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参数资料
| 型号： | LTC1232IN8#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封装： | 0.300 INCH, PLASTIC, DIP-8 |
| 文件页数： | 5/8页 |
| 文件大小： | 97K |
| 代理商： | LTC1232IN8#PBF |
5
LTC1232
1232fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
VCC Trip Point vs Temperature
Reset Active Time vs Temperature
Time-Out Period vs Temperature
VCC Trip Point vs Temperature
RST Output Voltage vs Supply Voltage
PI FU CTIO S
UU
U
TOL: Input to Select 5% or 10% Variation on VCC. When
TOL is connected to GND, the reset pulse generator forces
the reset outputs to active states as VCC falls below 4.75V
(4.62V typical). When TOL is connected to VCC, the reset
pulse generator forces the reset outputs to active states as
VCC falls below 4.5V (4.37V typical).
TD: Time-Out Delay. TD is a three-level input to select three
different time-out periods. The time-out period is set by
the TD input to be 150ms with TD connected to GND,
600ms with TD left floating, and 1.2 seconds with TD
connected to VCC.
VCC: 5V Supply Input. The VCC pin should be bypassed
with a 0.1F capacitor.
GND: Ground Pin.
PB RST: Logic Input to be Directly Connected to a Push-
Button. The PB RST input requires an active low signal
which is debounced and timed for a minimum of 40ms.
When this condition is satisfied, the reset pulse generator
forces the reset outputs to active states. The reset outputs
remain in active states for a minimum of 250ms after
PB RST is released from logic low level.
LTC1232 TPC01
TEMPERATURE (C)
–50
V
CC
TRIP
POINT
(V)
4.61
4.62
4.63
25
75
4.60
4.59
–25
0
50
100
125
4.58
4.57
TOL = GND
LTC1232 TPC02
TEMPERATURE (C)
–50
V
CC
TRIP
POINT
(V)
4.36
4.37
4.38
25
75
4.35
4.34
–25
0
50
100
125
4.33
4.32
TOL = VCC
LTC1232 TPC03
TEMPERATURE (C)
–50
RESET
ACTIVE
TIME
(ms)
648
672
696
25
75
624
600
–25
0
50
100
125
576
552
VCC = 5V
LTC1232 TPC04
TEMPERATURE (C)
–50
WATCHDOG
TIME-OUT
PERIOD
(ms)
648
672
696
25
75
624
600
–25
0
50
100
125
576
552
VCC = 5V
TD = NO CONNECTION
LTC1232 TPC05
SUPPLY VOLTAGE (V)
0
RST
OUTPUT
VOLTAGE
(V)
3
4
5
4
2
1
0
1
2
3
5
TA = 25°C
EXTERNAL PULL-UP = 10A
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