Datasheet
Voltage Detector IC Series
Bipolar
Voltage Detector ICs
BD47xx series
●General Description
The BD47xx series is a Voltage Detector IC,
developed to prevent system errors at transient state,
when the power of CPU or logic circuit switches
ON/OFF or in cases of momentary shut down. These
ICs consist of three terminals (power supply, GND and
reset output) to detect power supply voltages and
outputs reset signals of various systems. These ICs
are ultra-compact and have low current consumption,
making them ideal for portable products.
●Key Specifications
Detection voltage range:
1.9V to 4.6V (Typ.)
0.1V steps
High accuracy detection voltage:
±1%
Low current consumption:
1.6µA (Typ.)
Operating temperature range:
-40°C to +75°C
●Package
SSOP5
2.90mm x 2.80mm x 1.25mm
●Applications
Circuits using microcontrollers or logic circuits that require
a reset.
●Features
High accuracy detection
Low current consumption
Very small package
Open collector “L” reset output
Package SSOP5 is similar to SOT-23-5 (JEDEC)
●Typical Application Circuit
VDD
VDD
RL
BD47xx series
CPU
Micro-controller
RESET
VOUT
CL
GND
●Connection Diagram
SSOP5
TOP VIEW
VDD
GND
●Pin Descriptions
○Product structure：Silicon monolithic integrated circuit
.
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© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
Unconnected Terminal
SUB
Substrate*
GND
GND
4
VOUT
Reset Output
5
SUB GND
N.C.
3
Lot. No
Function
2
Marking
Symbol
1
N.C.
PIN No.
VOUT
VDD
Power Supply Voltage
*Substrate Pin should be connected with GND
○This product is not designed for protection against radioactive rays
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TSZ02201-0R7R0G300020-1-2
18.Nov.2012 Rev.005
