Datasheet
Voltage Detector IC Series for Automotive
Counter Timer Built-in
CMOS Voltage Detector IC
BD45Exxxx-M series BD46Exxxx-M series
●General
Description
ROHM’s
BD45Exxxx-M and BD46Exxxx-M series are
highly accurate, low current consumption Voltage
Detector IC series. Because the counter timer delay
circuit is built into those series, an external capacitor for
the delay time setting is unnecessary. The lineup was
established with two 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 to application.
●Features
Counter Timer Built-in
No delay time setting capacitor required
Ultra-low current consumption
Two output types (Nch open drain and CMOS output)
Package SSOP5 is similar to SOT-23-5 (JEDEC)
AEC-Q100 Qualified
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
50ms
Three internal, fixed delay time:
100ms
200ms
●Package
SSOP5
2.90mm x 2.80mm x 1.25mm
●Key
Specifications
Detection voltage:
●Applications
Circuits using microcontrollers or logic circuits that
require a reset for automotive applications (car
navigation, car audio, meter panel, exterior lamp etc.)
●Typical
Application Circuit
V
DD1
R
L
BD45Exxxx-M
R
ST
Micro
controller
BD46Exxxx-M
R
ST
Micro
controller
V
DD2
V
DD1
C
L
（Noise-filtering
Capacitor）
C
L
（Noise-filtering
Capacitor）
GND
GND
（Open
Drain Output Type）
BD45Exxxx-M series
●Connection
Diagram
SSOP5
V
DD
V
OUT
PIN No.
1
2
TOP VIEW
（CMOS
Output Type）
BD46Exxxx-M 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
1/14
TSZ02201-0R7R0G300110-1-2
27.Aug.2013 Rev.004
BD45Exxxx-M series BD46Exxxx-M series
●Ordering
Information
B
Part
Number
D
x
x
E
x
x
x
x
-
M
Product Category
M : Automotive Category
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
●Lineup
Table 1. Open Drain Output Type
Counter Timer Delay Time Settings
50ms
Detection
Voltage Marking
4.8V
4.7V
4.6V
4.5V
4.4V
4.3V
4.2V
4.1V
4.0V
3.9V
3.8V
3.7V
3.6V
3.5V
3.4V
3.3V
3.2V
3.1V
3.0V
2.9V
2.8V
2.7V
2.6V
2.5V
2.4V
2.3V
a2
a1
Yy
Yr
Yp
Yn
Ym
Yk
Yh
Yg
Yf
Ye
Yd
Yc
Yb
Ya
Uy
Ur
Up
Un
Um
Uk
Uh
Ug
Uf
Ue
Part
Number
BD45E485
BD45E475
BD45E465
BD45E455
BD45E445
BD45E435
BD45E425
BD45E415
BD45E405
BD45E395
BD45E385
BD45E375
BD45E365
BD45E355
BD45E345
BD45E335
BD45E325
BD45E315
BD45E305
BD45E295
BD45E285
BD45E275
BD45E265
BD45E255
BD45E245
BD45E235
100ms
Marking
d1
c9
c8
c7
c6
c5
c4
c3
c2
c1
b9
b8
b7
b6
b5
b4
b3
b2
b1
a9
a8
a7
a6
a5
a4
a3
Part
Number
BD45E481
BD45E471
BD45E461
BD45E451
BD45E441
BD45E431
BD45E421
BD45E411
BD45E401
BD45E391
BD45E381
BD45E371
BD45E361
BD45E351
BD45E341
BD45E331
BD45E321
BD45E311
BD45E301
BD45E291
BD45E281
BD45E271
BD45E261
BD45E251
BD45E241
BD45E231
200ms
Marking
f9
f8
f7
f6
f5
f4
f3
f2
f1
e9
e8
e7
e6
e5
e4
e3
e2
e1
d9
d8
d7
d6
d5
d4
d3
d2
Part
Number
BD45E482
BD45E472
BD45E462
BD45E452
BD45E442
BD45E432
BD45E422
BD45E412
BD45E402
BD45E392
BD45E382
BD45E372
BD45E362
BD45E352
BD45E342
BD45E332
BD45E322
BD45E312
BD45E302
BD45E292
BD45E282
BD45E272
BD45E262
BD45E252
BD45E242
BD45E232
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
2/14
TSZ02201-0R7R0G300110-1-2
27.Aug.2013 Rev.004
BD45Exxxx-M series BD46Exxxx-M series
●Lineup
- continued
Table 2. CMOS Output Type
Counter Timer Delay Time Settings
