KA7818E 查看數據表（PDF） - Fairchild Semiconductor

零件编号

产品描述 (功能)

生产厂家

KA7818E

3-Terminal 1 A Positive Voltage Regulator

Fairchild Semiconductor 

Typical Applications (Continued)

Input

CI

1

0.33μF

KA7805E

2

3

6

-2

KA741

+3

4

Output

10KΩ

CO

0.1μF

Input

VI

IRI ≥ 5 IQ

VO = VXX(1+R2/R1) + IQR2

Figure 12. Adjustable Output Regulator (7 V to 30 V)

IQ1

R1

1

3

KA78XXE

3Ω

IREG

2

0.33 μF

Output

Io

Vo

0.1 μF

IO = IREG + BQ1 (IREG-VBEQ1/R1)

Figure 13. High-Current Voltage Regulator

Input

VI

Q1

Q2

R1

3Ω

Q1 = TIP42

Q2 = TIP42

1

0.33 μF

KA78XXE 3

2

0.1 μF

RSC = VBEQ2

ISC

Figure 14. High Output Current with Short-Circuit Protection

Vo

Output

© 2006 Fairchild Semiconductor Corporation

KA78XXE / KA78XXAE Rev. 1.9

22

www.fairchildsemi.com

Share Link: