The AMS2026 is a dual power distribution switch intended for applications where heavy capacitive loads and short-circuits are likely to be encountered. The high-side switch is a 110mΩ N-channel MOSFET. The switch is controlled by a logic enable input compatible with 3V and 5V logic and is available in active-high or active-low enable. The internal charge pump, designed to control the power switch rise and fall time to minimize current surges during switching, also provides the gate drive. Requiring no external components the charge pump allows operation from supplies as low as 3.3V. When an overload or a short circuit is encountered the AMS2026 limits the output current to a safe level by switching into a constant-current mode and the overcurrent logic output error flag is set to a low. Continuous heavy overload will cause the power to shut off and the switch to overheat, turning off the switch.
The AMS2026 dual power distribution switch from Advanced Monolithic Systems provides high‑side switching for heavy capacitive loads and short‑circuit conditions. It features short‑circuit, over‑current, thermal protection and an undervoltage lock‑out, with a charge pump that enables operation from as low as 3.0 V.
The device is supplied in 8‑lead SOIC and 8‑lead PDIP packages and is suited for USB power management, hot‑plug power supplies and battery‑charger circuits. Recommended operating conditions include a 4.0 V to 5.5 V input range and a continuous output current up to 0.6 A.
| Maximum On‑State Supply Current | 100 A |
|---|---|
| On‑State Resistance | 110 mΩ typical |
| Input Voltage Range | -0.3 V to 7 V |
| Continuous Output Current | 0.6 A |
| Operating Junction Temperature Range | -40 °C to +125 °C |
| Package Types | 8‑lead SOIC / 8‑lead PDIP |
The AMS2026 operates with an input voltage from –0.3 V up to 7 V.
It provides short‑circuit protection, over‑current protection, thermal protection, and an undervoltage lock‑out that keeps the switch off at start‑up.
The enable input accepts both TTL and CMOS logic levels; a logic high disables the switch while a low level enables it.