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参数资料
| 型号： | TC2576-3.3VAT |
| 元件分类： | 稳压器 |
| 英文描述： | 7.5 A SWITCHING REGULATOR, 63 kHz SWITCHING FREQ-MAX, PSFM5 |
| 封装： | TO-220, 5 PIN |
| 文件页数： | 11/25页 |
| 文件大小： | 213K |
| 代理商： | TC2576-3.3VAT |
19
TC2576
TC2576-2 12/04/00
3.0A Step-Down Switching Regulator
2001 Microchip Technology Inc.
DS21399A
Figure 17. Schematic Diagram of the TC2576 (5V) Step-Down Converter
The TC2576 Step-Down Voltage Regulator with 5.0V @ 3.0A Output Power Capability.
Typical Application with Through-Hole PC Board Layout
D1
1N5819
L1
150
F
Output
2
4
Feedback
Unregulated
DC Input
+VIN = 7.0 to 40 V
C2
1000
F/16V
C1
100
F/50V
TC2576
1
3
5
GND
+VIN
Regulated Output
VOUT = 5.0V @ 3.0A
GNDIN
C1 – 100
F, 50V, Aluminum Electrolytic
C2 – 1000
F, 16V, Aluminum Electrolytic
D1 – 3.0A, 40V, Schotty Rectifier, 1N5822
L1 – 150
H, RL-2444, Renco Electronics
GND
ON/OFF
Figure 18. Schematic Diagram of the 8.0V @ 3.0A Step-Down Converter Using the TC2576-ADJ
D1
1N5822
L1
150mH
Output
2
4
Feedback
R2
6.12 k
R1
1.8k
Regulated
Output Filtered
VOUT = 8.0 V @ 3.0A
Unregulated
DC Input
C2
1000
F/16V
C3
100
F
C1
100
F
/50V
TC2576-ADJ
1
5
ON/OFF
GND
+VIN
3
+VIN = 10 to 40V
GND
The TC2576-ADJ Step-Down Voltage Regulator with 8.0V @ 1.0A Output Power Capability.
Typical Application with Through-Hole PC Board Layout
C1 – 100
F, 63V, Aluminum Electrolytic
C2 – 1000
F, 16V, Aluminum Electrolytic
D1 – 3.0A, 40V, Schotty Rectifier, 1N5822
L1 – 150
H, RL444, Renco Electronics
R1 – 1.8k
, 0.25W
R2 – 10k
, 0.25W
VOUT = VREF +
( 1.0 + R2)
R1
VREF = 1.23V
R1 is between 1.0k and 5.0k
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