BD4735G [ROHM]
RESET IC; 复位IC型号: | BD4735G |
厂家: | ROHM |
描述: | RESET IC |
文件: | 总5页 (文件大小:325K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
High-accuracy
Low current consumption
5
General-purpose
RESET IC
4
1
1pin : N.C.
2pin : SUB
3pin : GND
4pin : Vout
5pin : Vcc
2
3
BD47XXG series
Description
(UNIT:mm)
BD47XXG is a series of RESET ICs developed to prevent
system error at transient state when the power of CPU and
logic circuit switches ON/OFF or shutdown. These ICs consist
of Power, GND, and reset output to detect power supply voltage
of various systems and to output reset signal. These ICs are
more practical for portable products because of their ultra-small
package and low current consumption.
2.9±0.2
(
)
5
(
)
)
4
(
) ( )
1 2
(
3
0.05
0.03
+
0.13
–
Features
0.05
0.04
+
0.95
0.42
–
1) Detection voltage: 0.1V step line up 1.9~4.6V(Typ.)
0.1
2) High-accuracy voltage detection
3) Low current consumption
4) "L" reset output of open collector
5) Small SMP5 package
Vs±2%(Max.)
SMP5
Applications
Portable products, Equipments with CPU and logic circuit
Series characteristics
Consumption
current (µA Typ.)
Operating output
current (mA)
Hysteresis
voltage (mV)
Detection voltage Vs (V)
Package
Part No.
BD4746G
I
CCH
Min
Typ.
Max.
4.692
4.590
4.488
4.386
4.284
4.182
4.080
3.978
3.876
3.774
3.672
3.570
3.468
3.366
3.264
3.162
3.060
2.958
2.856
2.754
2.652
2.550
2.448
2.346
2.244
2.142
2.040
1.938
ICCL
4.508
4.410
4.312
4.214
4.116
4.018
3.920
3.822
3.724
3.626
3.528
3.430
3.332
3.234
3.136
3.038
2.940
2.842
2.744
2.646
2.548
2.450
2.352
2.254
2.156
2.058
1.960
1.862
4.600
4.500
4.400
4.300
4.200
4.100
4.000
3.900
3.800
3.700
3.600
3.500
3.400
3.300
3.200
3.100
3.000
2.900
2.800
2.700
2.600
2.500
2.400
2.300
2.200
2.100
2.000
1.900
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
1.5
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
50
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
15
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
SMP5
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
BD4745G
BD4744G
BD4743G
BD4742G
BD4741G
BD4740G
BD4739G
BD4738G
BD4737G
BD4736G
BD4735G
BD4734G
BD4733G
BD4732G
BD4731G
BD4730G
BD4729G
BD4728G
BD4727G
BD4726G
BD4725G
BD4724G
BD4723G
BD4722G
BD4721G
BD4720G
BD4719G
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
Absolute Maximum Ratings(Ta=25˚C)
Parameter
Symbol
Vcc
Limits
Unit
V
Power supply voltage
Output voltage
–0.3 ~ +10
–0.3 ~ +10
Po
V
*
150
Pd
Power dissipation (SMP5)
Operating temperature range
Storage temperature range
mW
˚C
˚C
Topr
–20 ~ +75
Tstg
–40 ~ +125
Note) The ratings shown above indicate breakdown limit of the pin and should not be regarded as the values that guarantee the operation.
* Derating : 1.5mW/˚C for operation above Ta=25˚C
Electrical characteristics(Unless otherwise noted; Ta=25˚C)
Parameter
Symbol
Vs
Min.
Typ.
Max.
