STR-W6756 datasheet(3/8 Pages) ALLEGRO

部品番号	STR-W6756

部品情報	Universal-Input/140 W Off-Line Quasi-Resonant Flyback Switching Regulator

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メーカー	ALLEGRO [Allegro MicroSystems]

ホームページ	http://www.allegromicro.com

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STR-W6756

Universal-Input/140 W Off-Line Quasi-

Resonant Flyback Switching Regulator

www.allegromicro.com

3

Switching

Regulators

ELECTRICAL CHARACTERISTICS at TA = +25°C, VCC = 20 V, voltage measurements are referenced to S/GND terminal

(unless otherwise specified).

Limits

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Start-Up Operation

Operation Start Voltage

VCC(ON)

Turn-on, VCC = 0

19.9 V

16.3

18.2

19.9

V

Soft-Start Operation Stop Voltage

VSS/OLP

1.1

1.2

1.4

V

Soft-Start Oper. Charging Current

ISS/OLP

-390

-550

-710

µA

Operation Stop Voltage

VCC(OFF)

Turn-off, VCC = 19.9

8.8 V

8.8

9.7

10.6

V

Circuit Current in Non-Operation

ICC(OFF)

VCC = 15 V

–

100

µA

Normal Operation

Drain-Source Breakdown Voltage

V(BR)DSS

ID = 300 µA

650

–

V

Drain Leakage Current

IDSS

VDS = 650 V

–

300

µA

On-State Resistance

rDS(on)

ID = 2.2 A, TJ = +25°C

–

0.73

Ω

Switching Time

t f

–

400

ns

Circuit Current

ICC(ON)

–

6.0

mA

Oscillation Frequency

fosc

19

22

25

kHz

Bottom-Skip Oper. Threshold Volt.

VOCPBD(BS1)

-605

-665

-720

mV

VOCPBD(BS2)

-385

-435

-485

mV

Quasi-Resonant Oper. Threshold

VOCPBD(TH1)

280

400

520

mV

VOCPBD(TH2)

670

800

930

mV

Feedback-Pin Threshold Voltage

VFB(OFF)

1.32

1.45

1.58

V

Feedback-Pin Current

IFB(ON)

600

1000

1400

µA

Standby Operation

Standby Operation Start Voltage

VCC(S)

VCC = 0

12.2 V

10.3

11.1

12.1

V

Standby Oper. Start Volt. Interval

VCC

1.10

1.35

1.65

V

Standby Non-Operation Current

ICC(S)

VCC = 10.2 V

–

20

56

µA

Feedback-Pin Current

IFB(ON)

VCC = 10.2 V

–

4.0

14

µA

Feedback-Pin Threshold Voltage

VFB(S)

VCC = 12.2 V

0.55

1.10

1.50

V

Minimum ON Time

ton(min)

0.5

0.8

1.2

µs

continued next page ...

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