lm2595sx-adj National Semiconductor Corporation, lm2595sx-adj Datasheet - Page 4

• Manufacturer Part Number: lm2595sx-adj
• Description: Simple Switcher Power Converter 150 Khz 1a Step-down Voltage Regulator
• Manufacturer: National Semiconductor Corporation

www.national.com
Symbol
Symbol
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
b
O
CL
L
Q
STBY
Specifications with standard type face are for T
ture Range.
Specifications with standard type face are for T
ture Range. Unless otherwise specified, V
sion. I
JC
JA
JA
JA
JA
LM2595-ADJ
Electrical Characteristics
FB
All Output Voltage Versions
Electrical Characteristics
SAT
IH
IL
LOAD
Feedback Voltage
Efficiency
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
= 200 mA.
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
(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)
Output = −1V
OUT
V
IN
IN
= 1A (Notes 7, 8)
= 12V for the 3.3V, 5V, and Adjustable version and V
OUT
40V, 0.1A
J
J
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 25˚C, and those with boldface type apply over full Operating Tempera-
= 3V, I
Conditions
(Notes 7, 9) and (Note 10)
LOAD
Conditions
I
LOAD
4
= 1A
FB
1A
(Note 10)
= 1.3V
(Note 3)
1.230
Typ
78
(Note 3)
LM2595-ADJ
Typ
150
100
1.5
1.3
10
85
50
50
30
20
1
0
2
5
2
LM2595-XX
IN
= 24V for the 12V ver-
1.193/1.180
1.267/1.280
(Note 4)
Limit
(Note 4)
127/110
173/173
1.2/1.15
200/250
50/100
1.2/1.3
2.4/2.6
Limit
0.6
2.0
50
15
10
kHz(max)
nA (max)
mA(max)
mA(max)
kHz(min)
µA(max)
µA(max)
(Limits)
(Limits)
V(max)
V(max)
A(max)
V(max)
A(min)
V(min)
V(min)
Units
Units
˚C/W
˚C/W
˚C/W
˚C/W
˚C/W
kHz
mA
mA
nA
µA
%
%
V
A
V
V