BU4321F-TR ROHM

Datasheet Voltage Detector IC Series Low Voltage Free Delay Time Setting CMOS Voltage Detector IC Series BU42xx series BU43xx series General Description Key Specifications ROHMs BU42xx and BU43xx series are CMOS Voltage Detection voltage: 0.9V to 4.8V (Typ.) Detector ICs with adjustable output delay. It is a 0.1V steps high-accuracy, low current consumption Voltage Detector High accuracy detection voltage: 1.0% IC series with a built-in delay circuit. The lineup was established with two output types (Nch open drain and Ultra-low current consumption: 0.55A (Typ.) CMOS output) and detection voltages range from 0.9V to Operating temperature range: -40C to +125C 4.8V in increments of 0.1V, so that the series may be Package selected according to application. SSOP5: 2.90mm x 2.80mm x 1.25mm Features Delay Time Controlled by external Capacitor SOP4: 2.00mm x 2.10mm x 0.95mm Two output types (Nch open drain and CMOS output) Ultra-low current consumption VSOF5: 1.60mm x 1.60mm x 0.60mm Wide operating temperature range Very small and low height package Applications Package SSOP5 and SOP4 is similar to SOT-23-5 Circuits using microcontrollers or logic circuits that require and SC-82 respectively (JEDEC) a reset. Typical Application Circuit VDD1 VDD1 VDD2 RL Micro BU43xx RST controller Micro RST BU42xx controller CIN CT CIN CT CL CL (Capacitor for noise filtering) (Capacitor for noise filtering) GND GND Open Drain Output type CMOS Output type BU42xx series BU43xx series Connection Diagram & Pin Descriptions SSOP5 SOP4 VSOF5 VOUT CT CT N.C. TOP VIEW TOP VIEW TOP VIEW GND VDD 4 3 5 4 Lot. No Lot. No Marking Marking 1 2 3 Lot. No Marking VOUT SUB CT 1 2 VOUT VDD GND GND VDD PIN PIN PIN Symbol Function Symbol Function Symbol Function No. No. No. 1 VOUT Reset output 1 GND GND 1 VOUT Reset output 2 VDD Power supply voltage 2 VDD Power supply voltage 2 SUB Substrate* Capacitor connection Capacitor connection 3 GND GND 3 CT terminal for output 3 CT terminal for output delay time delay time 4 N.C. Unconnected terminal 4 VOUT Reset output 4 VDD Power supply voltage Capacitor connection 5 CT 5 GND GND terminal for output delay time *Connect the substrate to VDD Product structure Silicon monolithic integrated circuit This product is not designed for protection against radioactive rays .w ww.rohm.com TSZ02201-0R7R0G300050-1-2 2014 ROHM Co., Ltd. All rights reserved. 1/13 TSZ2211114001 11.Dec.2020 Rev.009 BU42xx series BU43xx series Ordering Information B U x x x x x - T R Part Output Type Reset Voltage Value Package Packaging and Number 42 : Open Drain 09 : 0.9V G : SSOP5 forming specification 43 : CMOS 0.1V step F : SOP4 TR : Embossed tape 48 : 4.8V FVE : VSOF5 and reel www.rohm.com TSZ02201-0R7R0G300050-1-2 2014 ROHM Co., Ltd. All rights reserved. 2/13 TSZ2211115001 11.Dec.2020 Rev.009