Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Topology | Boost constant-current LED driver |
| Input | 3 V to 18 V |
| Switch | Integrated 40 V-rated FET; 1.2 A switch current |
| Frequency | 1.2 MHz fixed switching |
| Protection | 38 V open-LED protection |
| Feedback | 200 mV reference, 2% stated accuracy |
| Dimming | PWM and one-wire digital brightness control |
| Exact Package / Packing | SOT-23 (DBV), 6 pins; 3000-piece large reel |
Product Overview
TPS61165DBVR boosts a low supply to drive a series string of white/high-brightness LEDs. Series current is sensed through a low 200 mV reference, reducing resistor loss compared with higher-sense-voltage drivers.
The integrated 40 V switch and 38 V open-LED protection set a practical ceiling on total LED-string voltage. The LED count should be checked at cold/high-VF conditions, not only nominal forward voltage.
One-wire digital and PWM dimming allow brightness control without an I²C register interface, useful in simple backlight/HMI circuits.
For related devices, see HKEQGOO’s LED Drivers ICs category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | TPS61165DBVR |
| Topology | Boost constant-current LED driver |
| Input | 3 V to 18 V |
| Switch | Integrated 40 V-rated FET; 1.2 A switch current |
| Frequency | 1.2 MHz fixed switching |
| Protection | 38 V open-LED protection |
| Feedback | 200 mV reference, 2% stated accuracy |
| Dimming | PWM and one-wire digital brightness control |
| Exact Package / Packing | SOT-23 (DBV), 6 pins; 3000-piece large reel |
| Manufacturer Status | Active / Production |
| Part Marking | DAK |
Functional Highlights
Series LEDs improve current matching
All LEDs share one current path, avoiding per-channel current mismatch, while boost voltage rises with total string forward voltage.
Open-string protection is a voltage clamp, not extra operating headroom
Normal worst-case LED voltage must stay comfortably below the protection threshold so cold/startup tolerance does not repeatedly trigger OVP.
Design Considerations
- Calculate maximum cold LED-string VF against the 38 V protection level.
- Select inductor/diode for 1.2 MHz switching, peak current and input range.
- Keep FB routing quiet because 200 mV sensing is susceptible to switching-ground error.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists TPS61165DBVR as Active / Production; SOT-23 (DBV), 6 pins; 3000-piece large tape and reel; −40°C to +85°C; marking DAK.
Related Engineering Resources
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