13

LNK520

E

2/05

DRAIN Voltage ..................................................-0.3Vto700V

DRAIN Peak Current......................................400 mA

CONTROLVoltage ................................................ -0.3Vto 9V

CONTROL Current (not to exceed 9 V)............100 mA

StorageTemperature..........................................-65°C to150°C

Notes:

1. All voltages referenced to SOURCE, T

2. Normally limited by internal circuitry.

3. 1/16 in. from case for 5 seconds.

4. Maximum ratings specified may be applied, one at a time,

without causing permanent damage to the product.

Exposure to Absolute Maximum Rating conditions for

extended periods of time may affect product reliability.

THERMAL IMPEDANCE

Thermal Impedance: P or G Package:

(θ

(2)

(θ

(1)

............................................... 11 °C/W

Notes:

1. Measured on pin 2 (SOURCE) close to plastic interface.

Parameter

Symbol

Conditions

SOURCE = 0 V; T

See Figure 14

(Unless Otherwise Specified)

Min

Typ

Max

Units

CONTROL FUNCTIONS

Switching

Frequency

f

OSC

I

34.5

42

49.5

kHz

Low Switching

Frequency

f

OSC(LOW)

Duty Cycle = DC

LF

T

24

30

36

kHz

Duty Cycle at Low

Switching

Frequency

DC

LF

Frequency Switching from f

f

2.7

4.1

5.5

%

Low Frequency

Duty Cycle Range

DC

(RANGE)

Frequency = f

2.0

3.5

5.0

%

Maximum Duty

Cycle

DC

MAX

I

74

77

80

%

PWM Gain

DC

REG

I

-0.37

-0.27

-0.17

%/µA

CONTROL Pin

Current at 30%

Duty Cycle

I

DCT

T

See Figure 4

2.06

2.15

2.25

mA

CONTROL Pin

Voltage

V

C(IDCT)

I

5.5

5.75

6

V

Dynamic

Impedance

Z

C

I

60

90

120

Ω