+2%
—
Unit
V
Conditions
Detection voltage
–2% 1.9~4.6
RL=4.7kΩ, Vcc=HÆL
RL=4.7KΩ, Ta=–20~+75˚C
RL=4.7KΩ, Vcc=LÆHÆL
Detection voltage
Vs/∆T
∆Vs
TPLH
TPHL
—
30
—
—
±0.01
50
%/˚C
mV
µS
temperature coefficient
Hysteresis voltage
100
50
*1
"H" transfer delay time
"L" transfer delay time
20
CL=100PF, RL=4.7KΩ
*2
120
µS
CL=100PF, RL=4.7KΩ
60
0.1
1.5
1.6
0.65
—
"L" output voltage
VOL
Icc1
Icc2
VOPL
IL
—
—
—
—
—
3.0
0.4
3.0
3.2
0.85
0.1
—
V
µA
µA
V
Vcc=VsMIN.–0.05V, RL=4.7KΩ
Vcc=VsMIN.–0.05V, RL=∞
Vcc=VsTYP./0.85V, RL=∞
RL=4.7KΩ, VOL≥0.4V
Circuit current (At ON mode)
Circuit current (At OFF mode)
Operating limit voltage
Output leak current
"L" output current
µA
mA
Vcc=Vout=10V
IOL
15.0
Vo=0.4V, Vcc=VsMIN.–0.05V
*1 TPLH : Vcc=(Vs typ.–0.4V)Æ(Vs typ.+0.4V)
*2 TPHL : Vcc=(Vs typ.+0.4V)Æ(Vs typ.–0.4V)
Timing waveform
Transfer delay time measurement circuit
VCC
VCC
VS+∆VS
0.22uF
RL=4.7KΩ
VS
5
Vcc
4
Vout
100pF
0V
VOUT
VCC
VOH
BD47XXG
NC
SUB
GND
TPLH
TPHL
1
2
3
VOL
Application Circuit
VDD
VCC
Micro
controller
5
4
reset pin
Vout
Vref
BD47XXG
3
GND
Characteristic diagram and Measurement circuit (When BD4729G is measured.)
Current consumption
I/O characteristic
6
5
4
3
2
1
0
10
9.5
9
8.5
8
7.5
7
6.5
6
5.5
5
4.5
4
3.5
3
Vs=2.9V
Vs=2.95V
2.5
2
1.5
1
dVs=50mV
Icc1=1.34µA
Icc2=1.46µA
0.5
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10
Vcc (V)
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
Vcc (V)
R=4.7K
Vcc
VOUT
NC
A
Vcc
VOUT
BD4729G
BD4729G
V
10µF
V
V
10µF
GND
GND
Operating limit voltage
'L' output current
800
700
600
500
400
300
200
100
0
1000
900
800
700
600
500
400
300
200
100
0
IOL=12.194mA@Vo=400mV
VOPL=0.675V
0
0.25 0.5 0.75
1
1.25 1.5 1.75
Vcc (V)
2
2.25 2.5 2.75
0
2.5
5
7.5 10 12.5 15 17.5 20 22.5 25 27.5 30 32.5
Iol (mA)
R=4.7K
Vcc
VOUT
A
Vcc
VOUT
BD4729G
V
BD4729G
10µF
IOL
V
V
10µF
GND
GND
Setting of the RESET signal delay time
Delay time can be set by capacitor CL and resistance RL connected to the output pin as shown below.
CL is charged by RL when Vcc is rising. The delay time caused by charging is determined by the
time constant of CL, RL and the threshold voltage of RESET pin. RESET IC discharges CL forcedly
when Vcc is falling. The delay time of RESET signal is determined by adding the delay time of single
RESET IC to each time.
VCC
VS+∆VS
VS
VCC
V
DD
Vcc
Vout
GND
R
L
CPU
Micro-controller
RESET
GND
BD47XXG
0V
C
L
VOH
RESET
(=VOUT)
TPLH
TPHL
TPLH
VOL
Part number and Marking of samples
( )
4
( )
5
Marking
Voltage
Voltage
Marking
Marking Voltage
Part No.
Part No.
Part No.
BA
BB
BC
BD
BE
BF
BG
BH
B3
BJ
1.9V
2.0V
2.1V
2.2V
2.3V
2.4V
2.5V
2.6V
2.7V
2.8V
BD4719
BD4720
BD4721
BD4722
BD4723
BD4724
BD4725
BK
BL
BM
BN
B4
BP
BQ
BR
BS
BT
2.9V
3.0V
3.1V
3.2V
3.3V
3.4V
3.5V
3.6V
3.7V
3.8V
BD4729
BD4730
BD4731
BD4732
BD4733
BD4734
BD4735
BU
BV
BW
BX
BY
BZ
B1
B2
3.9V
4.0V
4.1V
4.2V
4.3V
4.4V
4.5V
4.6V
BD4739
BD4740
BD4741
BD4742
BD4743
BD4744
BD4745
( )
2
( )
3
( )
1
BD4726
BD4727
BD4728
BD4736
BD4737
BD4738
BD4746
Lot.No
Marking
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
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