Datasheet
Voltage Detector IC Series
Counter Timer Built-in
CMOS Voltage Detector IC
BD45xxx series BD46xxx series
●General
Description
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.
●Features
Counter Timer Built-in
No delay time setting external capacitor required
Ultra-low current consumption
Two output types (Nch open drain and CMOS output)
Package SSOP5 is similar to SOT-23-5 (JEDEC)
2.3V to 4.8V (Typ.)
0.1V steps
High accuracy detection voltage:
±1.0%
Ultra-low current consumption:
0.85µA (Typ.)
Operating temperature range:
-40°C to +105°C
Three internal, fixed delay time:
50ms
100ms
200ms
●Package
SSOP5
2.90mm x 2.80mm x 1.25mm
●Applications
Circuits using microcontrollers or logic circuits that
require a reset.
●Key
Specifications
Detection voltage:
●Typical
Application Circuit
V
DD1
R
L
BD45xxx
R
ST
Micro
controller
BD46xxx
R
ST
Micro
controller
V
DD2
V
DD1
C
L
（Noise-filtering
Capacitor）
C
L
GND
（Noise-filtering
Capacitor）
GND
（Open
Drain Output Type）
BD45xxx series
●Connection
Diagram
SSOP5
V
DD
V
OUT
PIN No.
1
2
TOP VIEW
（CMOS
Output Type）
BD46xxx series
●Pin
Descriptions
Symbol
ER
SUB
GND
V
OUT
V
DD
Function
Manual Reset
Substrate
*
GND
Reset Output
Power Supply Voltage
3
Lot. No
4
5
Marking
ER
SUB GND
*Connect the substrate to GND.
○Product
structure：Silicon monolithic integrated circuit
.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This
product is not designed for protection against radioactive rays
1/13
TSZ02201-0R7R0G300010-1-2
15.Nov.2013 Rev.007
BD45xxx series BD46xxx series
●Ordering
Information
Datasheet
B
Part
Number
D
x
x
x
x
x
x
-
T
R
Output Type
45 : Open Drain
46 : CMOS
Reset Voltage Value
23 : 2.3V
0.1V step
48 : 4.8V
Counter Timer
Package
Delay Time Settings G : SSOP5
5 : 50ms
1 : 100ms
2 : 200ms
Packaging and
forming specification
TR : Embossed tape
and reel
SSOP5
2.9±0.2
5
4
+
6
°
4
° −4°
<Tape and Reel information>
Tape
Quantity
Direction
of feed
Embossed carrier tape
3000pcs
TR
The direction is the 1pin of product is at the upper right when you hold
+0.2
1.6
−0.1
2.8±0.2
1
2
3
0.2Min.
(
reel on the left hand and you pull out the tape on the right hand
1pin
)
+0.05
0.13
−0.03
1.25Max.
S
+0.05
0.42
−0.04
0.95
0.1
S
1.1±0.05
0.05±0.05
Direction of feed
(Unit : mm)
Reel
∗
Order quantity needs to be multiple of the minimum quantity.
●Lineup
Table 1. Open Drain Output Type
Counter Timer Delay Time Settings
50ms
Detection
Voltage Marking
T0
4.8V
T1
4.7V
T2
4.6V
T3
4.5V
T4
4.4V
T5
4.3V
T6
4.2V
T7
4.1V
T8
4.0V
T9
3.9V
TA
3.8V
TB
3.7V
TC
3.6V
TD
3.5V
TE
3.4V
TF
3.3V
TG
3.2V
TH
3.1V
TJ
3.0V
TK
2.9V
TL
2.8V
TM
2.7V
TN
2.6V
TP
2.5V
TQ
2.4V
TR
2.3V
Part
Number
BD45485
BD45475
BD45465
BD45455
BD45445
BD45435
BD45425
BD45415
BD45405
BD45395
BD45385
BD45375
BD45365
BD45355
BD45345
BD45335
BD45325
BD45315
BD45305
BD45295
BD45285
BD45275
BD45265
BD45255
BD45245
BD45235
100ms
Marking
TS
TT
TU
TV
TW
TX
TY
TZ
U0
U1
U2
U3
U4
U5
U6
U7
U8
U9
UA
UB
UC
UD
UE
UF
UG
UH
Part
Number
BD45481
BD45471
BD45461
BD45451
BD45441
BD45431
BD45421
BD45411
BD45401
BD45391
BD45381
BD45371
BD45361
BD45351
BD45341
