BU42xx series and BU43xx series are ROHM's low voltage free delay time setting CMOS voltage detector IC series, which are high-precision, low-current reset IC series with a built-in delay circuit. The lineup was established with two output types (Nch open drain and CMOS output) and detection voltages range from 0.9V to 4.8V in increments of 0.1V, so that the series may be selected according to the application at hand.
The BU42xx and BU43xx series are CMOS reset ICs with adjustable detection voltage and built‑in delay. They are offered in two output configurations—N‑channel open‑drain and CMOS output—and are intended for use in electronic devices that employ microcontrollers and logic circuits.
Key features include a detection voltage range of 0.9 V to 4.8 V, ultra‑low current consumption of 0.55 µA typical, and operation over –40 °C to +125 °C. The devices are supplied in compact SSOP5 and SOP4 packages and include application circuits, pin‑out diagrams, and extensive electrical characteristics.
| Detection voltage range | 0.9 V to 4.8 V (typ.) |
|---|---|
| Package (SSOP5) dimensions | 2.90 mm × 2.80 mm × 1.15 mm |
The detection voltage can be set from 0.9 V to 4.8 V in 0.1 V steps.