MAX893L is a high-side load switch from Maxim Integrated. It operates with input voltages from +2.7V to +5.5V and can continuously output up to 1.2A of current. The short-circuit current is limited to 1.8A. The switch features internal current-limiting circuitry and thermal overload protection.
The MAX893L is a smart, low‑voltage P‑channel MOSFET power switch intended for high‑side load‑switching applications. It operates from +2.7 V to +5.5 V and offers programmable current limiting, low quiescent current, and thermal shutdown protection.
Key features include a programmable current limit of 0.2 A to 1.2 A, 1.2 A continuous load current, 1.8 A short‑circuit current, 0.07 Ω on‑resistance, and a fault indicator output. The device is supplied in an 8‑pin SO package and is suitable for USB ports, hubs, PCMCIA slots, and other portable equipment.
| Input voltage range | +2.7 V to +5.5 V |
|---|---|
| Programmable current limit | 0.2 A to 1.2 A |
| Continuous load current | 1.2 A |
| Short‑circuit current | 1.8 A (typical) |
| On‑resistance | 0.07 Ω |
| Quiescent supply current | 13 µA at VIN=3.3 V |
| Operating temperature range | -40 °C to +85 °C |
| Package | 8‑pin SO |
The MAX893L can be programmed up to a maximum continuous current limit of 1.2 A.
The typical on‑resistance is 0.07 Ω.