Voltage regulators, Intel, Vcc 3.3v standby voltage switch – Intel 815 User Manual

Page 204

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background image

5

5

4

4

3

3

2

2

1

1

D

D

C

C

B

B

A

A

SN74LVC07A HAS 5V INPUT AND OUTPUT TOLERANCE

DO NOT POPULATE

DO NOT POPULATE

PLACE C99 AT
THE REGULATOR

LT1587-ADJ

LT1587ADJ

LT1117-3_3

LT1587ADJ

VCC 3.3V Standby VOLTAGE SWITCH

This generates 3.3V Standby Power which is on in
S0, S1, S3, S4 & S5. It passes 3.3V from the ATX
supply in S0/S1, and 3.3VSB (generated by VR2
below) in S3/S4/S5.

VCC 1.8 VOLTAGE REGULATOR

VCC 3.3VSB REGULATOR

VTT 1.5V VOLTAGE REGULATOR

VCC 2.5 VOLTAGE REGULATOR

NPOP

Voltage Regulators

2.0 ms

delay

nominal

INTEL(R) 82815 CHIPSET CUSTOMER REFERENCE BOARD

VOLTAGE REGULATORS

40

1.0

3-26-01

31

Platform Apps Engineering

1900 Prairie City Road
Folsom, CA 95630

REV.

R

Last Revision Date:

Sheet:

of

Title:

intel

R175_D

PLANE_CTL1

PCTL_IN

V_GQ6

PLANE_CTL0

VR1_ADJ

VR5_ADJ

SLP_S3#

13,35

PWROK

13,30,35

TUAL5

4,5,7

VTTPW RGD5#

33

VTTPWRGD

4

VTTPW RGD12

5

VCC3_3

VCC1_8

VCC5

VCC5SBY

VCC5DUAL

VCC5

VCC5

VCC2_5

VCC5DUAL

VCC5SBY

V3SB

VCC3SBY

V3SB

VCC3_3

VCC5SBY

VCC3SBY

VCC5SBY

VCC12

VCC3_3

VCC5

VTT

VCC12

VTT

VCC5

VCC5

V1_8SB

V1_8SB

VCC5

VCC5

R89

0K

1

2

R176

0K

1

2

R175

0K

1

2

R82

243 1%

1

2

C65

1200UF

1

2

C63

1200UF

1

2

C57

47UF

1

2

C56

47UF

1

2

C105

1200UF

1

2

C64

1200UF

1

2

C104

47UF

1

2

C110

47UF

1

2

C62

22UF-TANT

1

2

C16

22uF-Tant

1

2

C162

22UF-TANT

1

2

C103

1.0UF

1

2

C99

100UF-TANT

1

2

C98

100UF-TANT

1

2

C61

100UF-TANT

1

2

U8A

SN74LVC07A

2

14

7

1

VR2

1

2

3

GND

OUT

IN

C14

10uF

1

2

C111

0.1UF

1

2

U9A

74LS132

3

14

1

2

7

+

-

U72B

LM393A

5

6

7

4

8

+

-

U72A

LM393A

3

2

1

4

8

R319

2.2k

1

2

R316

1k

1

2

Q22

MOSFET N

R314

20k

1

2

R318

732 1%

1

2

Q23
MOSFET N

R320

1k 1%

1

2

C437

0.1UF

1

2

R315

49.9 1%

1

2

R317

10 1%

1

2

Q21

MOSFET N

R321

1k

1

2

D1

BAT54C

2

1

3

C438

0.1UF

1

2

Q5

SI4410DY

1

2

3

4

5
6
7
8

U2

SI4410DY

1

2

3

4

5
6
7
8

U3

SI4410DY

1

2

3

4

5
6
7
8

Q4

NDS356AP

G

S

D

G

S

D

Q1

NDS356AP

G

S

D

G

S

D

Q2

NDS356AP

G

S

D

G

S

D

Q7

SI4410DY

1

2

3

4

5
6
7
8

CR1

1

2

CR2

1N5822

1

2

Q3

MMBT3904LT1

Q6

NDS356AP

G

S

D

G

S

D

VR1

3

2

1

VIN

VOUT

ADJ

R92

10K

1

2

VR5

3

2

1

VIN

VOUT

ADJ

VR3

3

2

1

VIN

VOUT

ADJ

R83

243 1%

1

2

R33

220 1%

1

2

R32

470 1%

1

2

R31

4.7K

1

2

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