The DS1836 MicroManager is a power management chip launched by Microchip. It can provide 5V or 3.3V power-on reset and switch to battery power at 3.8V (2.6V for 3.3V versions). It can also force reset during power transients and maintain reset for 350ms after VCC returns to an in-tolerance condition. The DS1836 uses a precision temperature-compensated voltage reference and voltage sensor, with 8-pin DIP and 8-pin SO surface mount packages. It is perfect for PIC microprocessor applications.
The DS1836 series provides power‑on reset, power‑switching between VCC and a backup battery, and a non‑maskable interrupt for early power‑fail warning. It supports 5 V or 3.3 V systems, offers CMOS reset output, and includes a precision temperature‑compensated voltage reference.
The device is available in 8‑pin DIP or SO packages and operates from –40 °C to +85 °C. Detailed electrical characteristics, timing diagrams, and absolute‑maximum ratings are provided for designers.
| Supply Voltage VCC | 1.2 V – 5.5 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Output Current @ 0.4 V (IOL) | +10 mA |
| Reset Active Time | 200 ms – 500 ms |
| NMI Input Trip Point (VTP) | 1.15 V – 1.35 V |
The reset remains active for 200 ms to 500 ms after power‑on before being released.
The NMI is triggered when the sense input voltage drops below the trip point of about 1.25 V (range 1.15 V – 1.35 V).
The pins may tolerate –0.5 V to +7.0 V relative to ground.