The ADP1864 is a compact, inexpensive, constant-frequency, current-mode, step-down dc-to-dc controller. It has a wide input voltage range and output voltage range, and features high efficiency, internal soft start, low dropout voltage, etc.
The ADP1864 is a compact, constant‑frequency, current‑mode step‑down DC‑DC controller that drives an external P‑channel MOSFET to regulate output voltages as low as 0.8 V with ±1.25 % accuracy for loads up to 5 A. It operates from a wide input range of 3.15 V to 14 V and is suited for wireless devices, battery‑powered applications, set‑top boxes, processor core supplies and hard‑disk drives.
Key features include up to 94 % efficiency, internal soft‑start, 100 % duty cycle for low dropout, shutdown supply current of 7 pA, quiescent current of 235 pA, and protection against short‑circuit, over‑voltage and undervoltage. The device works from –40 °C to +125 °C and is offered in a 6‑lead TSOT package.
| Input Voltage Range | 3.15 V to 14 V |
|---|---|
| Output Voltage Range | 0.8 V to input voltage |
| Maximum Output Current | 5 A |
| Efficiency | up to 94 % |
| Shutdown Supply Current | 7 pA |
| Quiescent Supply Current | 235 pA |
| Operating Frequency | 580 kHz |
| Operating Temperature Range | –40 °C to +125 °C |
| Package | 6‑lead TSOT |
The ADP1864 accepts an input voltage from 3.15 V up to 14 V.
The device can achieve up to 94 % efficiency.
It is supplied in a 6‑lead TSOT package.