System Reset IC
KODENSHI
BMR-0302
BMR–0302 is the low reset type of IC that guarantee to set again micro
computers or logic systems by detecting the intermittent of fluctuating
power supply voltage during normal use or switching on/off of
theequipments.
A comparator type of hysteresis transistor developed by KODENSHI is
built in the IC,so that BMR–0302 is very cost effective components.
And,BMR–0302 is a super–low consumption electric current system
reset IC which has been developed with using high resistance process.
FEATURES
•Super low current consumption
–
•Low operation voltage
•High current of output transistor
•Hysteresis circuit built in
•It has on delay function to supplement the constant of outer C and R
•A package is SOT–23 of the super–miniature surface mounting type
APPLICATIONS
•Micro computer circuits in mobile phones,word processors,TVs,VCRs
etc.
•General logic circuits
•Detection of voltage drop in batteries of note personal computers,
mobile phones
•Switching to backup power supply
DIMENSIONS
(Unit : mm)
MAXIMUM RATINGS
Item
Supply voltage
Power dissipation
Operating temp.
Storage temp.
(Ta=25℃)
Symbol
V
CC
P
D
Topr.
Tstg
Rating
-0.3~+10.0
150
-20~+75
-40~+125
Unit
V
mW
℃
℃
ELECTRO-OPTICAL CHARACTERISTICS
Item
BMR-0302C
BMR-0302D
BMR-0302E
BMR-0302F
BMR-0302G
BMR-0302H
BMR-0302I
BMR-0302J
BMR-0302K
BMR-0302L
℃)
(V
C C
=5V,Ta=25
Symbol
Conditions
Min.
4.3
4.0
3.7
3.4
3.1
2.9
2.75
2.55
2.35
2.15
40
-
-
-
-
-
10
5
-
-
Typ.
4.5
4.2
3.9
3.6
3.3
3.1
2.9
2.7
2.5
2.3
100
±0.01
0.1
100
1.0
1.4
20
-
100
10
Max.
4.7
4.4
4.1
3.8
3.5
3.3
3.05
2.85
2.65
2.45
300
-
0.4
180
2.5
1.6
-
-
500
20
Unit.
Detecting Voltage
V
S
R
L
=470 Ω,V
CC
=H →L,V
OL
≦0.4V
V
Hysteresis voltage
Temperature coefficient of detecting voltage
Low level output voltage
Circuit current at ON
Circuit current at OFF
Threshold operating voltage
Output current at ON 1
Output current at ON 2
Transmission delay time
Transmission delay time
△V
S
V
S
/△T
V
OL
I
CCL
I
CCH
V
OPL
I
OL
1
I
OL
2
t
PLH
t
PHL
R
L
=470 Ω,V
CC
=L →H →L
R
L
=470 Ω,Ta=–20 ~75 ℃
R
L
=470 Ω,V
CC
=V
S
Min.
R
L
=∞Ω,V
CC
=V
S
Min.
R
L
=∞Ω,V
CC
=V
S
Max+0.1V
R
L
=4.7k Ω,V
OL
≦0.4V
R
L
=0 Ω,V
CC
=V
S
Min.
R
L
=0 Ω,Ta=–20 ~75 ℃
R
L
=4.7k Ω,CL =100pF
R
L
=4.7k Ω,CL =100pF
mV
%/℃
V
μ
A
μ
A
V
mA
mA
μsec
μsec
- 1-
System Reset IC
BMR-0302
Power dissipation Vs.
Ambient temp
Output voltage Vs.
Supply voltage
Output current Vs.
Supply voltage
Detecting voltage Vs.
Ambient temp.
Hysteresis voltage Vs.
Ambient temp.
Low Level output voltage Vs.
Ambient temp.
Output current at ON Vs.
Ambient temp.
Circuit current at OFF Vs.
Ambient temp.
Circuit current at ON Vs.
Ambient temp.
Load capasitance Vs.
Transmission delay time
Timing chart
- 2-
嵌入式系统
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