FC9921 datasheet(2/8 Pages) FS

2 / 8 page

FC9921

2012. 10. 31

2/8

Revision No : 0

Absolute Maximum Ratings

Pin Configurations

Stresses beyond those listed under ‘‘Absolute Maximum Ratings’’ may cause

permanent damage to the device. These are stress ratings only, and functional

operation of the device at these or any other conditions beyond those indicated

in the operational sections of the specifications is not implied. Exposure to

absolute maximum rating conditions for extended periods may affect device reliability.

Note 1: Also limited by package power dissipation limit, whichever is lower.

Electrical Characteristics

(Specifications are at T

A = 25°C and VDRAIN =50V, unless otherwise noted)

Symbol Description

Min. Typ. Max. Units Conditions

Regulator (VDD)

VDD

VDD regulator output

7.8

V ---

VDRAIN VDRAIN supply voltage

V ---

VUVLO VDD undervoltage threshold

5.0

V ---

ΔVUVLO VDD undervoltage lockout hysteresis

200

mV ---

IDD

Operating supply current

200 350

µA

VDD(EXT) = 8.5V, VDRAIN = 40V

Output (DRAIN)

VBR

Breakdown voltage *

475

V ---

RON

On-resistance

100

IDRAIN = 20mA

CDRAIN Output capacitance #

1.0

5.0

pF VDRAIN = 400V

ISAT

MOSFET saturation current #

100 150

mA ---

Current Sense Comparator

ITH

Threshold average current *

18.5

23 25.5 mA ---

TBLANK Leading edge blanking delay * #

200 300 400

ns ---

TON(MIN) Minimum on-time

650

ns ---

OFF-Time Generator

TOFF

10.5 13

s ---

Note:

*- Denotes the specifications which apply over the full operating ambient temperature range

of - 40℃ < TA < + 85℃.

# - Denotes guaranteed by design.

Parameter

Value

Supply voltage, VDD

-0.3 to +10V

Supply current, IDD

+5mA

Operating ambient temperature range

-40 ºC to +85℃

Operating junction temperature range

-40 ºC to +125℃

Storage temperature range

-65 ºC to +150℃

Power dissipation @ 25℃, TO-92

740mW

Power dissipation @ 25℃, SOT-89

1600mW (Mounted on

FR4 board, 25mm x

25mm x 1.57mm)

DRAIN

SOT-89

VDD

GND

Top

View

GND

TO-92

DRAIN

VDD

Bottom

View

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