LM2595
12 V
Unregulated
Feedback
R1=1K
DC Input
+Vin
LM2595
4
L1
68 m H
Cff
R2=3.0K
2
Output
Cin
220 m F/
50 V
3
GND
5
ON/OFF
1
D1
Cout
220 m F
5V@1A
Regulated
Output
1N5822
Figure 1. Typical Application
Figure 2. Representative Block Diagram
MAXIMUM RATINGS
Rating
Maximum Supply Voltage
ON/OFF Pin Input Voltage
Output Voltage to Ground (Steady ? State)
Symbol
V in
ON/OFF
Output
Value
45
? 0.3 V ≤ V ≤ +V in
? 1.0
Unit
V
V
V
Power Dissipation
Case 314B and 314D (TO ? 220, 5 ? Lead)
Thermal Resistance, Junction ? to ? Ambient
Thermal Resistance, Junction ? to ? Case
P D
R q JA
R q JC
Internally Limited
65
5.0
W
° C/W
° C/W
Case 936A
(D 2 PAK)
P D
Internally Limited
W
Thermal Resistance, Junction ? to ? Ambient
Thermal Resistance, Junction ? to ? Case
Storage Temperature Range
Minimum ESD Rating (Human Body Model: C = 100 pF, R = 1.5 k W )
Lead Temperature (Soldering, 10 seconds)
Maximum Junction Temperature
R q JA
R q JC
T stg
?
?
T J
70
5.0
? 65 to +150
2.0
260
150
° C/W
° C/W
° C
kV
° C
° C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
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