Datasheet
Voltage Detector IC Series
Counter Timer Built-in
CMOS Voltage Detector IC
BD45xxx series BD46xxx series
●Key Specifications
Detection voltage:
●General Description
2.3V to 4.8V (Typ.)
0.1V steps
±1.0%
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.
High accuracy detection voltage:
Ultra-low current consumption:
Operating temperature range:
Three internal, fixed delay time:
0.85µA (Typ.)
-40°C to +105°C
50ms
100ms
200ms
●Package
SSOP5
2.90mm x 2.80mm x 1.25mm
●Features
Counter Timer Built-in
●Applications
No delay time setting external capacitor required
Ultra-low current consumption
Circuits using microcontrollers or logic circuits that
require a reset.
Two output types (Nch open drain and CMOS output)
Package SSOP5 is similar to SOT-23-5 (JEDEC)
●Typical Application Circuit
VDD1
VDD2
VDD1
RL
Micro
controller
Micro
controller
BD46xxx
RST
BD45xxx
RST
CL
CL
(Noise-filtering
Capacitor)
(Noise-filtering
Capacitor)
GND
GND
(Open Drain Output Type)
(CMOS Output Type)
BD45xxx series
BD46xxx series
●Connection Diagram
●Pin Descriptions
SSOP5
VDD
VOUT
PIN No.
Symbol
ER
Function
1
2
3
4
5
Manual Reset
Substrate *
SUB
GND
VOUT
VDD
GND
TOP VIEW
Reset Output
Power Supply Voltage
Lot. No
Marking
ER SUB GND
*Connect the substrate to GND.
○Product structure:Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays
.www.rohm.com
TSZ02201-0R7R0G300010-1-2
18.Dec.2012 Rev.005
© 2012 ROHM Co., Ltd. All rights reserved.
1/13
TSZ22111・14・001