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参数资料
| 型号： | LM3712YFBPX-308 |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 2-CHANNEL POWER SUPPLY MANAGEMENT CKT, PBGA9 |
| 封装： | MICRO, BUMP, SMD-9 |
| 文件页数： | 10/14页 |
| 文件大小： | 311K |
| 代理商： | LM3712YFBPX-308 |
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Supply Voltage (V
CC)
0.3V to 6.0V
All Other Inputs
0.3V to V
CC + 0.3V
ESD Ratings (Note 2)
Human Body Model
Machine Model
1.5kV
150V
Power Dissipation
(Note 3)
Operating Ratings (Note 1)
Temperature Range
40°C
≤ T
J ≤ 85°C
Electrical Characteristics
Limits in the standard typeface are for T
J = 25°C and limits in boldface type apply over full operating range. Unless otherwise
specified: V
CC = +2.2V to 5.5V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
POWER SUPPLY
V
CC
Operating Voltage
Range: V
CC
1.0
5.5
V
I
CC
V
CC Supply Current
All inputs = V
CC; all outputs floating
28
50
A
RESET THRESHOLD
V
RST
Reset Threshold
V
CC falling
0.5
2
V
RST
+0.5
+2
%
V
CC falling: TA = 0°C to 70°C
1.5
+1.5
V
RSTH
Reset Threshold
Hysteresis
0.0032V
RST
mV
t
RP
Reset Timeout
Period
Reset Timeout Period = E, J, N, S
Reset Timeout Period = F, K, P, T
Reset Timeout Period = G, L, Q, U
Reset Timeout Period = H, M, R, V
1
20
140
1120
1.4
28
200
1600
2
40
280
2240
ms
t
RD
V
CC to Reset Delay
V
CC falling at 1mV/s
20
s
RESET
V
OL
RESET
V
CC > 1.0V, ISINK = 50A
0.3
V
CC > 1.2V, ISINK = 100A
0.3
V
CC > 2.25V, ISINK = 900A
0.3
V
CC > 2.7V, ISINK = 1.2mA
0.3
V
CC > 4.5V, ISINK = 3.2mA
0.4
V
OH
RESET
V
CC > 2.25V, ISOURCE = 300A
0.8 V
CC
V
CC > 2.7V, ISOURCE = 500A
0.8 V
CC
V
CC > 4.5V, ISOURCE = 800A
V
CC 1.5V
WDI
WDI
Watchdog Input
Current
1
+1
A
WDI
T
Watchdog Input
Threshold
0.2V
CC
1.225
0.8V
CC
V
t
WD
Watchdog Timeout
Period
Watchdog Timeout Period = E, F, G, H
Watchdog Timeout Period = J, K, L, M
Watchdog Timeout Period = N, P, Q, R
Watchdog Timeout Period = S, T, U, V
4.3
71
1120
17900
6.2
102
1600
25600
9.3
153
2400
38400
ms
PFI/MR
V
PFT
PFI Input Threshold
1.200
1.225
1.250
V
MRT
MR Input Threshold
MR, Low
0.8
V
MR, High
2.0
V
PFTH/
V
MRTH
PFI/MR Threshold
Hysteresis
PFI/MR falling: V
CC = VRST MAX to 5.5V
0.0032V
RST
mV
I
PFI
Input Current (PFI
only)
75
nA
5
www.national.com
LM3712
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