LM2596S-12 National Semiconductor, LM2596S-12 Datasheet - Page 4

• Manufacturer Part Number: LM2596S-12
• Description: DC/DC Converter IC
• Manufacturer: National Semiconductor

Specifications of LM2596S-12

• Input Voltage: 40V
• Output Current: 3A
• Output Voltage: 12V
• No. Of Pins: 5
• Termination Type: SMD
• Mounting Type: Through Hole
• Voltage Regulator Type: Buck Switching
• Output Current Max: 3A
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

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SYSTEM PARAMETERS (Note 5) Test Circuit Figure 1
V
DEVICE PARAMETERS
I
f
V
DC
I
I
I
I
ON/OFF CONTROL Test Circuit Figure 1
V
V
Symbol
b
O
CL
L
Q
STBY
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion. I
JC
JA
JA
JA
JA
Specifications with standard type face are for T
ture Range
SAT
IH
IL
Symbol
FB
LM2596-ADJ
Electrical Characteristics
All Output Voltage Versions
Electrical Characteristics
LOAD
Feedback Bias Current
Oscillator Frequency
Saturation Voltage
Max Duty Cycle (ON)
Min Duty Cycle (OFF)
Current Limit
Output Leakage Current
Quiescent Current
Standby Quiescent
Current
Thermal Resistance
ON /OFF Pin Logic Input
Threshold Voltage
= 500 mA
Feedback Voltage
Efficiency
Parameter
Parameter
4.5V
V
V
OUT
IN
= 12V, V
programmed for 3V. Circuit of Figure 1
Adjustable Version Only, V
(Note 6)
I
(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)
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)
OUT
V
IN
IN
= 12V for the 3.3V, 5V, and Adjustable version and V
= 3A (Notes 7, 8)
OUT
J
J
40V, 0.2A
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 25˚C, and those with boldface type apply over full Operating Tempera-
Conditions
= 3V, I
LOAD
Conditions
I
LOAD
4
= 3A
FB
3A
(Note 10)
= 1.3V
(Note 3)
1.230
Typ
73
LM2596-ADJ
(Note 3)
1.16
Typ
150
100
4.5
1.3
10
80
50
50
30
20
0
2
5
2
LM2596-XX
IN
1.193/1.180
1.267/1.280
= 24V for the 12V ver-
(Note 4)
Limit
(Note 4)
127/110
173/173
200/250
50/100
1.4/1.5
3.6/3.4
6.9/7.5
Limit
0.6
2.0
50
30
10
kHz(max)
nA (max)
kHz(min)
mA(max)
mA(max)
(Limits)
µA(max)
µA(max)
(Limits)
V(max)
V(max)
A(max)
V(max)
V(min)
A(min)
V(min)
Units
Units
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
kHz
mA
mA
nA
µA
%
%
V
V
A
V