IC, STEP-DOWN VOLTAGE REGULATOR, TO-220

LM2596T-ADJ

Manufacturer Part NumberLM2596T-ADJ
DescriptionIC, STEP-DOWN VOLTAGE REGULATOR, TO-220
ManufacturerNational Semiconductor
LM2596T-ADJ datasheet
 


Specifications of LM2596T-ADJ

Primary Input Voltage40VNo. Of Outputs1
Output Voltage37VOutput Current3A
No. Of Pins5Operating Temperature Range-40°C To +125°C
Supply Voltage Range4.5V To 40VFilter TerminalsThrough Hole
Rohs CompliantYesLead Free Status / RoHS StatusLead free / RoHS Compliant
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LM2596-ADJ
Electrical Characteristics
Specifications with standard type face are for T
ture Range
Symbol
Parameter
SYSTEM PARAMETERS (Note 5) Test Circuit Figure 1
V
Feedback Voltage
4.5V
FB
V
OUT
Efficiency
V
IN
All Output Voltage Versions
Electrical Characteristics
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion. I
= 500 mA
LOAD
Symbol
Parameter
DEVICE PARAMETERS
I
Feedback Bias Current
b
f
Oscillator Frequency
O
V
Saturation Voltage
SAT
DC
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
I
Current Limit
CL
I
Output Leakage Current
L
I
Quiescent Current
Q
I
Standby Quiescent Current
STBY
Thermal Resistance
JC
JA
JA
JA
JA
ON/OFF CONTROL Test Circuit Figure 1
ON /OFF Pin Logic Input
V
Threshold Voltage
IH
V
IL
www.national.com
= 25˚C, and those with boldface type apply over full Operating Tempera-
J
Conditions
V
40V, 0.2A
I
3A
IN
LOAD
programmed for 3V. Circuit of Figure 1
= 12V, V
= 3V, I
= 3A
OUT
LOAD
= 25˚C, and those with boldface type apply over full Operating Tempera-
J
= 12V for the 3.3V, 5V, and Adjustable version and V
IN
Conditions
Adjustable Version Only, V
= 1.3V
FB
(Note 6)
I
= 3A (Notes 7, 8)
OUT
(Note 8)
(Note 9)
Peak Current (Notes 7, 8)
Output = 0V (Notes 7, 9)
Output = −1V (Note 10)
(Note 9)
ON/OFF pin = 5V (OFF)
(Note 10)
TO-220 or TO-263 Package, Junction to Case
TO-220 Package, Junction to Ambient (Note 11)
TO-263 Package, Junction to Ambient (Note 12)
TO-263 Package, Junction to Ambient (Note 13)
TO-263 Package, Junction to Ambient (Note 14)
Low (Regulator ON)
High (Regulator OFF)
4
LM2596-ADJ
Units
Typ
Limit
(Limits)
(Note 3)
(Note 4)
1.230
V
1.193/1.180
V(min)
1.267/1.280
V(max)
73
%
= 24V for the 12V ver-
IN
LM2596-XX
Units
Typ
Limit
(Limits)
(Note 3)
(Note 4)
10
nA
50/100
nA (max)
150
kHz
127/110
kHz(min)
173/173
kHz(max)
1.16
V
1.4/1.5
V(max)
100
%
0
4.5
A
3.6/3.4
A(min)
6.9/7.5
A(max)
50
µA(max)
2
mA
30
mA(max)
5
mA
10
mA(max)
80
µA
200/250
µA(max)
2
˚C/W
50
˚C/W
50
˚C/W
30
˚C/W
20
˚C/W
1.3
V
0.6
V(max)
2.0
V(min)