PT4201 is a current-mode high brightness LED driver controller from Micro-Bridge. It can drive 1W to 30W lighting or spotlight and has the advantages of high current accuracy, simple peripheral circuits, no flicker and low EMI radiation.
The PT4201 LED driver supports 1 W to 30 W output power and provides constant‑current regulation with low EMI and high efficiency. It includes over‑current (OCP), over‑voltage (OVP) and undervoltage lock‑out (UVLO) protections, and can be driven by an external PWM signal.
The device is supplied in a 6‑lead SOT‑23‑6 package, operates from a VDD range of 10 V‑30 V (up to 37 V absolute maximum), and features a programmable oscillator (Rosc) for setting the PWM frequency. Detailed pin definitions, electrical characteristics, and typical application circuits are provided in the datasheet. This manual is written in Chinese.
| Operating Voltage (VDD) | 10 V‑30 V (typical), 37 V max |
|---|---|
| Output Current Range | 1 W‑30 W (≈10 mA‑300 mA depending on LED) |
| Oscillator Resistance (Rosc) | 100 kΩ |
| Thermal Resistance (RθJA) | 250 °C/W |
| ESD Protection | 2500 V |
The PT4201 operates from 10 V to 30 V typical input voltage, with an absolute maximum of 37 V.
The device is supplied in a 6‑lead SOT‑23‑6 package.