SC1544 データシートの表示（PDF） - Semtech Corporation

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SC1544

ACPI Controller for Advanced Motherboards

Semtech Corporation 

SC1544

POWER MANAGEMENT

PRELIMINARY

Electrical Characteristics (Cont.)(1)

Unless specified: all applicable silver box supplies (3.3V, 5V, 5VSB) ± 5%, GND = 0V, VSENSE PINS = VOUT(NOM), TA = 25°C. Values in bold apply over full

operating ambient temperature range.

Parameter

Symbol

Test Conditions

Min Typ Max Units

1.8V Output (Cont.)

Line Regulation(3)

REGLINE

Load Regulation(3)

REGLOAD

Gate 8 Drive Voltage(4)

V

G8(HI)

VG8(LO)

Gate 8 Drive Current(4)

IG8(SOURCE)

IG8(SINK)

Sense Pin Bias Current

I1.8V

2.5V/3.3V Dual Memory Output

V5VSB = 4.75V to 5.25V, IOUT = 0A

V5VSB = 5V, IOUT = 0A to 720mA

V = 1.7V, I = 10µA

1.8V

G8

S3, IG8 = -10µA

V1.8V = 1.7V, VG8 = 5V

V1.8V = 1.9V, VG8 = 3V

Sinking, V1.8V = 1.8V

0.01 0.10 %

0.01 0.20 %

8.00 8.75

V

0.8

1.0

2

4

mA

-3.5

-5

-70 -100 -130 µA

Output Voltage(5)

V3.3VDM

1mA ≤ IOUT ≤ 720mA

-1.5 VOUT(NOM) +1.5

%

-2.5

+2.5

Line Regulation(5)

Load Regulation(5)

Gate 5 Drive Voltage(6)

Gate 5 Drive Current(6)

Gate 6 Drive Voltage(7)

Gate 6 Drive Current(7)

Sense Pin Bias Current

3.3V Dual Output

REGLINE

REGLOAD

VG5(HI)

VG5(LO)

IG5(SOURCE)

IG5(SINK)

VG6(HI)

VG6(LO)

IG6(SOURCE)

IG6(SINK)

I3.3VDM

V5VSB = 4.75V to 5.25V, IOUT = 0A

V5VSB = 5V, IOUT = 0A to 720mA

V3.3VDM = VOUT(NOM) - 100mV, IG5 = 10µA, S0

IG5 = -10µA, S3

V3.3VDM = VOUT(NOM) - 100mV, VG5 = 5V, S0

V3.3VDM = VOUT(NOM) + 100mV, VG5 = 3V, S0

V3.3VDM = VOUT(NOM) - 100mV, IG6 = 10µA, S3

IG6 = -10µA, S0

V3.3VDM = VOUT(NOM) - 100mV, VG6 = 5V, S3

V3.3VDM = VOUT(NOM) + 100mV, VG6 = 3V, S3

Sinking, 3.3V option, V3.3VDM = 3.3V

Sinking, 2.5V option, V3.3VDM = 2.5V

8.00

2

-3.5

8.00

2

-3.5

-330

-215

0.01

0.01

8.75

0.8

4

-5

8.75

0.8

4

-5

-475

-310

0.10 %

0.20 %

V

1.0

mA

V

1.0

mA

-620 µA

-405

Output Voltage(8)

V3.3VD

1mA ≤ IOUT ≤ 720mA

3.250 3.300 3.350 V

3.217

3.383

Line Regulation(8)

Load Regulation(8)

REGLINE

REG

LOAD

V5VSB = 4.75V to 5.25V, IOUT = 0A

V = 5V, I = 0A to 720mA

5VSB

OUT

0.01 0.10 %

0.01 0.20 %

 2002 Semtech Corp.

3

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