ROHM BD4719G User Guide
Summary
The BD47xx series is a highly accurate bipolar voltage detector IC designed to safeguard complex electronic systems by monitoring power supply voltages. This component detects transient power fluctuations (1.9V to 4.6V) and outputs a reliable reset signal, preventing system crashes when microcontrollers or logic circuits switch power on/off. Ideal for portable devices, it offers ultra-low current consumption and a compact SSOP5 package, ensuring robust protection across challenging operational environments.
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Datasheet
Voltage Detector IC Series
Bipolar Voltage Detector ICs BD47xx series ●General Description ●Key Specifications The BD47xx Series is a reset IC that was developed to Detection voltage range: 1.9~4.6V (Typ.) prevent system errors at transient state when the 0.1V steps power of CPU or logic circuit switches ON/OFF or High accuracy detection voltage: ±1% momentary shut down. These ICs consist of three Low current consumption: 1.6µA (Typ.) terminals (power supply, GND and reset output) to Operating temperature range: -40°C to +75°C detect power supply voltages and outputs reset signals of various systems. These ICs are ultra-compact and are realized low current consumption, making them
●Package
ideal for portable products.
SSOP5 2.90mm x 2.80mm x 1.15mm
●Features
●Applications
High accuracy detection
All electronic devices that use micro controllers and
Low current consumption
logic circuits
Very small package Open collector “L” reset output
●Typical Application Circuit
VDDVDD
BD47xx series RESET VOUT
Micro-controller
GND GND
●Connection Diagram ●Pin Descriptions
SSOP5 TOP VIEW PIN No. Symbol Function
VOUTVDD
1 N.C. Unconnected Terminal 2 SUB Substrate * 3 GND GND 4 VOUT Reset Output
Lot. No Marking
5 VDD Power Supply Voltage
N.C. SUB GND
*Substrate Pin should be connected with GND
○Product structure：Silicon monolithic integrated circuit ○This product is not designed protection against radioactive rays.
www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. TSZ02201-0R7R0G300020-1-2 TSZ22111･14･001 1/10 20.DEC.2011 Rev.002
Page Summary Contents For ROHM BD4719G User Guide
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 12 |
| File Size | 287.36 KB |
| Published | June 18, 2026 |
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Frequently Asked Questions
How do I select the correct detection voltage for my system?
The BD47xx series offers voltages ranging from 1.9V to 4.6V in steps of 0.1V, allowing precise matching to your power supply requirements.
What is the typical current consumption of this IC?
Under normal operation, it has a low typical current consumption of 1.6µA, making it ideal for portable products.
Which pins are used for output and power?
Pin 4 (VOUT) is the reset output pin, Pin 5 (DD) is the main power supply voltage, and GND provides ground connection.
What is the operational temperature range for this IC?
This device can operate reliably in an ambient temperature range of -40°C to +75°C.