Texas Instruments TPS61390RTER

Mfr. Part

TPS61390RTER

Manufacturer

Luminary Micro/Texas Instruments

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Detailed Description

High-voltage boost (step-up) DC/DC switching regulator. Takes a 2.5 V to 5.5 V input and generates an adjustable positive output from 20 V up to 85 V. Single output, non-synchronous architecture operating at 700 kHz for compact external components. Packaged in a 16‑pin WQFN (3 x 3 mm) with an exposed thermal pad. RoHS3 compliant and rated for -40°C to +125°C junction temperature.

Key Features

Input voltage range: 2.5 V to 5.5 V (battery or USB friendly)

Output voltage range: adjustable 20 V to 85 V (positive)

Topology: Boost (step-up)

Output configuration: 1 output, adjustable

Switching frequency: 700 kHz for small inductor/capacitors

Rectification: Non-synchronous (use external Schottky diode)

Mounting: Surface-mount, 16‑WQFN (3 x 3 mm) with exposed pad

Operating temperature: -40°C to +125°C (TJ)

Compliance: RoHS3

Packaging: Tape & Reel (TR)

Base product family: TPS61390

Key Advantages

Wide output range up to 85 V covers demanding sensor bias and high-voltage rails

Works from low-voltage sources (single-cell Li‑ion, 3.3 V rails, USB 5 V)

700 kHz switching helps minimize solution size and cost

Exposed thermal pad improves heat spreading for robust thermal performance

Simple design flow with adjustable feedback for precise output setting

Non-synchronous design can reduce EMI complexity and ease stability tuning

Packaging

Tape & Reel (TR)

Base product family: TPS61390

Key Advantages

Wide output range up to 85 V covers demanding sensor bias and high-voltage rails

Works from low-voltage sources (single-cell Li‑ion, 3.3 V rails, USB 5 V)

700 kHz switching helps minimize solution size and cost

Exposed thermal pad improves heat spreading for robust thermal performance

Simple design flow with adjustable feedback for precise output setting

Non-synchronous design can reduce EMI complexity and ease stability tuning

Packaging

Type: 16‑WQFN (WFQFN) with exposed thermal pad

Material: Lead-free, RoHS3-compliant molded plastic over copper leadframe

Size: 3.0 mm x 3.0 mm body, 16 terminals plus center thermal pad

Pin configuration: 16 I/O pins around the perimeter plus a large center pad for heat and ground connection (refer to datasheet for exact pinout)

Thermal characteristics: Exposed pad must be soldered to a ground plane with thermal vias for best thermal performance; actual thermal resistance depends on PCB layout (see datasheet thermal data and layout guidance)

Electrical considerations: 700 kHz switching node, external diode and inductor required; observe recommended inductor current rating, Schottky diode voltage/current ratings, and output capacitor voltage rating per the desired VOUT and load

Shipment: Tape & Reel (TR) for automated assembly

Lifecycle

Status: Active and broadly supported as of today. Not reported as NRND or EOL based on publicly available information. Always verify current status on the TI website or with Y-IC.

Equivalent or alternative models:

- Same family/close relatives: TPS6139x variants may offer similar functionality (check TPS61391 and related options for feature/current-limit differences).

- Related TI boost regulators for lower maximum output voltage needs (not drop-in, different specs and pinouts): TPS61170/TPS61171 (up to ~38–40 V), TPS61041 (up to ~28 V), TPS55340-Q1 (higher power, different topology).

- If you need a true drop-in or a closer electrical match, contact Y-IC. We will verify pin-compatibility, performance, and availability, and propose qualified alternates.

If you cannot identify an exact equivalent, please reach out to our sales team via our website. Y-IC will quickly recommend compatible or improved options tailored to your design.

Key Application Areas

Avalanche photodiode (APD) and photodiode bias supplies

CCD/CMOS image sensor bias rails and optical modules

Industrial and medical sensor biasing that requires 20–85 V rails

Portable instruments and handheld test equipment needing compact high-voltage generation

Gas detectors, smoke/particle sensors, and environmental monitors

Biasing for PMTs and other light-sensing front-ends (low-current high-voltage rails)

General-purpose high-voltage bias generation from low-voltage sources

Datasheet

Y-IC hosts the most authoritative datasheet for TPS61390RTER on our product page. For complete electrical characteristics, pin descriptions, reference designs, and PCB layout guidance, download the datasheet directly from this page.

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