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LM2655 Datasheet(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part No. LM2655
Description  2.5A High Efficiency Synchronous Switching Regulator
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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LM2655 Datasheet(HTML) 4 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.
Supply Voltage (PV
IN)
3.8V
≤ V
IN ≤ 14V
Supply Voltage (AV
IN)
4.0V
≤ V
IN ≤ 14V
Feedback Pin Voltage
-0.4V
≤ V
FB ≤ 5V
V
CB Voltage, (Note 7)
7V
C
SS Voltage
2.5V
Comp Voltage
2.5V
L
DELAY Voltage
2.5V
LDR Voltage
5V
V
SW, (Note 8)
14V
Power Dissipation (T
A =25˚C),
(Note 2)
TSSOP-16 Package
θ
JA
140˚C/W
Power Dissapation
893mW
Lead Temperature
Vapor Phase (60 sec.)
215˚C
Infrared (15 sec.)
220˚C
ESD Susceptibility(Note 3)
Human Body Model(Note 4)
1kV
Machine Model
200V
Operating Ratings (Note 1)
Storage Temperature Range
−65˚C
≤ T
J ≤ +150˚C
Junction Temperature
Range
−40˚C
≤ T
J ≤ +125˚C
LM2655-3.3 Electrical Characteristics
Specifications with standard typeface are for T
J = 25˚C, and those in boldface type apply over full Operating Temperature
Range.V
IN = 10V unless otherwise specified.
Symbol
Parameter
Conditions
Typical
(Note 5)
Limit
(Note 6)
Units
V
OUT
Output Voltage
I
LOAD = 1.5 A
3.3
3.235/3.185
3.392/3.416
V
V(min)
V(max)
V
OUT
Output Voltage Line
Regulation
V
IN = 5V to 14V
I
LOAD = 1.5 A
0.5
0.7
%
%(max)
Output Voltage Load
Regulation
I
LOAD = 100 mA to 2.5A
V
IN =10V
0.6
1.7
%
%(max)
V
INUV
V
IN Undervoltage Lockout
Threshold Voltage
Rising Edge
3.8
3.95
V
V(max)
V
UV_HYST
Hysteresis for the Input
Undervoltage Lockout
210
mV
I
CL(Note 9)
Average Output Current
Limit
V
IN = 5V
V
OUT = 3.3V
3.3
A
LM2655-ADJ Electrical Characteristics
Specifications with standard typeface are for T
J = 25˚C, and those in boldface type apply over full Operating Temperature
Range.V
IN = 10V unless otherwise specified.
Symbol
Parameter
Conditions
Typical
(Note 5)
Limit
(Note 6)
Units
V
FB
Feedback Voltage
I
LOAD = 1.5 A
1.238
1.208/1.181
1.260/1.267
V
V(min)
V(max)
V
OUT
Output Voltage Line
Regulation
V
IN = 5V to 14V
I
LOAD = 1.5 A
0.5
0.7
%
%(max)
Output Voltage Load
Regulation
I
LOAD = 100 mA to 2.5A
V
IN =10V
0.6
1.7
%
%(max)
V
INUV
V
IN Undervoltage Lockout
Threshold Voltage
Rising Edge
3.8
3.95
V
V(max)
V
UV_HYST
Hysteresis for the Input
Undervoltage Lockout
210
mV
I
CL(Note 9)
Average Output Current
Limit
V
IN = 5V
V
OUT = 3.3V
3.3
A
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