Series STR-F6600

OFF-LINE

QUASI-RESONANT FLYBACK

SWITCHING REGULATORS

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

™

4

TM

ELECTRICAL CHARACTERISTICS at T

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

On-State Voltage

V

INT

Turn-on, increasing V

IN

14.4

16

17.6

V

Under-Voltage Lockout

V

INQ

Turn-off, decreasing V

IN

9.0

10

11

V

Over-Voltage Threshold

V

OVP(th)

Turn-off, increasing V

IN

20.5

22.5

24.5

V

Drain-Source Breakdown Voltage

V

BR(DSS)

I

V

––

V

Drain Leakage Current

I

DSS

At V

–

–

300

µA

On-State Resistance

r

DS(ON)

V

–

see table

Ω

Maximum Off Time

t

off

Drain waveform high

45

–

55

µs

Minimum Pulse Duration for Input of

Quasi-Resonant Signals

t

w(th)

––

1.0

µs

Minimum Off Time

t

off

––

1.5

µs

Feedback Threshold Voltage

V

FDBK

0.68

0.73

0.78

V

1.3

1.45

1.6

V

Over-Current Protection/Feedback

Sink Current

I

OCP/FB

V

1.2

1.35

1.5

mA

Latch Holding Current

I

IN(OVP)

V

–

–

400

µA

Latch Release Voltage

V

IN

I

6.6

–

8.4

V

Switching Time

t

f

V

–

–

250

ns

Supply Current

I

IN(ON)

––

30

mA

I

IN(OFF)

Increasing V

–

–

100

µA

Insulation RMS Voltage

V

WM(RMS)

All terminals simultaneous refer-

2000

–

–

V

ence to a metal plate against

the backside

Thermal Resistance

Output channel to mounting frame

–

–

1.75

°C/W

Thermal Shutdown

T

J

140

–

–

°C

Notes: Typical Data is for design information only.

1. Feedback is square wave, V

2. For quasi-resonant operation, the input signal must be longer than t

3. Feedback is square wave, V