LM2596 Просмотр технического описания (PDF) - Estek Electronics Co. Ltd
Номер в каталоге
Компоненты Описание
производитель
LM2596 Datasheet PDF : 13 Pages
| |||
LM2596
Note 6: The switching frequency is reduced when the second stage current limit is activated. The amount of reduction is
determined by the severity of current over-load.
Note 7: No diode, inductor or capacitor connected to output pin.
Note 8: Feedback pin removed from output and connected to 0V to force the output transistor switch ON.
Note 9: Feedback pin removed from output and connected to 12V for the 3.3V, 5V, and the ADJ. version, and 15V for the 12V
version, to force the output transistor switch OFF.
Note 10: VIN = 40V.
Note 11: Junction to ambient thermal resistance (no external heat sink) for the TO-220 package mounted vertically, with the leads
soldered to a printed circuit board with (1 oz.) copper area of approximately 1 in2
Note 12: Junction to ambient thermal resistance with the TO-263 package tab soldered to a single printed circuit board with 0.5 in2
of (1 oz.) copper area.
Note 13: Junction to ambient thermal resistance with the TO-263 package tab soldered to a single sided printed circuit board with
2.5 in2 of (1 oz.) copper area.
Note 14: Junction to ambient thermal resistance with the TO-263 package tab soldered to a double sided printed circuit board with
3 in2 of (1 oz.) copper area on the LM2596S side of the board, and approximately 16 in2 of copper on the other side of the p-c
board.
TYPICAL PERFORMANCE CHARACTERISTICS (Circuit of Figure 1)
Normalized Output Voltage
Line Regulation
1.5
0.4
1.0
0.3
0.2
0.5
0.1
0
0
- 0.5
- 1.0
-0.4-50 -25
- 0.1
- 0.2
- 0.3
0 25 50 75
035 540 10 15 20 25 30
INPUT VOLTAGE (V)
Switch Saturation
1.4
Voltage
1.3
VIN= 12V
1.2
1.1
T = 0-40 C
1.0
0.9
0.8
0.7 250C
0.6
0125 C
0
1
23
4
SWITCH CURRENT (A)
Switch Current Limit
5.5
V = 12VIN
VOUT = 5V
5.0
4.5
4.0
3.5
-50 -25 0 25 50
75
Efficiency
95
20V
90
12V
85
80
5V
75
70
65
0 5 10 15 20 25 30
35 40
Dropout Voltage
1.6
1.4
1.2
I 3A
=LOAD
1.0
I
0.8
= 1A
0.6
-50 -25 0 25 50
75
BEIJING ESTEK ELECTRONICS CO.,LTD
4
Share Link: 