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参数资料
| 型号： | LM3712YUBPX-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： | 11/14页 |
| 文件大小： | 311K |
| 代理商： | LM3712YUBPX-308 |
Symbol
Parameter
Conditions
Min
Typ
Max
Units
R
MR
MR Pull-up
Resistance
35
56
75
k
t
MD
MR to Reset Delay
12
S
t
MR
MR Pulse Width
25
S
PFO, WDO
V
OL
PFO, WDO Output
Voltage
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
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
LLO OUTPUT
V
LLOT
LLO Output
Threshold
(V
LLO VRST, VCC
falling)
1.01V
RST
1.02V
RST
1.03V
RST
V
LLOTH
Low-Line
Comparator
Hysteresis
0.0032V
RST
mV
t
CD
Low-Line
Comparator Delay
V
CC falling at 1mV/s
20
s
Note 1: Absolute Maximum Ratings
indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device
is intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications and test conditions, see the Electrical Characteristics.
The guaranteed specifications apply only for the test conditions listed. Some performance characteristics may degrade when the device is not operated under
the listed conditions.
Note 2:
The Human Body model is a 100 pF capacitor discharged through a 1.5 k
resistor into each pin. The machine model is a 200pF capacitor discharged
directly into each pin.
Note 3:
The maximum allowable power dissipation is a function of the maximum junction temperature, T
J(MAX), the junction-to-ambient thermal resistance, θJ-
A, and the ambient temperature, TA. The maximum allowable power dissipation at any ambient temperture is calculated using:
Where the value of
θ
J-A for the micro SMD package is 220°C/W.
www.national.com
6
LM3712
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