lm27953tlx National Semiconductor Corporation, lm27953tlx Datasheet - Page 3

• Manufacturer Part Number: lm27953tlx
• Description: White Led Driver With Four Led Current Sinks And 3/2x Switched Capacitor Boost
• Manufacturer: National Semiconductor Corporation

I
I
I
I
V
I
R
V
f
Dx
Dx-MATCH
Q
SD
Dx
SW
Symbol
SET
HR
OUT
Absolute Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Electrical Characteristics
Limits in standard typeface are for T
less otherwise specified: V
/I
V
EN pin voltages
I
Continuous Power Dissipation
(Note 3)
Junction Temperature (T
Storage Temperature Range
Maximum Lead Temperature
(Soldering, 10 sec.)
ESD Rating (Note 4)
Human Body Model - I
Human Body Model - All other Pins:
Machine Model - I
Machine Model - All Other Pins:
Dx
SET
IN
Pin Voltages
pin voltage
Output Current Regulation
Current Matching Between
Outputs
Quiescent Supply Current
Shutdown Supply Current
I
Output Current to Current Set
Ratio
Charge Pump Output Resistance
(Note 10)
Current Source Headroom
Voltage Requirement (Note 11)
Switching Frequency
SET
Pin Voltage
Dx
Parameter
Pins:
Dx
J-MAX
Pins:
IN
= 3.6V; V
)
J
= 25˚C, and limits in boldface type apply over the full operating temperature range. Un-
Dx
-0.3V to (V
-65
= 0.6V; EN = 1.5V; R
Internally Limited
(Notes 2, 7)
3.0V ≤ V
0.45V ≤ V
R
3.0V ≤ V
0.6V ≤ V
R
3.0V ≤ V
0.3V ≤ V
R
2.7V ≤ V
0.45V ≤ V
R
V
2.7V ≤ V
No Load Current,
EN = ON
2.7V ≤ V
ENA OFF
2.7V ≤ V
V
I
R
(I
3.0V ≤ V
o
Dx
(V
-0.3V to 7.1V
C to +150
Dx
SET
SET
SET
SET
IN
IN
SET
w/ 6.0V max
w/ 6.0V max
(Notes 1, 2)
POUT
= 95% X I
= 3.0V (Note 9)
= 3.0V
(nom) ≈ 15mA)
= 8.35kΩ
= 6.25kΩ
= 12.5kΩ
= 8.35kΩ
= 8.35kΩ
IN
-0.3V to
+0.3V)
+0.3V)
150
265
1.0kV
2.0kV
IN
IN
Dx
IN
Dx
IN
IN
IN
IN
IN
100V
200V
Dx
Dx
o
≤ 4.2V, and V
≤ 5.5V;
≤ 5.5V;
≤ 3.0V;
≤ 4.2V;
≤ 5.5V,
≤ 5.5V
≤ 4.2V
≤ 3.8V
≤ 3.8V
o
o
C
C
C
≤ 3.8V
≤ 3.8V
Dx
(nom)
Condition
SET
3
Operating Rating
Thermal Properties
= 8.35kΩ; C
Input Voltage Range
Junction Temperature (T
Ambient Temperature (T
(Note 5)
Juntion-to-Ambient Thermal
Resistance (θ
IN
= 5.5V
IN
, C
JA
), (Note 6)
1
, C
2
, and C
A
J
) Range
(-10%)
) Range
13.5
Min
375
POUT
(Notes 1, 2)
= 1µF. (Note 8)
1.25
Typ
100
320
500
0.6
4.4
2.3
2.7
15
20
10
15
-30˚C to +125˚C
-30˚C to +85˚C
(+10%)
2.7V to 5.5V
Max
16.5
6.75
625
5
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100˚C/W
Units
kHz
(%)
mA
mA
mA
mA
mA
mV
µA
%
Ω
V