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參數(shù)資料
| 型號： | MB3793 |
| 廠商： | Fujitsu Limited |
| 英文描述： | POWER-VOLTAGE MONITORING IC WITH WATCHDOG TIMER |
| 中文描述： | 電源電壓監(jiān)測芯片，帶有看門狗定時器 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 192K |
| 代理商： | MB3793 |
12
MB3793
-42/30
I
ELECTRICAL CHARACTERISTICS
1. DC Characteristics
*At clock input pins CK1 and CK2, the pulse input frequency is 1 kHz and the pulse amplitude is 0 V to V
CC
.
**Inhibition input is at High level.
(V
CC
= +5 V (MB3793-42), V
CC
= +3.3 V (MB3793-30), Ta = +25
°
C)
Parameter
Symbol
Test Conditions
Limits
Unit
Min.
Typical
Max.
Power current
MB3793-42
I
CC1
Watchdog timer operation*
-
27
50
μ
A
I
CC2
Watchdog timer halt**
-
25
45
MB3793-30
I
CC1
Watchdog timer operation*
-
25
45
μ
A
I
CC2
Watchdog timer halt**
-
24
45
Detection voltage
MB3793-42
V
SL
V
CC
falling
Ta = +25
°
C
4.10
4.20
4.30
V
Ta = -40 to +85
°
C
4.05
4.20
4.35
V
SH
V
CC
rising
Ta = +25
°
C
4.20
4.30
4.40
V
Ta = -40 to +85
°
C
4.15
4.30
4.45
MB3793-30
V
SL
V
CC
falling
Ta = +25
°
C
2.90
3.00
3.10
V
Ta = -40 to +85
°
C
2.85
3.00
3.15
V
SH
V
CC
rising
Ta = +25
°
C
2.97
3.07
3.17
V
Ta = -40 to +85
°
C
2.92
3.07
3.22
Detection voltage
hysteresis difference
MB3793-42
V
SHYS
V
SH
- V
SL
50
100
150
mV
MB3793-30
30
70
110
mV
Clock-input threshold voltage
V
thCH
-
(1.4)
1.9
(2.5)
V
V
thCL
-
(0.8)
1.3
(1.8)
V
Clock-input hysteresis
V
CHYS
-
(0.4)
0.6
(0.8)
V
Inhibition-input threshold voltage
V
thIN
-
0.8
1.5
2.0
V
Input current
CK1
CK2
INH
I
IH
V
CK
= V
CC
-
0
1.0
μ
A
I
IL
V
CK
= 0 V
-1.0
0
-
μ
A
Reset output voltage
MB3793-42
V
OH
I
RESET
= -5 mA
4.5
4.75
-
V
V
OL
I
RESET
= +5 mA
-
0.12
0.4
V
MB3793-30
V
OH
I
RESET
= -3 mA
2.8
3.10
-
V
V
OL
I
RESET
= +3 mA
-
0.12
0.4
V
Reset-output minimum power voltage
V
CCL
I
RESET
= +50
μ
A
-
0.8
1.2
V
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