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LM2796 датащи(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
номер детали LM2796
подробное описание детали  Dual-Display White LED Driver with 3/2x Switched Capacitor Boost
PDF  8 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2796 датащи(HTML) 3 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Notes 1, 2)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
V
IN pin voltage
-0.3V to 7.1V
EN, ENA, ENB pin voltages
-0.3V to (V
IN+0.3V)
w/ 5.6V max
Continuous Power Dissipation
(Note 3)
Internally Limited
Junction Temperature (T
J-MAX)
150oC
Storage Temperature Range
-65oC to +150o C
Maximum Lead Temperature
(Soldering, 10 sec.)
265oC
ESD Rating (Note 4)Human Body
Model:
Machine Model
2.0kV
200V
Operating Rating (Notes 1, 2)
Input Voltage Range
2.7V to 5.5V
Junction Temperature (T
J) Range
-30˚C to +125˚C
Ambient Temperature (T
A) Range
(Note 5)
-30˚C to +85˚C
Thermal Properties
Juntion-to-Ambient Thermal
Resistance (
θ
JA), (Note 6)
100˚C/W
Electrical Characteristics (Notes 2, 7)
Limits in standard typeface and typical values apply for T
J =25
oC. Limits in boldface type apply over the full operating junction
temperature range (-30˚C
≤ T
J
≤ +85˚C) . Unless otherwise specified: V
IN = 3.6V; VDxx = 3.6V; V(EN) = 2.0V; Group A and
Group B LEDs not ON simultaneously (ENA = V
IN and ENB = GND, or ENA = GND and ENB = VIN); RSET = 8.35k
Ω;C
IN,C1,
C
2, and CPOUT = 1µF. (Note 8)
Symbol
Parameter
Condition
Min
Typ
Max
Units
I
Dxx
Output Current Regulation
3.0V
≤ V
IN
≤ 4.2V, and V
IN = 5.5V
2.5V
≤ V
Dxx
≤ 3.8V;
R
SET = 8.35k
Ω
13.8
(-8%)
15
16.2
(+8%)
mA
(%)
3.0V
≤ V
IN
≤ 5.5V;
2.5V
≤ V
Dxx
≤ 3.6V;
R
SET = 6.25k
Ω
20
mA
3.0V
≤ V
IN
≤ 5.5V;
2.5V
≤ V
Dxx
≤ 3.9V;
R
SET = 12.5k
Ω
10
mA
2.7V
≤ V
IN
≤ 3.0V;
2.5V
≤ V
Dxx
≤ 3.3V;
R
SET = 8.35k
Ω
15
mA
ENA and ENB ON (all 7 I
DX outputs active),
V
IN = 3.0V, CIN =COUT = 2.2µF
15
mA
I
Dxx-MATCH Current Matching Between Any
Two Group A Outputs or Group
B Outputs
V
IN = 3.0V (Note 10)
1
%
I
Q
Quiescent Supply Current
2.7V
≤ V
IN
≤ 4.2V;
No Load Current,
EN = ON, ENA = ENB = OFF
3.5
6
mA
I
SD
Shutdown Supply Current
2.7V
≤ V
IN
≤ 5.5V, EN = OFF
3
4.5
µA
V
SET
I
SET Pin Voltage
2.7V
≤ V
IN
≤ 5.5V
1.25
V
I
Dxx/ISET
Output Current to Current Set
Ratio
100
R
OUT
Charge Pump Output Resistance
(Note 11)
V
IN = 3.0V
2.7
Ω
V
HR
Current Source Headroom
Voltage Requirement (Note 12)
I
Dxx =95%XIDxx (nom)
R
SET = 8.35k
Ω
(I
Dxx (nom)
≈ 15mA)
320
mV
I
Dxx = 95%X IDxx (nom)
R
SET = 12.5k
Ω
(I
Dxx (nom)
≈ 10mA)
220
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