ROHM BD4932FVE User Guide
Summary
These high-accuracy voltage detector ICs are designed to monitor power rails and trigger precise system reset signals for logic circuits. Ideal for engineers designing microcontroller or embedded systems, they feature ultra-low current consumption (e.g., $0.9 \mu\text{A}$) and boast a wide operating temperature range ($\text{-}40^{\circ}\text{C}$ to $+105^{\circ}\text{C}$). The manual details the full lineup of options, allowing selection based on required detection voltage (2.3V–6.0V) and necessary output type: N-channel open drain or CMOS.
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Datasheet
Voltage Detector IC Series
Standard CMOS Voltage Detector IC BD48xxx series BD49xxx series ●General Description ●Key Specifications ROHM’s BD48xxx and BD49xxx series are highly Detection voltage: 2.3V to 6.0V (Typ.), accurate, low current consumption reset IC series. The 0.1V steps line up includes BD48xxx devices with N channel open High accuracy detection voltage: ±1.0% drain output and BD49xxx devices with CMOS output. Ultra-low current consumption: 0.9μA (Typ.) The devices are available for specific detection voltages
Operating temperature range: -40°C to +105°C
ranging from 2.3V to 6.0V in increments of 0.1V.
●Package SSOP5: 2.90mm x 2.80mm x 1.15mm
●Features
SSOP3: 2.90mm x 2.80mm x 1.15mm
High accuracy detection
VSOF5: 1.60 mm x 1.60mm x 0.60mm
Ultra-low current consumption Two output types (Nch open drain and CMOS output)
●Applications
Wide Operating temperature range
Circuits using microcontrollers or logic circuits that
Very small and low height package
require a reset.
Package SSOP5 is similar to SOT-23-5 (JEDEC) Package SSOP3 is similar to SOT-23-3 (JEDEC)
●Typical Application Circuit
V DD1 VDD2
Micro BD49xxx Micro RST
BD48xxx R ST controller
controller
( Capacitor for
noise filtering ） ( Capacitor for noise filtering）
(Open Drain Output type） (CMOS Output type） BD48xxx series BD49xxx series
○Product structure:Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays.
www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ02201-0R7R0G300030-1-2 TSZ22111･14･001 1/13 08.JUL.2012.Rev.006
Page Summary Contents For ROHM BD4932FVE User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 16 |
| File Size | 493.28 KB |
| Published | June 22, 2026 |
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Frequently Asked Questions
What is the operating temperature range for these voltage detectors?
The devices operate across a wide temperature range of -40°C to +105°C.
What are the key differences between the BD48xxx and BD49xxx series?
BD48xxx has an N channel open drain output, while BD49xxx offers a CMOS output.
How accurately do these ICs detect voltage variations?
The devices feature high accuracy detection voltages of ±1.0%.
What are the available physical packages for these components?
They are available in SSOP5, SSOP3, and VSOF5 packages.