FAN5078D3 查看數據表（PDF） - Fairchild Semiconductor

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FAN5078D3

Complete ACPI Compliant Power Solution for DDR3 Memory System

Fairchild Semiconductor 

Electrical Specifications (Continued)

Parameter

PWM Output Driver

HDRV Output Resistance

LDRV Output Resistance

PGOOD output

Lower Threshold

Upper Threshold

PGOOD Output Low

Leakage Current

3.3V LDO

Regulation

VTT Regulator

VDDQ IN Current

VREF IN to VTT Differential Output

Voltage

VTT Current Limit

VTT Leakage Current

VTT SNS Input Resistance

Conditions

Sourcing

Sinking

Sourcing

Sinking

as % of set point, 2μs noise filter

as % of set point, 2μs noise filter

IPGOOD = 1.5 mA

VPULLUP = 5V

I(3.3) from 0-1.25A, VCC > 4.75V

S0 mode, IVTT=0

IVTT = 0, TA=25°C

IVTT = ± 1.25A (pulsed)

Pulsed (300ms maximum)(1)

EN = LOW

VTT SNS to GND

VTT PGOOD Threshold

Measured at VTT SNS

Drop-out Voltage

Control Functions

IVTT = ±1.5A

EN, S4ST# Input Threshold

S3#I Input Threshold

S3#I, EN, S4ST# Input Current

Over-Temperature Shutdown

Over-Temperature Hysteresis

S3#O Output Low RDS(ON)

S3#O Output High Leakage

V(S3#O) = 12V

SBSW Pull-down Resistance

5V MAIN OK

SBSW Pull-up Resistance

SBUSB# Pull-down Resistance

5V MAIN OK

SBUSB# Pull-up Resistance

SBSW, SBUSB# Output Current

5V MAIN < UVLO

Note:

1. Guaranteed by design and characterization; not tested in production.

Min. Typ. Max. Units

1.8

3.0

Ω

1.8

3.0

Ω

1.8

3.0

Ω

1.2

2.0

Ω

86

92

%

108

115

%

0.5

V

1

µA

3.2

3.3

3.4

V

35

70

mA

-20

20

mV

-40

40

±1.5

±3.0

±4.0

A

-20

20

µA

110

KΩ

80

110

% VTT

REF

-0.7

+0.7

V

1.00

1.25

1.55

V

1.3

1.5

1.7

V

-1

1

µA

150

°C

25

°C

170

300

Ω

1

5

µA

150

200

Ω

900

1200

Ω

150

200

Ω

550

750

Ω

500

nA

© 2008 Fairchild Semiconductor Corporation

9

FAN5078D3 • Rev. 1.0.0

www.fairchildsemi.com

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