BD45331
BD45321
BD45311
BD45301
BD45291
BD45281
BD45271
BD45261
BD45251
BD45241
BD45231
200ms
Marking
UJ
UK
UL
UM
UN
UP
UQ
UR
US
UT
UU
UV
UW
UX
UY
UZ
V0
V1
V2
V3
V4
V5
V6
V7
V8
V9
Part
Number
BD45482
BD45472
BD45462
BD45452
BD45442
BD45432
BD45422
BD45412
BD45402
BD45392
BD45382
BD45372
BD45362
BD45352
BD45342
BD45332
BD45322
BD45312
BD45302
BD45292
BD45282
BD45272
BD45262
BD45252
BD45242
BD45232
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/13
TSZ02201-0R7R0G300010-1-2
15.Nov.2013 Rev.007
BD45xxx series BD46xxx series
●Lineup
- continued
Table 2. CMOS Output Type
Counter Timer Delay Time Settings
50ms
Detection
Voltage Marking
VA
4.8V
VB
4.7V
VC
4.6V
VD
4.5V
VE
4.4V
VF
4.3V
VG
4.2V
VH
4.1V
VJ
4.0V
VK
3.9V
VL
3.8V
VM
3.7V
VN
3.6V
VP
3.5V
VQ
3.4V
VR
3.3V
VS
3.2V
VT
3.1V
VU
3.0V
VV
2.9V
VW
2.8V
VX
2.7V
VY
2.6V
VZ
2.5V
W0
2.4V
W1
2.3V
Part
Number
BD46485
BD46475
BD46465
BD46455
BD46445
BD46435
BD46425
BD46415
BD46405
BD46395
BD46385
BD46375
BD46365
BD46355
BD46345
BD46335
BD46325
BD46315
BD46305
BD46295
BD46285
BD46275
BD46265
BD46255
BD46245
BD46235
100ms
Marking
W2
W3
W4
W5
W6
W7
W8
W9
WA
WB
WC
WD
WE
WF
WG
WH
WJ
WK
WL
WM
WN
WP
WQ
WR
WS
WT
Part
Number
BD46481
BD46471
BD46461
BD46451
BD46441
BD46431
BD46421
BD46411
BD46401
BD46391
BD46381
BD46371
BD46361
BD46351
BD46341
BD46331
BD46321
BD46311
BD46301
BD46291
BD46281
BD46271
BD46261
BD46251
BD46241
BD46231
200ms
Marking
WU
WV
WW
WX
WY
WZ
X0
X1
X2
X3
X4
X5
X6
X7
X8
X9
XA
XB
XC
XD
XE
XF
XG
XH
XJ
XK
Part
Number
BD46482
BD46472
BD46462
BD46452
BD46442
BD46432
BD46422
BD46412
BD46402
BD46392
BD46382
BD46372
BD46362
BD46352
BD46342
BD46332
BD46322
BD46312
BD46302
BD46292
BD46282
BD46272
BD46262
BD46252
BD46242
BD46232
Datasheet
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/13
TSZ02201-0R7R0G300010-1-2
15.Nov.2013 Rev.007
BD45xxx series BD46xxx series
Absolute maximum ratings
Parameter
Power Supply Voltage
Nch Open Drain Output
Output Voltage
CMOS Output
Output Current
ER pin Voltage
*1 *2
Power Dissipation
Operating Temperature
Ambient Storage Temperature
Datasheet
Symbol
V
DD
-GND
VOUT
I
O
VCT
Pd
Topr
Tstg
Limits
-0.3 to +10
GND-0.3 to +10
GND-0.3 to V
DD
+0.3
60
GND-0.3 to V
DD
+0.3
540
-40 to +105
-55 to +125
Unit
V
V
mA
V
mW
°C
°C
*1 Reduced by 5.4mW/°C when used over 25°C.
*2 When mounted on ROHM standard circuit board (70mm×70mm×1.6mm, glass epoxy board).
●Electrical
characteristics (Unless Otherwise Specified Ta=-40 to 105°C)
Parameter
Symbol
Condition
V
DD
=H L, R
L
=470kΩ
Ta=+25°C
VDET=2.5V
Ta=-40°C to 85°C
Ta=85°C to 105°C
Ta=+25°C
VDET=3.0V
Ta=-40°C to 85°C
Ta=85°C to 105°C
Ta=+25°C
VDET=3.3V
Ta=-40°C to 85°C
Ta=85°C to 105°C
Ta=+25°C
VDET=4.2V
Ta=-40°C to 85°C
Ta=85°C to 105°C
Ta=+25°C
VDET=4.8V
Ta=-40°C to 85°C
Ta=85°C to 105°C
*1
Detection Voltage
V
DET
Min.
Max.
V
DET
(T)
V
DET
(T)
V
DET
(T)
×0.99
×1.01
2.475
2.5
2.525
2.418
-
2.584
2.404
-
2.597
2.970
3.0
3.030
2.901
-
3.100
2.885
-
3.117
3.267
3.3
3.333
3.191
-
3.410
3.173
-
3.428
4.158
4.2
4.242
4.061
-
4.341
4.039
-
4.364
4.752
4.8
4.848
4.641
-
4.961
4.616
-
4.987
-
±100
±360
Limit
Typ.
