RC5058(1999) データシートの表示（PDF） - Fairchild Semiconductor

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RC5058
(Rev.:1999)

High Performance Programmable Synchronous DC-DC Controller for Multi-Voltage Platforms

Fairchild Semiconductor 

RC5058

Typical Operating Characteristics (continued)

2.042

2.040

2.038

2.036

2.034

2.030

2.028

2.026

0

25

70

100

Temperature (°C)

Linear Regulator Noise

Time (100µs/div)

Application Circuit

L1

(Optional)

+5V

CIN*

R6

C1

R7

R5

C2

VO

COUT*

C10 C11

R2

Q1

L2

Q2

D1

R3

3.3V IN

Q3

1.5V†

C8

Q4

2.5V†

C9

1

2

3

VID4

4

VID3

5

VID2

VID1

6

7

VID0

8

9

10

11

12

U1

RC5058

24

23

22

21

20

19

18

17

16

15

14

TYPEDET

13

C12

R1

+12V

C5

C3

VCC

Q5

C4

3.3/1.5V

(AGP)†

C7

ENABLE/SS

R4

PWRGD

C6

* Refer to Table 4 for values of CIN and COUT.

† Adjustable with an external divider.

Figure 1. Application Circuit for Katmai/Camino/BX/ZX Motherboards

(Worst Case Analyzed! See Appendix for Details)

8

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