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參數(shù)資料
| 型號： | LM26 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Adapter Interface Circuit |
| 中文描述： | 適配器接口電路 |
| 文件頁數(shù)： | 3/6頁 |
| 文件大小： | 130K |
| 代理商： | LM26 |
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
(Note 1)
V
ADAPTER
V
PEAK SENSE
, V
DIRECTION SENSE
,
V
BACKFEED
, V
DISCONNECT
V
ADAPTER ENABLE
,
V
MASTER POWER SOURCE
V
MPS DELAY
0.3V to 28V
0.3V to V
ADAPTER
0.3V to 5.5V
0.3V to 2V
Storage Temperature
ESD Ratings
Human Body Model (Note 2)
Machine Model (Note 3)
40C to 125C
2kV
200V
Operating Ratings
(Note 1)
Supply Voltage (V
ADAPTER
)
Ambient Temp. Range
Junction Temp. Range
5V to 24V
20C to 70C
20C to 85C
Electrical Characteristics
Limits with standard typeface apply for T
J
= 25C, and limits in
boldface type
apply over the full temperature range (Note 4)
Symbol
Parameter
V
AE
Adapter Enable -
3V- or 5V-CMOS or TTL Logic Input
Low
V
AP, CP
Logic Output Voltage
Adapter present, Charger present
Low, I
SINK
= 5μA
V
MPS
I
Master Power Source
5V-CMOS Logic Input
Low
V
MPS
O
Logic Output Voltage
Master Power Source
High
Low
V
ADAPTER
Adapter Voltage for V
AP
Low-to-High
Transition
Hysteresis
V
CHARGER
Adapter Voltage for V
CP
Low-to-High Transition
Hysteresis
V
BACKFEED
Current Sense Differential Voltage
Threshold for Driving Backfeed FET
V
ADAPTER
= 5V
V
DISCONNECT
Current Sense Differential Voltage
Threshold for Driving Disconnect FET
V
ADAPTER
= 24V
V
BACKFEED
,
FET Control Voltage
High
V
DISCONNECT
Low
Conditions
Min
2.0
Typ
Max
Units
High
0.8
V
High
2.9
3.1
0.25
0.6
V
High
4.0
0.8
V
V
ADAPTER
>
5.8V
4.5
4.75
0.05
12.0
0.5
12.3
V
11.7
V
1.8
16.5
2.0
17.0
2.2
17.4
V
0.08
4
3
127
125
0.10
9
0.12
17
18
143
145
Vadapter Direction sense,
mV
Vadapter Peak sense,
135
mV
V
ADAPTER
>
11V
V
ADAPTER
-
0.5V
V
ADAPTER
-
10V or
GND+0.5V,
whichever is
greater
3
V
V
ADAPTER
>
11V
t
DRIVE
Rise/Fall Time of FET Drive
(Note 5)
Quiescent Current
Leakage Current into Backfeed or
Disconnect
Input Current into Adapter Enable
Input
Input Current into MPS Input
Delay Time Temperature Coefficient
V
ADAPTER
= 10V
C
Load
= 3000pF
V
ADAPTER
= 24V
V
ADAPTER
= 0V
V
BACKFEED
, V
DISCONNECT
= 18V
V
AE
= 3.3V,
Backfeed/Disconnect = 18V
V
MPS
= 5.5V
6
μS
I
Q
I
L,B
,
I
L,D
I
L,AE
2
1
10
15
mA
μA
50
μA
I
L, MPS
TC
DELAY
175
4000
μA
ppm/C
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.
Note 2:
The human body model is a 100pF capacitor discharged through a 1.5k
resistor into each pin.
Note 3:
The machine model is a 200pF capacitor discharged directly into each pin. All pins are rated for 200V except pins 4 and 5 which are rated for 100V.
Note 4:
Datasheet min/max specification limits are guaranteed by design, test, or statistical analysis.
L
www.national.com
3
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