Unit
V
Detection Voltage
Temperature coefficient
Hysteresis Voltage
‘High’ Output
Delay time
V
DET
/
∆T
∆V
DET
t
PLH
-40°C to +105°C
V
DD
＝L
H L, R
L
=470kΩ
C
L
=100pF,
R
L
=100kΩ
*1, *2, *3
ppm/°C
V
ms
BD45
XX
5, BD46
XX
5
BD45
XX
1, BD46
XX
1
BD45
XX
2, BD46
XX
2
*1
V
DD
=V
DET
-0.2V, V
ER
=0V V
DET
=2.3V to 3.1V
V
DD
=V
DET
-0.2V, V
ER
=0V V
DET
=2.3V to 3.1V
Circuit Current
when ON
I
DD
1
V
DD
=V
DET
-0.2V, V
ER
=0V V
DET
=3.2V to 4.2V
V
DD
=V
DET
-0.2V, V
ER
=0V V
DET
=3.2V to 4.2V
V
DD
=V
DET
-0.2V, V
ER
=0V V
DET
=4.3V to 4.8V
V
DD
=V
DET
-0.2V, V
ER
=0V V
DET
=4.3V to 4.8V
V
DD
=V
DET
+0.2V, V
ER
=0V V
DET
=2.3V to 3.1V
V
DD
=V
DET
+0.2V, V
ER
=0V V
DET
=2.3V to 3.1V
*1
*1
*1
Circuit Current
when OFF
I
DD
2
V
DD
=V
DET
+0.2V, V
ER
=0V V
DET
=3.2V to 4.2V
V
DD
=V
DET
+0.2V, V
ER
=0V V
DET
=3.2V to 4.2V
V
DD
=V
DET
+0.2V, V
ER
=0V V
DET
=4.3V to 4.8V
V
DD
=V
DET
+0.2V, V
ER
=0V V
DET
=4.3V to 4.8V
*1
*1
V
DET
(T) V
DET
(T) V
DET
(T)
×0.03
×0.05
×0.08
45
50
55
90
100
110
180
200
220
-
0.70
2.10
-
0.70
2.85
-
0.75
2.25
-
0.75
3.00
-
0.80
2.40
-
0.80
3.15
-
0.75
2.25
-
0.75
4.28
-
0.80
2.40
-
0.80
4.50
-
0.85
2.55
-
0.85
4.73
µA
µA
V
DET
(T):Standard Detection Voltage (2.3V to 4.8V, 0.1V step)
R
L
:Pull-up resistor to be connected between V
OUT
and power supply.
C
L
:Capacitor to be connected between V
OUT
and GND.
*1 Guarantee is Ta=25°C.
*2 t
PLH
:V
DD
=(V
DET
(T)-0.5V) (V
DET
(T)+0.5V)
*3 t
PLH
:V
DD
=Please set the rise up time between V
DD
=0 V
DET
to more than 100µs.
Attention: Please connect the GND when you don’t use ‘ER’
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/13
TSZ02201-0R7R0G300010-1-2
15.Nov.2013 Rev.007
BD45xxx series BD46xxx series
●Electrical
characteristics (Unless Otherwise Specified Ta=-40 to 105°C) - continued
Parameter
Operating Voltage Range
‘High’ Output Voltage (Pch)
‘Low’Output Voltage (Nch)
Leak Current when OFF
ER Pin ‘H’ Voltage
ER Pin ‘L’ Voltage
ER Pin Input Current
Symbol
V
OPL
V
OH
V
OL
I
leak
V
EH
V
EL
I
EL
Condition
V
OL
≤0.4V,
R
L
=470kΩ, Ta=25 to 105°C
V
OL
≤0.4V,
R
L
=470kΩ, Ta=-40 to 25°C
V
DD
=4.8V, I
SOURCE
= 1.0 mA, V
DET
(2.3V to 4.2V)
V
DD
=6.0V, I
SOURCE
= 1.2 mA, V
DET
(4.3V to 4.8V)
V
DD
=1.2V, I
SINK
= 0.45 mA
V
DD
=2.4V, I
SINK
= 1.3 mA, V
DET
(2.7V to 4.8V)
V
DD
=V
DS
=10V
*1
*1
*1
Datasheet
Min.
0.95
1.20
VDD-0.5
VDD-0.5
-
-
-
2.0
-
-
Limit
Typ.
-
-
-
-
-
-
-
-
-
1
Max.
-
-
-
-
0.3
0.3
0.1
-
0.8
10
Unit
V
V
V
µA
V
V
µA
V
DET
(T):Standard Detection Voltage (2.3V to 4.8V, 0.1V step)
R
L
:Pull-up resistor to be connected between V
OUT
and power supply.
C
L
:Capacitor to be connected between V
OUT
and GND.
*1 Guarantee is Ta=25°C.
Attention: Please connect the GND when you don’t use ‘ER’
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/13
TSZ02201-0R7R0G300010-1-2
15.Nov.2013 Rev.007
Embedded System
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