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FAN5240 Rev. 1.2.0

Absolute Maximum Ratings

The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The

device should not be operated at these limits. The parametric values defined in the Electrical Characteristics tables

are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table will define the

conditions for actual device operation.

Recommended Operating Conditions

19

PGOOD

Power Good Flag. An open-drain output that will pull LOW when the core output below

825mV. PGOOD delays its low to high transition for a time determined by CDELAY when

VCORE rises above 875mV.

20

SS

Soft Start. A capacitor from this pin to GND programs the slew rate of the converter during

initialization as well as in operation. This pin is used as the reference against which the

output is compared. During initialization, this pin is charged with a 25

µA current source.

Once this pin reaches 0.5V, its function changes, and it assumes the value of the voltage as

set by the VID programming. The current driving this pin is then limited to ±500

µA, that

21

Input voltage from battery. This voltage is used by the oscillator for feed-forward

compensation of input voltage variation.

28

4.6V (UVLO rising) and shuts down when it drops below 4.3V (UVLO falling).

Parameter

Min.

Typ.

Max.

Units

6.5

V

27

V

BOOT, SW, HDRV Pins

33

V

BOOT to SW

6.5

V

All Other Pins

–0.3

V

–10

150

°C

Storage Temperature

–65

150

°C

Lead Soldering Temperature, 10 seconds

300

°C

Parameter

Conditions

Min.

Typ.

Max.

Units

4.75

5

5.25

V

624

V

–20

85

°C

Pin

Number

Pin

Name

Pin Function Description