The ISL88021 and ISL88022 are customizable triple voltage-monitoring supervisors that assert a reset if any of the monitored voltages becomes non-compliant. They offer popular functions such as Power-On-Reset timing control with both RESET and RESET outputs, Supply Voltage Supervision, both under or overvoltage detection, and Manual Reset assertion. By offering these features in a small 8 Ld MSOP package, the ISL88021 and ISL88022 can lower system cost, reduce board space requirements and increase the reliability of systems.
The ISL88021 and ISL88022 devices provide triple voltage monitoring (Vpp, V2MON, V3MON) with programmable reset thresholds, low‑voltage detection, and both active‑low and active‑high reset outputs. They include a Power‑On‑Reset circuit that holds the reset pin low until the supply stabilizes, and a manual reset input with debounce circuitry.
Typical applications include process‑control systems, intelligent instruments, embedded control, portable/battery‑powered equipment and multi‑voltage systems. The devices are supplied in an 8‑lead Mini Small Outline Plastic (MSOP) package, offering a compact footprint and RoHS‑compliant, lead‑free options.
| Supply Voltage Range (Vob) | 2.0 V – 5.5 V |
|---|---|
| Vpp Supply Current | 12.5 µA (typical) |
| V2MON Input Current | 5.5 µA (typical) |
| V3MON Input Current | 100 nA (typical) |
| Power Consumption | 20 µA |
| Reset Output Voltage Low | 0.05 V – 0.40 V at 2.5 mA sink |
| Reset Output Voltage High | Vpp‑0.6 V to Vpp‑0.4 V at 2.5 mA source |
| Package Type | 8‑lead MSOP |
| Maximum Junction Temperature | +150 °C |
| Storage Temperature Range | -65 °C to +150 °C |
It holds the RESET pin low after power is applied until Vpp exceeds 1 V, ensuring the supply and oscillator stabilize before the processor starts.
Both devices are supplied in an 8‑lead Mini Small Outline Plastic (MSOP) package.