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LM2794TLX bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
tên linh kiện LM2794TLX
Giải thích chi tiết về linh kiện  Current Regulated Switched Capacitor LED Supply with Analog and PWM Brightness Control
PDF  16 Pages
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Trang chủ  http://www.national.com
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LM2794TLX bảng dữ liệu(HTML) 3 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN
−0.5 to 6.2V max
SD
−0.5 to (V
IN+0.3V) w/
6.2V max
BRGT
−0.5 to (V
IN+0.3V) w/
6.2V max
Continuous Power Dissipation
(Note 2)
Internally Limited
T
JMAX (Note 2)
135˚C
θ
JA (Notes 2, 3)
125˚C/W
Storge Temperature
−65˚C to +150˚C
Lead Temp. (Soldering, 5 sec.)
260˚C
ESD Rating (Note 4)
Human Body Model
2kV
Machine Model
200V
Operating Conditions
Input Voltage (V
IN)
2.7V to 5.5V
Ambient Temperature (T
A)
−30˚C to +85˚C
Junction Temperature (T
J)
−30˚C to +100˚C
Electrical Characteristics
Limits in standard typeface are for T
J = 25˚C and limits in boldface type apply over the full Operating Junction Temperature
Range (−30˚C
≤ T
J
≤ +100˚C). Unless otherwise specified, C1 = C2 = C
IN =CHOLD = 1 µF, VIN = 3.6V, BRGT pin = 0V; RSET
=124
Ω ; LM2794:V
SD =VIN (LM2795: VSD = 0V).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
I
DX
Available Current at Output Dx
3.0V
≤ V
IN
≤ 5.5V
V
DX
≤ 3.8V
BRGT = 50mV
15
16.8
mA
2.7V
≤ V
IN
≤ 3.0V
V
DX
≤ 3.6V
BRGT = 0V
10
mA
V
DX
≤ 3.8V
BRGT = 200mV
20
mA
V
DX
Available Voltage at Output Dx
3.0V
≤ V
IN
≤ 5.5V
I
DX
≤ 15mA
BRGT = 50mV
3.8
V
I
DX
Line Regulation of Dx Output
Current
3.0V
≤ V
IN
≤ 5.5V
V
DX = 3.6V
14.18
15.25
16.78
mA
3.0V
≤ V
IN
≤ 4.4V
V
DX = 3.6V
14.18
15.25
16.32
mA
I
DX
Load Regulation of Dx Output
Current
V
IN = 3.6V
3.0V
≤ V
DX
≤ 3.8V
14.18
15.25
16.32
mA
I
D-MATCH
Current Matching Between Any
Two Outputs
V
IN = 3.6V, VDX = 3.6V
0.5
%
I
Q
Quiescent Supply Current
3.0V
≤ V
IN
≤ 4.2V, Active, No
Load Current
R
SET = OPEN
5.5
8.2
mA
I
SD
Shutdown Supply Current
3.0V
≤ V
IN
≤ 5.5V, Shutdown
2.3
5
µA
I
PULL-SD
Shutdown Pull-Up Current
(LM2795)
V
IN = 3.6V
1.5
µA
V
CP
Input Charge-Pump Mode To
Pass Mode Threshold
4.7
V
V
CPH
Input Charge-Pump Mode To
Pass Mode Hysteresis
(Note 5)
250
mV
V
IH
SD Input Logic High (LM2794)
3.0V
≤ V
IN
≤ 5.5V
1.0
V
SD Input Logic High (LM2795)
0.8V
IN
V
IL
SD Input Logic Low (LM2794)
3.0V
≤ V
IN
≤ 5.5V
0.2
V
SD Input Logic Low (LM2795)
0.2V
IN
I
LEAK-SD
SD Input Leakage Current
0V
≤ V
SD
≤ V
IN
100
nA
R
BRGT
BRGT Input Resistance
240
k
Ω
I
SET
I
SET Pin Output Current
I
DX/10
mA
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