Datasheet
Voltage Detector IC Series
Counter Timer Built-in
CMOS Voltage Detector IC
BD45xxx series BD46xxx series
Key Specifications
General Description
Detection voltage: 2.3V to 4.8V (Typ.)
ROHMs BD45xxx and BD46xxx series are highly
0.1V steps
accurate, low current consumption Voltage Detector ICs.
High accuracy detection voltage: 1.0%
Because the counter timer delay circuit is built into
Ultra-low current consumption: 0.85A (Typ.)
these series, an external capacitor for the delay time
Operatin g temperature range: -40C to +105C
setting is unnecessary. The lineup was established with
Three internal, fixed delay time: 50ms
low output types (Nch open drain and CMOS output)
100ms
and detection voltages range from 2.3V to 4.8V in
200ms
increments of 0.1V, so that the series may be selected
Package
according the application at hand.
SSOP5 2.90mm x 2.80mm x 1.25mm
Features
Count er Timer Built-in
Applications
No delay time setting ex ternal capacitor required
Circuits using microcontrollers or logic circuits that
Ultra-low current consumption
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
Micro
BD46xxx
RST
BD45xxx
RST controller
controller
CL
CL
Noise-filtering
Noise-filtering
Capacitor
Capacitor
GND
GND
Open Drain Output Type
CMOS Output Type
BD45xxx series
BD46xxx series
Connection Diagram Pin Descriptions
SSOP5
VDD VOUT
PIN No. Symbol Function
1 ER Manual Reset
2 SUB Substrate *
3 GND GND
TOP VIEW
4 VOUT Reset Output
Lot. No
Marking
5 VDD Power Supply Voltage
ER SUB GND
*Connect the substrate to GND.
Product structureSilicon monolithic integrated circuit This product is not designed for protection against radioactive rays
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TSZ02201-0R7R0G300010-1-2
2013 ROHM Co., Ltd. All rights reserved.
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TSZ2211114001 15.Nov.2013 Rev.007DatasheetDatasheet
BD45xxx series BD46xxx series
Ordering Information
B D xxxx x x - T R
Part Output Type Reset Voltage Value Counter Timer Package Packaging and
Number 45 : Open Drain 23 : 2.3V Delay Time Settings G : SSOP5 forming specification
46 : CMOS 0.1V step 5 : 50ms TR : Embossed tape
48 : 4.8V 1 : 100ms and reel
2 : 200ms
SSOP5
<Tape and Reel information>
+
2.90.2 6
4
Tape Embossed carrier tape
4
5 4
Quantity 3000pcs
TR
Direction
The direction is the 1pin of product is at the upper right when you hold
of feed
()
reel on the left hand and you pull out the tape on the right hand
12 3
1pin
+0.05
0.13
0.03
S
+0.05
0.42
0.04
0.95
0.1 S
Direction of feed
Reel
(Unit : mm) Order quantity needs to be multiple of the minimum quantity.
Lineup
Table 1. Open Drain Output Type
Counter Timer Delay Time Settings
50ms 100ms 200ms
Detection Part Part Part
Marking Marking Marking
Voltage Number Number Number
T0 BD45485 TS BD45481 UJ BD45482
4.8V
T1 BD45475 TT BD45471 UK BD45472
4.7V
4.6V T2 BD45465 TU BD45461 UL BD45462
T3 BD45455 TV BD45451 UM BD45452
4.5V
T4 BD45445 TW BD45441 UN BD45442
4.4V
4.3V T5 BD45435 TX BD45431 UP BD45432
T6 BD45425 TY BD45421 UQ BD45422
4.2V
4.1V T7 BD45415 TZ BD45411 UR BD45412
T8 BD45405 U0 BD45401 US BD45402
4.0V
T9 BD45395 U1 BD45391 UT BD45392
3.9V
TA BD45385 U2 BD45381 UU BD45382
3.8V
TB BD45375 U3 BD45371 UV BD45372
3.7V
3.6V TC BD45365 U4 BD45361 UW BD45362
TD BD45355 U5 BD45351 UX BD45352
3.5V
TE BD45345 U6 BD45341 UY BD45342
3.4V
TF BD45335 U7 BD45331 UZ BD45332
3.3V
TG BD45325 U8 BD45321 V0 BD45322
3.2V
3.1V TH BD45315 U9 BD45311 V1 BD45312
TJ BD45305 UA BD45301 V2 BD45302
3.0V
TK BD45295 UB BD45291 V3 BD45292
2.9V
2.8V TL BD45285 UC BD45281 V4 BD45282
TM BD45275 UD BD45271 V5 BD45272
2.7V
2.6V TN BD45265 UE BD45261 V6 BD45262
TP BD45255 UF BD45251 V7 BD45252
2.5V
TQ BD45245 UG BD45241 V8 BD45242
2.4V
TR BD45235 UH BD45231 V9 BD45232
2.3V
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TSZ02201-0R7R0G300010-1-2
2013 ROHM Co., Ltd. All rights reserved.
2/13
TSZ2211115001 15.Nov.2013 Rev.007
1.25Max.
2.80.2
1.10.05
+0.2
1.6
0.1
0.050.05
0.2Min.