Rev. B 09/15

11

LYT2002-2005

www.power.com

NOTES:

A. Auto-restart on-time is a function of switching frequency programmed by t

onx IFB and minimum frequency in CC mode.

B. The current limit threshold is compensated to cancel the effect of current limit delay. As a result the output current stays constant across

the input line range.

C. I

DSS1 is the worst-case off-state leakage specification at 80% of BVDSS and maximum operating junction temperature. IDSS2 is a typical

specification under worst-case application conditions (rectified 265 VAC) for no-load consumption calculations.

D. When the duty cycle exceeds DC

MAX the LYTSwitch-2 operates in on-time extension mode.

E. This parameter is derived from characterization.

Parameter

Symbol

Conditions

SOURCE = 0 V; T

J = 0 to 100 °C

(Unless Otherwise Specified)

Min

Typ

Max

Units

Output (cont.)

OFF-State

Leakage

I

DSS1

V

DS = 560 V

T

J = 125 °C, See Note C

50

mA

I

DSS2

V

DS = 375 V

T

J = 50 °C

15

Breakdown

Voltage

BV

DSS

T

J = 25 °C

725

V

DRAIN Pin

Supply Voltage

50

V

Auto-Restart

ON-Time

t

AR-ON

t

ON × IFB = 1.4 mAms

f

OSC = 12 kHz

V

FB = 0

See Notes A, E

100

ms

Auto-Restart

OFF-Time

t

AR-OFF

See Note E

0.32

s

Open-Loop

FEEDBACK Pin

Current Threshold

I

OL

See Note E

-45

mA

Open-Loop

ON-Time

See Note E

1.4

ms