Datasheet
Voltage Detector IC Series
Counter Timer Built-in
CMOS Voltage Detector IC
BD45xxx series BD46xxx series
●Key Specifications
Detection voltage:
●General Description
ROHM’s BD45xxx and BD46xxx series are highly
accurate, low current consumption Voltage Detector ICs.
Because the counter timer delay circuit is built into
these series, an external capacitor for the delay time
setting is unnecessary. The lineup was established with
low output types (Nch open drain and CMOS output)
and detection voltages range from 2.3V to 4.8V in
increments of 0.1V, so that the series may be selected
according the application at hand.
●Features
Counter Timer Built-in
No delay time setting external capacitor required
Ultra-low current consumption
Two output types (Nch open drain and CMOS output)
Package SSOP5 is similar to SOT-23-5 (JEDEC)
2.3V to 4.8V (Typ.)
0.1V steps
High accuracy detection voltage:
±1.0%
Ultra-low current consumption:
0.85µA (Typ.)
Operating temperature range:
-40°C to +105°C
Three internal, fixed delay time:
50ms
100ms
200ms
●Package
SSOP5
2.90mm x 2.80mm x 1.25mm
●Applications
Circuits using microcontrollers or logic circuits that
require a reset.
●Typical Application Circuit
VDD1
VDD2
VDD1
RL
BD45xxx
RST
Micro
controller
BD46xxx
RST
CL
Micro
controller
CL
（Noise-filtering
Capacitor）
GND
（Noise-filtering
Capacitor）
GND
（Open Drain Output Type）
BD45xxx series
（CMOS Output Type）
BD46xxx series
●Connection Diagram
●Pin Descriptions
SSOP5
VDD
VOUT
PIN No.
1
ER
Substrate *
GND
GND
4
VOUT
Reset Output
5
SUB GND
SUB
3
Lot. No
Marking
ER
2
TOP VIEW
Symbol
Function
VDD
Power Supply Voltage
Manual Reset
*Connect the substrate to GND.
○Product structure：Silicon monolithic integrated circuit
.
www.rohm.com
© 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product is not designed for protection against radioactive rays
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TSZ02201-0R7R0G300010-1-2
18.Dec.2012 Rev.005
