The HT7886 is a high-voltage, step-down, switching regulator that delivers up to 2A of continuous current to the load. It integrates a high-side, high-voltage, power MOSFET with a current limit of 3.5A, typically. The wide 5V to 100V input range accommodates a variety of step-down applications, making it ideal for automotive, industry, and lighting applications. Hysteretic voltage-mode control is employed for very fast response. The switching frequency can be up to 1MHz, allowing for small component size. Thermal shutdown and short-circuit protection (SCP) provide reliable and fault-tolerant performance.
The HT7886 is a high‑voltage step‑down switching regulator that accepts a wide 5 V to 100 V input range and delivers up to 2 A continuous load current with a typical peak switching current limit of 3.5 A. It uses hysteretic voltage‑mode control, supports up to 1 MHz switching frequency, and includes short‑circuit protection, thermal shutdown, and a low 200 µA quiescent current for battery‑powered use. The device is offered in an ESOP‑8 package.
Typical applications include scooter and e‑bike power supplies, solar energy systems, automotive and industrial power supplies, and high‑power LED drivers. The datasheet provides pin‑out details, recommended component values, PCB layout guidelines, and design equations for setting output voltage, selecting inductors, and choosing input/output capacitors.
| Input voltage range | 5 V – 100 V |
|---|---|
| Typical peak switching current limit | 3.5 A |
| Maximum switching frequency | 1 MHz |
| Quiescent current | 200 µA |
| Package type | ESOP‑8 |
| Ambient operating temperature | -40 °C to 125 °C |
| UVLO rising threshold | ≈4.7 V |
The HT7886 operates with an input voltage from 5 V up to 100 V.
The output voltage is set by a resistor divider (R1 and R2) as described in the datasheet.