component
TPS61165
Public Made by Adomby adom
TI white-LED boost driver, SOT-23-6. Drives a series LED string to 38 V, 1-wire dimming. Datasheet-verified.
3D Model
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Symbol & Footprint
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Datasheet
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README
markdownTPS61165
Texas Instruments · LED driver · SOT-23-6
Boost converter built to drive a string of white LEDs at constant current, the classic backlight driver. It steps a 3 to 5.5 V input up to as much as 38 V to push current through several LEDs in series, holding the current constant so brightness stays even, and a single CTRL pin dims the string either by a simple PWM or by TI's EasyScale one-wire digital protocol. External FB and COMP set the current and loop. A compact backlight and indicator-string driver.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | power_in | Input supply pin for the IC. Connect to a 3-V to 18-V supply with a ≥ 1 µF bypass capacitor. UVLO rising ~2.5 V with 70 mV hysteresis. |
| 2 | CTRL | input | Multifunction control pin for enable, one-wire EasyScale digital dimming, and PWM dimming (5 kHz-100 kHz). Logic high ≥ 1.2 V, logic low ≤ 0.4 V; internal 800-kΩ pull-down. Holding low > 2.5 ms shuts the device down. |
| 3 | SW | power_out | Switching node of the internal 40-V N-channel MOSFET (RDS(on) = 0.3 Ω typ, ILIM = 1.2 A). Connect the switched side of the boost inductor here; also senses output voltage for 38-V open-LED protection. |
| 4 | GND | power_in | Device ground return. Also the reference for the thermal pad, which should be soldered to the analog ground plane. |
| 5 | COMP | output | Output of the transconductance error amplifier. Connect an external capacitor (e.g. 220 nF) to compensate the loop; Gea = 320 umho typ, Rea = 6 MΩ. |
| 6 | FB | input | Feedback pin for LED current sensing. Connect the sense resistor (Rset) from FB to GND; regulated feedback voltage is 200 mV (typ, 2% accuracy). |
Key specifications
| Parameter | Value |
|---|---|
| Type | White-LED boost driver (constant current) |
| Input | 3-5.5 V |
| Output | Up to 38 V (LED string) |
| Dimming | PWM or EasyScale 1-wire (CTRL) |
| Switch | Integrated |
| Current set | External (FB) |
| Package | SOT-23-6 |
Ordering variants
Same part, different packaging or reel option.
TPS61165DBVR (SOT-23-6)TPS61165DBVT (SOT-23-6, small reel)
CAD (KiCad official)
- Symbol:
Driver_LED:TPS61165DBV (KiCad official) - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6 (KiCad packages3D, STEP)
- 3D model files:
tps61165-etched.step/tps61165-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);tps61165.step/tps61165.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (38 pp, sha256
d3515134b3388868, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).