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BU45K242G-TL

Description
Supervisory Circuits 2.4V 200ms SSOP3 Nch Volt Detctr IC
CategoryPower/power management    The power supply circuit   
File Size513KB,19 Pages
ManufacturerROHM Semiconductor
Websitehttps://www.rohm.com/
Environmental Compliance
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BU45K242G-TL Overview

Supervisory Circuits 2.4V 200ms SSOP3 Nch Volt Detctr IC

BU45K242G-TL Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerROHM Semiconductor
package instruction,
Reach Compliance Codecompliant
ECCN codeEAR99
Factory Lead Time13 weeks
Analog Integrated Circuits - Other TypesPOWER SUPPLY SUPPORT CIRCUIT
Humidity sensitivity level3
Peak Reflow Temperature (Celsius)260
Maximum time at peak reflow temperature10
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)
●Typical
Application Circuit
V
DD1
V
DD2
V
DD1
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° to +105°
C
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
R
L
BU45 x x x xx
R
ST
Micro
controller
BD46 xx
x
xx
R
ST
Micro
controller
C
L
Noise-filtering
Capacitor
C
L
Noise-filtering
Capacitor
GND
GND
(Open
Drain Output Type)
BU45xxxxx series
●Connection
Diagram
SSOP3
(CMOS
Output Type)
BU46xxxxx series
●Pin
Descriptions
BU45KxxxG / BU46KxxxG
PIN No.
Symbol
GND
V
OUT
V
DD
GND
Function
V
DD
GND
3
3
1
2
3
Reset Output
Power Supply Voltage
TOP VIEW
BU45LxxxG / BU46LxxxG
1
GND
2
V
OUT
1
V
OUT
2
V
DD
PIN No.
1
2
3
Symbol
V
OUT
V
DD
GND
Function
Reset Output
Power Supply Voltage
GND
BU45Kxxx
xxxG
xxx
BU46Kxxx
xxxG
xxx
BU45Lxxx
xxxG
xxx
BU46Lxxx
xxxG
xxx
○Product
structure:Silicon monolithic integrated circuit
○This
product is not designed for protection against radioactive rays.
www.rohm.com © 2014 ROHM Co., Ltd. All rights reserved.
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