FAN5068 查看數據表（PDF） - Fairchild Semiconductor

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FAN5068

DDR-1/DDR-2 plus ACPI Regulator Combo

Fairchild Semiconductor 

PRODUCT SPECIFICATION

FAN5068

Absolute Maximum Ratings

Absolute maximum ratings are the values beyond which the device may be damaged or have its useful life

impaired. Functional operation under these conditions is not implied.

Parameter

VCC

BOOT, SW, ISNS, HDRV, S3#O

BOOT to SW

All Other Pins

Junction Temperature (TJ)

Storage Temperature

Lead Soldering Temperature, 10 seconds

I(VTT) Peak (Duration < 2ms)

I(VTT) RMS

Min.

–0.3

–20

–65

Typ.

Max.

6.5

28

6.5

VCC+0.3

150

150

300

1.5

1

Units

V

V

V

V

°C

°C

°C

A

A

Recommended Operating Conditions

Parameter

Supply Voltage VCC

I(3.3 ALW)

Ambient Temperature (TA)

Conditions

Min.

4.5

–10

Typ.

5

Max.

5.5

1.25

85

Units

V

A

°C

Electrical Specifications

Recommended operating conditions, component values per Figure 1 unless otherwise noted.

Parameter

Power Supplies

VCC Current:

S0

S3

S5

VCC UVLO Threshold

5V MAIN UVLO Threshold

Oscillator

Frequency

Ramp Amplitude, pk–pk

Ramp Offset

Reference and Soft Start

Internal Reference Voltage

Soft Start current (ISS)

SS Discharge on-resistance

Conditions

Min.

LDRV, HDRV Open, FB forced above

regulation point, I(VTT) = 0, EN = 1, S3#I = 1

EN = 1, S3#I = LOW, I(3.3) < 10mA

EN = 0, I(3.3) = 0

Rising VCC

4.0

Falling

3.9

Hysteresis

Rising

4.3

Falling

3.9

Hysteresis

255

Initial ramp after power-up

During PWM / LDO soft start

EN = 0

0.891

Typ.

15

15

2

4.2

4.05

0.150

4.4

4.1

0.300

300

1.8

0.5

0.900

4.5

48

150

Max.

24

24

4

4.4

4.2

4.6

4.2

345

0.909

Units

mA

mA

mA

V

V

V

V

V

V

kHz

V

V

V

µA

Ω

6

REV. 1.0.1 9/9/04

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