LNK574DG datasheet(8/16 Pages) POWERINT

Part #	LNK574DG

Description	Zero No-Load Consumption Integrated Off-Line Switcher

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Manufacturer	POWERINT [Power Integrations, Inc.]

Direct Link	http://www.powerint.com

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8 / 16 page

Rev. B 12/07/10

8

LNK574

www.powerint.com

Parameter

Symbol

Conditions

SOURCE = 0 V; T

J = -40 to 125 °C

(Unless Otherwise Specified)

Min

Typ

Max

Units

Control Functions (cont.)

Minimum Switch

ON-Time

t

ON(MIN)

700

ns

DRAIN Supply Current

I

S1

FeedBack Voltage > V

FB

(MOSFET not Switching)

150

200

260

mA

I

S2

0.9 V ≤ V

FB ≤ 1.70 V

(MOSFET Switching)

200

250

310

BYPASS Pin

Charge Current

I

CH1

V

BP = 0 V, TJ = 25 °C

-5.5

-3.8

-1.8

mA

I

CH2

V

BP = 4 V, TJ = 25 °C

-3.8

-2.5

-1.0

BYPASS Pin Voltage

V

BP

5.60

5.85

6.10

V

BYPASS Pin

Voltage Hysteresis

V

BP(H)

0.8

1.0

1.2

V

BYPASS Pin

Shunt Voltage

BP

SHUNT

6.1

6.5

6.9

V

Circuit Protection

Current Limit

I

LIMIT

di/dt = 40 mA/

ms

T

J = 25 °C

126

136

146

mA

Power Coefficient

I2f

di/dt = 40 mA/

ms

T

J = 25 °C

1665

1850

2091

A2Hz

Leading Edge

Blanking Time

t

LEB

T

J = 25 °C

220

265

ns

BYPASS Pin Shutdown

Threshold Current

I

SD

V

BP = BPSHUNT

See Note E

5.0

6.5

8.0

mA

Thermal Shutdown

Temperature

T

SD

See Note B

135

142

150

°C

Thermal Shutdown

Hysteresis

T

SD(H)

See Note B

70

°C

Power Down (PD) Mode

Off-State Drain Leakage

in Power Down Mode

I

DSS(PD)

T

J = 25 °C,

V

DRAIN = 325 V

See Figure 23

6.5

9

mA

BYPASS Pin Overvoltage

Protection in Power

Down Mode

V

BP(PDP)

I

BP = 300 mA

T

J ≤ 100 °C

7.25

8.5

10.9

V

BYPASS Pin Power Up

Reset Threshold (in

Power Down Mode or at

Power Supply Start-up)

V

BP(PU)

1.5

3

4

V

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