This document describes a 2mm x 2mm QFN packaged white LED driver that can drive up to 10 LEDs in series. Its features include an input voltage range of 2.7V to 18V, digital and PWM brightness control, and flexible brightness control. In addition, the driver has a 200mV reference voltage, up to 90% efficiency, and built-in soft start functionality.
The TPS61160 and TPS61161 are high‑efficiency white LED boost converters offered in a compact 2 mm × 2 mm QFN package. They support an input voltage range of 2.7 V to 18 V and can drive up to ten LEDs in series, providing up to 90 % conversion efficiency. Brightness can be adjusted via a 1‑wire digital EasyScale interface or a PWM signal on the CTRL pin, and the devices include built‑in soft‑start and open‑LED protection.
The datasheet provides full electrical characteristics, absolute maximum ratings, recommended operating conditions, and layout guidelines. Key parameters such as switching frequency (600 kHz), open‑LED protection thresholds (26 V for TPS61160, 38 V for TPS61161), and thermal shutdown specifications are listed, along with typical application circuits and land‑pattern drawings for PCB design.
| Input voltage range | 2.7 V to 18 V |
|---|---|
| Open LED protection (TPS61160) | 26 V typical |
| Open LED protection (TPS61161) | 38 V typical |
| Efficiency | up to 90 % |
| Switching frequency | 600 kHz (fixed) |
| Package | 2 mm × 2 mm × 0.8 mm 6‑pin QFN |
The devices operate with an input voltage between 2.7 V and 18 V.
Both parts can drive up to ten white LEDs in series.
The typical open‑LED protection threshold for the TPS61161 is 38 V.