Texas Instruments TPS62660YFFR

Overview

TPS62660YFFR from Texas Instruments is a 6-MHz synchronous step-down DC-DC converter in a 6-pin DSBGA package, delivering up to 1000 mA at 1.8 V output with ±2% DC accuracy, 91% peak efficiency, and 31 µA quiescent current-designed for Li-ion–powered portable devices requiring ultra-small footprint and high light-load efficiency.

For engineers reviewing the TPS62660YFFR datasheet, TPS62660YFFR pinout, TPS62660YFFR application, or TPS62660YFFR equivalent, key selection considerations include its regulated 6-MHz switching frequency, automatic PFM/PWM mode transition, integrated active power-down sequencing, 2.3–5.5 V input range, and sub-12 mm² total solution size with only three external components.

Technical Context

The TPS62660YFFR employs a frequency-locked ring-oscillating modulator architecture-eliminating traditional loop compensation-to achieve instantaneous transient response and inherent stability across varied inductor (0.3–1.3 µH) and output capacitor (4.7–10 µF) values. It operates in regulated PWM mode above ~100 mA and transitions seamlessly to low-ripple PFM mode below that threshold.

Its MODE pin selects between auto-switching (PFM at light load, PWM at heavy load) and forced-PWM operation for noise-sensitive systems; EN enables soft-start with <120 µs startup time and <0.25 µA shutdown current; FB senses output via internal 480 kΩ divider; and integrated thermal shutdown (140°C) and overcurrent protection ensure robust operation in compact battery-powered layouts.

Key Specifications

Pinout & Package

TPS62660YFFR uses a 6-pin wafer-level chip-scale package (DSBGA, YFF), measuring 1.30 mm × 0.93 mm with 0.4-mm pitch. The bottom-side ball layout supports minimal PCB area usage and efficient thermal conduction through the GND balls.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar step-down converter applications.

Compared with TPS62661YFFR, the TPS62660YFFR trades slightly slower startup for identical efficiency, accuracy, and footprint-making it preferred for non-time-critical portable loads. Against TPS62086RRLR, the TPS62660YFFR delivers better efficiency in half the board area but at fixed 1.8 V and 1-A limit.

Availability

TPS62660YFFR is available at Aetrix Electronics and suitable for smartphone power management, wearable sensor hubs, portable medical monitors, and Bluetooth LE audio earbuds requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS62660YFFR 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 ICs, with decades of expertise in high-efficiency DC-DC conversion for portable electronics.

The TPS6266x product line was engineered specifically for ultra-thin, battery-powered mobile devices-prioritizing minimal solution size, best-in-class light-load efficiency, and seamless PFM/PWM transition without external compensation.

FAQ

What is the maximum output current capability of the TPS62660YFFR?

The TPS62660YFFR delivers up to 1000 mA of continuous output current at 1.8 V under recommended operating conditions (VIN = 2.3–5.5 V, TA = –40°C to 85°C). This rating is validated with a 0.47-µH inductor and 4.7-µF output capacitor, and includes built-in current limiting and thermal shutdown protection to prevent damage during overload events. The TPS62660YFFR maintains regulation across this full range without derating.

Does the TPS62660YFFR require external feedback resistors to set the 1.8-V output?

No, the TPS62660YFFR does not require external feedback resistors. It features an internally trimmed feedback divider network with 480 kΩ resistance, configured to deliver a precise 1.8-V output. The FB pin connects directly to the output node, eliminating resistor placement, tolerance errors, and board space-critical for miniaturized portable designs where the TPS62660YFFR is commonly deployed.

How does the MODE pin affect the operation of the TPS62660YFFR?

The MODE pin on the TPS62660YFFR selects between two operating modes: when pulled low (GND), the device automatically switches between PFM (light load) and PWM (heavy load); when pulled high (VI), it forces fixed-frequency 6-MHz PWM operation regardless of load. This enables deterministic EMI behavior for noise-sensitive circuits like audio codecs or RF receivers-without altering the TPS62660YFFR's efficiency or regulation accuracy.

What is the typical startup time for the TPS62660YFFR, and what factors influence it?

The TPS62660YFFR has a typical startup time of 120 µs from EN assertion to regulated 1.8-V output under no-load conditions. This value increases with larger output capacitance or heavier load current, as the internal soft-start circuit progressively ramps the ON-time until regulation is achieved. Startup time is also affected by input voltage level and inductor value-lower VIN or higher L extends the ramp duration, as confirmed in the TPS62660YFFR's electrical characteristics table.

Can the TPS62660YFFR actively discharge its output capacitor during shutdown?

Yes, the TPS62660YFFR integrates an active output discharge function via an internal 15-Ω resistor connected between VOUT and GND. When the EN pin is pulled low, this resistor safely discharges the output capacitor, preventing residual voltage from interfering with system reset sequencing or causing latch-up in downstream logic. Discharge time depends on output capacitance-e.g., a 4.7-µF capacitor discharges to <100 mV in approximately 70 µs-verified in TI's TPS62660YFFR application notes.