FAN5090 View Datasheet(PDF) - Fairchild Semiconductor

Part Name

Description

View to exact match

FAN5090

Two Phase Interleaved Synchronous Buck Converter for VRM 9.x Applications

Fairchild Semiconductor 

PRODUCT SPECIFICATION

FAN5090

Pin Number

20

21

Pin Name

ILIM

DROOP

22

ENABLE/SS

23

RT

24

VFB

Pin Function Description

Current Limit. A resistor from this pin to ground sets the over current trip level.

Droop Control. A resistor from this pin to ground sets the amount of droop by

controlling the gain of the current sense amplifier.

Output Enable/Softstart. A logic LOW on this pin will disable the output. An

10µA internal current source allows for open collector control. This pin also

doubles as soft start.

Frequency Set. A resistor from this pin to ground sets the switching frequency.

Voltage Feedback. Connect to the desired regulation point at the output of the

converter.

Absolute Maximum Ratings (Absolute Maximum Ratings are the values beyond which the device

may be damaged or have it’s useful life impaired. Functional operation under these conditions is not implied.)

Parameter

Supply Voltage VCC

Supply Voltages BOOT to PGND

BOOT to SW

Voltage Identification Code Inputs, VID0-VID4

VFB, ENABLE/SS, PWRGD, DROOP

SWA, SWB to AGND (<1µs)

PGNDA, PGNDB to AGND

Gate Drive Current, peak pulse

Junction Temperature, TJ

Storage Temperature

Min.

Max.

Unit

15

V

24

V

24

V

6

V

6

V

-3

15

V

-0.5

0.5

V

3

A

-55

150

°C

-65

150

°C

Thermal Ratings

Parameter

Lead Soldering Temperature, 10 seconds

Power Dissipation, PD

Thermal Resistance Junction-to-Case, ΘJC

Thremal Resistance Junction-to-Ambient, ΘJA

Min.

Typ.

16

84

Max.

300

650

Unit

°C

mW

°C/W

°C/W

Recommended Operating Conditions (See Figure 2)

Parameter

Output Driver Supply, BOOTA, B

Ambient Operating Temperature

Supply Voltage VCC

Conditions

Min.

16

0

10.8

Max.

22

70

13.2

Units

V

°C

V

REV. 1.0.1 9/16/03

3

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