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參數(shù)資料
| 型號： | LM2795 |
| 文件頁數(shù)： | 4/14頁 |
| 文件大?。?/td> | 373K |
| 代理商： | LM2795 |
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
IN
SD
0.5 to 6.2V max
0.5 to (V
IN
+0.3V) w/
6.2V max
BRGT
0.5 to (V
IN
+0.3V) w/
6.2V max
Power Dissipation (T
A
= 25C
(Note 2)
T
JMAX
(Note 2)
θ
JA
(Notes 2, 3)
400 mW
135C
125C/W
Storge Temperature
Lead Temp. (Soldering, 5 sec.)
ESD Rating (Note 4)
Human Body Model
Machine Model
65C to +150C
260C
2KV
200V
Operating Conditions
Input Voltage (V
IN
)
Ambient Temperature (T
A
)
Junction Temperature (T
J
)
2.7V to 5.5V
30C to +85C
30C to +85C
Electrical Characteristics
Limits in standard typeface are for T
J
= 25C and limits in
boldface type
apply over the full
Operating Temperature Range
.
Unless otherwise specified, C1 = C2 = C
IN
= C
HOLD
= 1 μF, V
IN
= 3.6V, BRGT pin = 0V; R
SET
=124
; LM2794:V
SD
= V
IN
(LM2795: V
SD
= 0V).
Symbol
Parameter
Conditions
I
DX
Available Current at Output Dx
3.0V
≤
V
IN
≤
5.5V
V
DX
≤
3.8V
BRGT = 50mV
2.7V
≤
V
IN
≤
3.0V
V
DX
≤
3.6V
BRGT = 0V
V
DX
≤
3.8V
BRGT = 200mV
V
DX
Available Voltage at Output Dx
3.0V
≤
V
IN
≤
5.5V
I
DX
≤
15mA
BRGT = 50mV
I
DX
Line Regulation of Dx Output
Current
V
DX
= 3.6V
3.0V
≤
V
IN
≤
4.4V
V
DX
= 3.6V
I
DX
Load Regulation of Dx Output
Current
3.0V
≤
V
DX
≤
3.8V
I
D-MATCH
Current Matching Between Any
Two Outputs
I
Q
Quiescent Supply Current
3.0V
≤
V
IN
≤
4.2V, Active, No
Load Current
R
SET
= OPEN
I
SD
Shutdown Supply Current
3.0V
≤
V
IN
≤
5.5V, Shutdown
I
PULL-SD
Shutdown Pull-Up Current
(LM2795)
V
CP
Input Charge-Pump Mode To
Pass Mode Threshold
V
CPH
Input Charge-Pump Mode To
Pass Mode Hysteresis
V
IH
SD Input Logic High (LM2794)
3.0V
≤
V
IN
≤
5.5V
SD Input Logic High (LM2795)
V
IL
SD Input Logic Low (LM2794)
3.0V
≤
V
IN
≤
5.5V
SD Input Logic Low (LM2795)
I
LEAK-SD
SD Input Leakage Current
0V
≤
V
SD
≤
V
IN
R
BRGT
BRGT Input Resistance
Min
15
Typ
16.8
Max
Units
mA
10
mA
20
mA
3.8
V
3.0V
≤
V
IN
≤
5.5V
14.18
15.25
16.78
mA
14.18
15.25
16.32
mA
V
IN
= 3.6V
14.18
15.25
16.32
mA
V
IN
= 3.6V, V
DX
= 3.6V
0.5
%
5.5
8.2
mA
2.3
1.5
5
μA
μA
V
IN
= 3.6V
4.7
V
(Note 5)
250
mV
1.0
V
0.8V
IN
0.2
V
0.2V
IN
100
240
nA
k
L
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