin on the TPS61060YZFR controls feedback voltage selection and enables digital brightness programming. When pulled low, it disables digital control and sets V_FB = 500 mV. When pulled high, it enables a 5-bit DAC that adjusts V_FB from 250 mV to 500 mV in 15.6-mV steps via timed low pulses. This allows microcontroller-free brightness adjustment and reduces system power versus continuous PWM generation - a core capability of the TPS61060YZFR.

What package type does the TPS61060YZFR use, and what are its key mechanical attributes?

The TPS61060YZFR uses the YZF package: an 8-ball NanoFree™ wafer-chip-scale package (DSBGA) with nominal dimensions of 1.446 mm × 1.446 mm and 0.4-mm ball pitch. It has no exposed thermal pad, relies on solder-ball thermal conduction, and achieves 120.8°C/W junction-to-ambient thermal resistance. This ultra-compact, low-profile package is designed for placement in tight spaces such as under display bezels - a defining physical characteristic of the TPS61060YZFR.

Can the TPS61060YZFR operate with a 220-nF output capacitor?

Yes, the TPS61060YZFR is explicitly characterized and qualified to operate with a minimum 220-nF ceramic output capacitor, as confirmed in Section 7.3 (Recommended Operating Conditions) and Figure 2–7 (Efficiency vs LED Current). Using X5R or X7R dielectric is recommended to maintain capacitance across temperature and bias voltage. This capability significantly reduces PCB area versus traditional µF-range solutions and is a validated design feature of the TPS61060YZFR.

What protection features are integrated into the TPS61060YZFR?

The TPS61060YZFR integrates four key protections: (1) 14-V minimum overvoltage protection (OVP) to safeguard the 33-V-rated SW node; (2) advanced short-circuit protection limiting output current to ~100 mA if OUT shorts to GND; (3) undervoltage lockout (UVLO) with 1.65-V threshold to prevent malfunction below battery cutoff; and (4) thermal shutdown at ~160°C junction temperature. These are hard-wired safety functions - not configurable - and are fundamental to the TPS61060YZFR's reliability in portable applications.