Rainbow Electronics BD4719G User Manual
High-accuracy
Low current consumption
General-purpose
5
4
RESET IC
BD47XXG series
Description
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.
Features
1) Detection voltage: 0.1V step line up 1.9~4.6V(Typ.)
2) High-accuracy voltage detection Vs±2%(Max.)
3) Low current consumption
4) "L" reset output of open collector
5) Small SMP5 package
Applications
Portable products, Equipments with CPU and logic circuit
Series characteristics
Part No.
Detection voltage Vs (V)
Min
4.508BD4746G 50 15 SMP5
4.116BD4742G 50 15 SMP5
Typ.
4.600
4.500 4.590 1.54.410BD4745G 50 15 SMP5
4.400 4.488 1.54.312BD4744G 50 15 SMP5
4.300 4.386 1.54.214BD4743G 50 15 SMP5
4.200 4.284 1.5
4.100 4.182 1.54.018BD4741G 50 15 SMP5
4.000 4.080 1.53.920BD4740G 50 15 SMP5
3.900 3.978 1.53.822BD4739G 50 15 SMP5
3.800 3.876 1.53.724BD4738G 50 15 SMP5
3.700 3.774 1.53.626BD4737G 50 15 SMP5
3.600 3.672 1.53.528BD4736G 50 15 SMP5
3.500 3.570 1.53.430BD4735G 50 15 SMP5
3.400 3.468 1.53.332BD4734G 50 15 SMP5
3.300 3.366 1.53.234BD4733G 50 15 SMP5
3.200 3.264 1.53.136BD4732G 50 15 SMP5
3.100 3.162 1.53.038BD4731G 50 15 SMP5
3.000 3.060 1.52.940BD4730G 50 15 SMP5
2.900 2.958 1.52.842BD4729G 50 15 SMP5
2.800 2.856 1.52.744BD4728G 50 15 SMP5
2.700 2.754 1.52.646BD4727G 50 15 SMP5
2.600 2.652 1.52.548BD4726G 50 15 SMP5
2.500 2.550 1.52.450BD4725G 50 15 SMP5
2.400 2.448 1.52.352BD4724G 50 15 SMP5
2.300 2.346 1.52.254BD4723G 50 15 SMP5
2.200 2.244 1.52.156BD4722G 50 15 SMP5
2.100 2.142 1.52.058BD4721G 50 15 SMP5
2.000 2.040 1.51.960BD4720G 50 15 SMP5
1.900 1.938 1.51.862BD4719G 50 15 SMP5
Max.
4.692
Consumption
current (µA Typ.)
I
CCL
1.5
I
CCH
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
1.6
1.6
1.6
1.6
1.6
1.6
1.6
1.6
0.2
±
2.8
1.25MAX
Hysteresis
voltage (mV)
1
2
3
2.9±0.2
(5)
(4)
0.2
0.1
–
+
1.6
(2)(1)
(3)
±
0.05
1.1
0.95
0.05
±
0.05
SMP5
Operating output
current (mA)
0.42
0.1
0.05
+
0.04
–
1pin : N.C.
2pin : SUB
3pin : GND
4pin : Vout
5pin : Vcc
(UNIT:mm)
0.2MIN
0.05
+
0.13
0.03
–
Package
Absolute Maximum Ratings(Ta=25˚C)
Parameter Symbol Unit
Power supply voltage
Output voltage
Power dissipation (SMP5)
Operating temperature range
Storage temperature range
Note) The ratings shown above indicate breakdown limit of the pin and should not be regarded as the values that guarantee the operation.
Vcc
Po
Pd
Topr
Tstg
* Derating : 1.5mW/˚C for operation above Ta=25˚C
Limits
–0.3 ~ +10
–0.3 ~ +10
*
150
–20 ~ +75
–40 ~ +125
V
V
mW
˚C
˚C
Electrical characteristics(Unless otherwise noted; Ta=25˚C)
Symbol Min. Max. Unit ConditionsTyp.Parameter
Detection voltage Vs –2%
Detection voltage
temperature coefficient
Hysteresis voltage
"H" transfer delay time
"L" transfer delay time
"L" output voltage
Circuit current (At ON mode)
Circuit current (At OFF mode)
Operating limit voltage
Output leak current
*1 TPLH : Vcc=(Vs typ.–0.4V)Æ(Vs typ.+0.4V)
*2 TPHL : Vcc=(Vs typ.+0.4V)Æ(Vs typ.–0.4V)
Vs/∆T
∆Vs
TPLH
TPHL
VOL
Icc1
Icc2
VOPL
IL
—
30
—
—
—
—
—
—
—
1.9~4.6
±0.01
50
20
60
0.1
1.5
1.6
0.65
—
+2%
—
100
50
120
0.4
3.0
3.2
0.85
0.1
V
%/˚C
mV
µS
µS
V
µA
µA
V
µA
RL=4.7kΩ, Vcc=HÆL
RL=4.7KΩ, Ta=–20~+75˚C
RL=4.7KΩ, Vcc=LÆHÆL
CL=100PF, RL=4.7KΩ
CL=100PF, RL=4.7KΩ
Vcc=VsMIN.–0.05V, RL=4.7KΩ
Vcc=VsMIN.–0.05V, RL=∞
Vcc=VsTYP./0.85V, RL=∞
RL=4.7KΩ, VOL≥0.4V
Vcc=Vout=10V
3.0 15.0 — mAIOL"L" output current Vo=0.4V, Vcc=VsMIN.–0.05V
*1
*2
Timing waveform Transfer delay time measurement circuit
VCC
VOUT
VCC
VS+∆VS
VS
0V
VOH
VOL
TPLH
TPHL
VCC
0.22uF
5 4
Vcc Vout
BD47XXG
NC SUB GND
1 2 3
RL=4.7KΩ
100pF
Application Circuit
VDD
5
VCC
Micro
controller
Vref
3
GND
BD47XXG
4
reset pin
Vout
Loading...