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BU45K424 データシート(PDF) 1 Page - Rohm

部品番号 BU45K424
部品情報  Counter Timer Built-in CMOS Voltage Detector IC
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メーカー  ROHM [Rohm]
ホームページ  http://www.rohm.com
Logo ROHM - Rohm

BU45K424 データシート(HTML) 1 Page - Rohm

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TSZ02201-0R7R0G300130-1-2
TSZ22111
14
001
1/14
17.May.2013 Rev.003
Datasheet
Voltage Detector IC Series
Counter Timer Built-in
CMOS Voltage Detector IC
BU45Kxxxx, BU46Kxxxx, BU45Lxxxx, BU46Lxxxx series
General Description
ROHM’s BU45xxxxx and BU46xxxxx series are highly
accurate, low current consumption voltage detector IC
series. Because the counter timer delay circuit is built-in,
an external capacitor for the delay time setting is
unnecessary. Two output types are available (Nch open
drain and CMOS output) and detection voltages range
from 2.3V to 4.8V in increments of 0.1V with fixed delay
time of 200ms and 400ms, that may be selected
according to application.
Features
Counter Timer Built-in
No delay time setting capacitor required
Low current consumption
Two output types (Nch open drain and CMOS output)
Package SSOP3 is similar to SOT-23-3 (JEDEC)
Key Specifications
Detection voltage:
2.3V to 4.8V (Typ.)
0.1V steps
High accuracy detection voltage:
±1.0%
Low current consumption:
2.3µA (Typ.)
Operating temperature range:
-40°C to +105°C
Two internal, fixed delay time:
200ms
400ms
Package
SSOP3
2.92mm x 2.80mm x 1.25mm
Applications
Circuits using microcontrollers or logic circuits that require
a reset
Typical Application Circuit
Connection Diagram
Pin Descriptions
BU45KxxxG / BU46KxxxG
BU45LxxxG / BU46LxxxG
PIN No.
Symbol
Function
1
GND
GND
2
VOUT
Reset Output
3
VDD
Power Supply Voltage
PIN No.
Symbol
Function
1
VOUT
Reset Output
2
VDD
Power Supply Voltage
3
GND
GND
Open Drain Output Type
BU45xxxxx series
CMOS Output Type
BU46xxxxx series
Product structure
Silicon monolithic integrated circuit
This product is not designed for protection against radioactive rays.
VDD1
VDD2
GND
BU45 xxxxx
CL
Noise-filtering
Capacitor
RL
RST
Micro
controller
TOP VIEW
SSOP3
BU45K
xxx
xxx
xxx
xxx
G
BU46K
xxx
xxx
xxx
xxx
G
1
2
3
VOUT
VDD
GND
CL
Noise-filtering
Capacitor
VDD1
GND
BD46 xxxxx
RST
Micro
controller
BU45L
xxx
xxx
xxx
xxx
G
BU46L
xxx
xxx
xxx
xxx
G
1
2
3
GND
VOUT
VDD


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