TI TPS61165

Mfr. Part

TPS61165

Manufacturer

Luminary Micro / Texas Instruments (TI)

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Detailed Description

High-efficiency white LED driver and boost converter with integrated power switch. Designed to drive a string of high-brightness LEDs with precise constant current for LCD backlighting and general illumination. Supports wide input range, fast switching, high dimming ratio, and robust protection features. Ideal for compact, low-noise, high-brightness designs. Current stock at Y-IC: 2300 units (subject to prior sale).

Key Features

Integrated high-side switch (approx. 1.2 A current limit, typical)

Wide input voltage range (typical 2.7 V to 18 V; verify exact range in datasheet)

High switching frequency around 1.2 MHz for small external components

Low feedback reference (about 200 mV) to reduce power loss on sense resistor

Drives a long LED string in series (often up to ~8–10 white LEDs depending on Vf)

Dimming options: direct PWM dimming; analog dimming via control pin

Protections: open-LED protection, output over-voltage protection (OVP ~38–40 V typical), cycle-by-cycle current limit, soft-start, thermal shutdown

Enable/Shutdown control with very low standby current

Small footprint packages for space-constrained designs

High efficiency (often >85–90% depending on conditions)

Key Advantages

Consistent brightness with accurate LED current regulation

High dimming ratio for smooth, flicker-free brightness control

Fewer external parts than discrete solutions; lower BOM cost

Small package and 1.2 MHz switching reduce inductor/capacitor size

Robust fault handling improves end-product reliability

Suitable for battery-driven and 12 V rail systems thanks to wide VIN

Packaging

Case code per listing: 1057 (verify exact TI package suffix on the label or datasheet)

Typical physical package options for this family: SOT-23-6 (DBV) and/or small QFN/WSON variants (package availability depends on TPS61165 ordering suffix)

Shipment format: Tape & Reel for automated SMT assembly; ESD-safe, moisture-barrier bagged

Materials: RoHS-compliant, lead-free; halogen-free options available

Approximate package size (SOT-23-6 example): ~2.9 x 1.6 x 1.2 mm; QFN/WSON variants are low-profile

Pin configuration (6-pin common mapping; confirm exact pinout for your package)

• VIN – supply input

• SW – switch node to inductor/diode

• GND – ground

• FB – LED current sense feedback

• CTRL/DIM – analog/PWM dimming control

• EN – enable/shutdown

Thermal characteristics

• Junction-to-ambient thermal resistance depends on board layout and copper area (SOT-23 typically on the order of 150–250 °C/W on standard JEDEC board)

• Built-in thermal shutdown for over-temperature events

Key electrical properties (typical values; verify in datasheet)

• Input voltage: ~2.7–18 V

• Switching frequency: ~1.2 MHz

• Switch current limit: ~1.2 A

• Feedback voltage: ~200 mV

• OVP threshold: ~38–40 V

• Operating temperature: –40°C to +85°C (grade dependent)

Lifecycle

Status: Active at Texas Instruments for mainstream production use (not nearing discontinuation as of our latest check)

Equivalent/Alternative models (fit depends on your requirements; verify pinout and specs before substitution)

• TI same-family/close: TPS61160, TPS61161A, TPS61162A, TPS61163A, TPS61164A, TPS61085 (different capabilities)

• Other vendors (functional alternatives): MPS MP3302/MP3309, Richtek RT4533/RT4525, Onsemi NCP3065/NCP3066 (topology and pinout differ), Analog Devices/Linear LT1937, LT3519 (specs differ)

If you need drop-in compatibility or certified cross-references, please contact Y-IC sales on our website for tailored guidance.

Key Application Areas

LCD/LED backlighting for handhelds, tablets, e-readers, and industrial HMI panels

Portable instruments, medical handhelds, and test equipment

GPS navigators, digital cameras, and media players

General-purpose boost LED lighting in compact consumer and industrial devices

Systems needing high dimming ratio and constant current LED drive

Datasheet

Y-IC hosts the most authoritative datasheet and technical documents for TPS61165 on our product page. For exact ratings, pinouts, package options, and design examples, download the datasheet directly from our website now.

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