BU45K232G-TL Datasheet, PDF (1/17 Pages) Rohm – Counter Timer Built-in CMOS Voltage Detector IC

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
VDD1
V DD2
V DD1
BU45 xxxxx
RL
Micro
RST _controller
BD46 xxxxx
Micro
RST _controller
CL
（Noise-filtering
Capacitor）
GND
（Open Drain Output Type）
BU45xxxxx series
●Connection Diagram
SSOP3
VDD
3
GND
3
TOP VIEW
1
GND
2
VOUT
BU45KxxxG
BU46KxxxG
1
VOUT
2
VDD
BU45LxxxG
BU46LxxxG
GND
CL
（Noise-filtering
Capacitor）
（CMOS Output Type）
BU46xxxxx series
●Pin Descriptions
BU45KxxxG / BU46KxxxG
PIN No. Symbol
Function
1
GND
GND
2
VOUT
Reset Output
3
VDD
Power Supply Voltage
BU45LxxxG / BU46LxxxG
PIN No. Symbol
1
VOUT
2
VDD
3
GND
Function
Reset Output
Power Supply Voltage
GND
○Product structure：Silicon monolithic integrated circuit ○This product is not designed for protection against radioactive rays.
www.rohm.com © 2013 ROHM Co., Ltd. All rights reserved.
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TSZ02201-0R7R0G300130-1-2
17.May.2013 Rev.003