50ms
Detection
Voltage Marking
4.8V
4.7V
4.6V
4.5V
4.4V
4.3V
4.2V
4.1V
4.0V
3.9V
3.8V
3.7V
3.6V
3.5V
3.4V
3.3V
3.2V
3.1V
3.0V
2.9V
2.8V
2.7V
2.6V
2.5V
2.4V
2.3V
k8
k7
k6
k5
k4
k3
k2
k1
h9
h8
h7
h6
h5
h4
h3
h2
h1
g9
g8
g7
g6
g5
g4
g3
g2
g1
Part
Number
BD46E485
BD46E475
BD46E465
BD46E455
BD46E445
BD46E435
BD46E425
BD46E415
BD46E405
BD46E395
BD46E385
BD46E375
BD46E365
BD46E355
BD46E345
BD46E335
BD46E325
BD46E315
BD46E305
BD46E295
BD46E285
BD46E275
BD46E265
BD46E255
BD46E245
BD46E235
Marking
p7
p6
p5
p4
p3
p2
p1
n9
n8
n7
n6
n5
n4
n3
n2
n1
m9
m8
m7
m6
m5
m4
m3
m2
m1
k9
100ms
Part
Number
BD46E481
BD46E471
BD46E461
BD46E451
BD46E441
BD46E431
BD46E421
BD46E411
BD46E401
BD46E391
BD46E381
BD46E371
BD46E361
BD46E351
BD46E341
BD46E331
BD46E321
BD46E311
BD46E301
BD46E291
BD46E281
BD46E271
BD46E261
BD46E251
BD46E241
BD46E231
Marking
1f
1e
1d
1c
1b
1a
y9
y8
y7
y6
y5
y4
y3
y2
y1
r9
r8
r7
r6
r5
r4
r3
r2
r1
p9
p8
200ms
Part
Number
BD46E482
BD46E472
BD46E462
BD46E452
BD46E442
BD46E432
BD46E422
BD46E412
BD46E402
BD46E392
BD46E382
BD46E372
BD46E362
BD46E352
BD46E342
BD46E332
BD46E322
BD46E312
BD46E302
BD46E292
BD46E282
BD46E272
BD46E262
BD46E252
BD46E242
BD46E232
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/14
TSZ02201-0R7R0G300110-1-2
27.Aug.2013 Rev.004
BD45Exxxx-M series BD46Exxxx-M series
Absolute maximum ratings
Parameter
Power Supply Voltage
Nch Open Drain Output
Output Voltage
CMOS Output
Output Current
ER pin Voltage
Power Dissipation
*1,*2
Operating Temperature
Ambient Storage Temperature
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
=HL, 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
Detection Voltage
V
DET
Min.
Max.
V
DET
(T)
V
DET
(T)
V
DET
(T)
*1
×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
V
DET
(T)
×0.08
55
110
220
2.10
2.85
2.25
3.00
2.40
3.15
2.25
4.28
2.40
4.50
2.55
4.73
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
＝LHL,
R
L
=470kΩ
C
L
=100pF,
R
L
=100kΩ
*1,*2,*3
BD45E
XX
5, BD46E
XX
5
BD45E
XX
1, BD46E
XX
1
BD45E
XX
2, BD46E
XX
2
*1
*1
*1
*1
*1
*1
ppm/°C
V
ms
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
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
V
DET
(T) V
DET
(T)
×0.03
×0.05
45
50
90
100
180
200
-
0.70
-
0.70
-
0.75
-
0.75
-
0.80
-
0.80
-
0.75
-
0.75
-
0.80
-
0.80
-
0.85
-
0.85
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 up the rise up time between V
DD
=0V
DET
more than 100µs.
Attention: Please connect
‘ER’ to
the GND when not in use.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
4/14
TSZ02201-0R7R0G300110-1-2
27.Aug.2013 Rev.004
BD45Exxxx-M series BD46Exxxx-M 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
Min.
V
OL
≤0.4V,
R
L
=470kΩ, Ta=25 to 105°C
0.95
1.20
V
OL
≤0.4V,
R
L
=470kΩ, Ta=-40 to 25°C
VDD-0.5
V
DD
=4.8V, I
SOURCE
= 1.0 mA, V
DET
(2.3V to 4.2V)
VDD-0.5
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
2.0
*1
-
*1
-
Condition
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
‘ER’ to
the GND when not in use.
www.rohm.com
© 2013 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/14
TSZ02201-0R7R0G300110-1-2
27.Aug.2013 Rev.004
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