AP5002 is a PWM control 2A step-down converter which provides low-ripple power, high efficiency and excellent transient characteristics. The converter also contains an error amplifier circuit as well as a soft-start circuit that prevents overshoot at startup. An enable function, an over current protect function and a short circuit protect function are built inside, and when OCP or SCP happens, the operation frequency will be reduced from 500KHz to 50KHz. Also, an internal compensation block is built in to minimum external component count.
The AP5002 is a PWM‑controlled 2 A step‑down switching regulator designed for portable devices and AC‑adapter powered applications. It operates from 3.6 V to 20 V input and provides adjustable output voltages down to 0.8 V.
Key features include up to 100 % duty cycle, 500 kHz typical switching frequency, 90 % efficiency, internal P‑channel MOSFET, soft‑start, enable, thermal shutdown, over‑current and short‑circuit protection, and low‑ESR output capacitor support.
| Input voltage range | 3.6 V to 20 V |
|---|---|
| Output voltage range | 0.8 V to Voc |
| Maximum output current | 2 A |
| Typical switching frequency | 500 kHz |
| Efficiency | 90 % |
| Soft‑Start time | 3 ms |
| Thermal shutdown temperature | 140 °C |
The device operates from 3.6 V up to 20 V input.
It can deliver up to 2 A of output current.
The typical oscillation (switching) frequency is 500 kHz.