STR-G665

3

OFF-LINE

QUASI-RESONANT FLYBACK

SWITCHING REGULATOR

ELECTRICAL CHARACTERISTICS at T

A = +25°C, VIN = 18 V,

V

DD = 10 V, VS = 0, voltage mea-

surements are referenced to ground terminal (unless otherwise specified).

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

D = 300 µA

650

–

–

V

Drain Leakage Current

I

DSS

V

DS = 650 V

–

–

300

µA

On-State Resistance

r

DS(on)

V

S = 10 V, ID = 0.9 A, TJ = +25°C

–

–

1.9

Ω

Maximum OFF Time

t

off

Drain waveform high

45

–

55

µs

Minimum Pulse Duration for Input of

Quasi-Resonant Signals

t

w(th)

Drain waveform high1

–

–

1.0

µs

Minimum OFF Time

t

off

Drain waveform high1

–

–

1.5

µs

Feedback Threshold Voltage

V

FDBK

Drain waveform low to high1

0.68

0.73

0.78

V

Oscillation synchronized2

1.3

1.45

1.6

V

Over-Current Protection/Feedback

Sink Current

I

OCP/FB

V

OCP/FB = 1.0 V

1.2

1.35

1.5

mA

Latch Holding Current

I

IN(OVP)

V

IN reduced from 24.5 V to 8.5 V

–

–

400

mA

Latch Release Voltage

V

IN

I

IN ≤ 20 µA, VIN reduced from 24.5 V

6.6

–

8.4

V

Switching Time

t

f

V

DD = 200 V, ID = 0.9 A

–

–

250

ns

Supply Current

I

IN(ON)

Operating3

––

30

mA

I

IN(OFF)

Increasing V

IN prior to oscillation

–

–

100

µA

Insulation RMS Voltage

V

WM(RMS)

All terminals simultaneous refer-

2000

–

–

V

ence metal plate against backside

Thermal Shutdown

T

J

140

–

–

°C

Thermal Resistance

RθJM

Output junction-to-mounting frame

–

–

1.63

°C/W

Notes: Typical Data is for design information only.

1. Feedback is square wave, V

IM = 2.2 V, th = 1 µs, tl = 35 µs

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

w(th) and greater than VFDBK

3. Feedback is square wave, V

IM = 2.2 V, th = 4 µs, tl = 1 µs