DPA422 datasheet(21/36 Pages) POWERINT

21 / 36 page

Rev. S 12/07

DPA422-426

www.powerint.com

Parameter

Symbol

Conditions

SOURCE = 0 V; T

J = -40 to 125 °C

See Figure 33

(Unless Otherwise Speciﬁed)

Min

Typ

Max

Units

Control Functions

Switching

Frequency

OSC

J = 25 °C

FREQUENCY Pin

Connected to SOURCE

375

400

425

kHz

FREQUENCY Pin

Connected to CONTROL

282

300

317

Duty Cycle (Prior to

Cycle Skipping)

MIN

Maximum Duty Cycle

MAX

C = ICD1

L = 0 V

L = 80 μA

L = 115 μA

Control Current at Start

of Cycle Skipping

C(skip)

J = 25 °C; fOSC = 400 kHz

DPA422

6.3

8.0

DPA423

7.2

9.0

DPA424

8.2

10.0

DPA425

10.0

12.0

DPA426

11.5

14.0

External Bias

Current

J = 25 °C; fOSC = 400 kHz

DPA422

1.8

2.5

3.1

DPA423

2.8

3.5

DPA424

2.5

3.5

4.4

DPA425

3.6

4.8

6.0

DPA426

4.4

5.7

7.1

Absolute Maximum Ratings(1,5)

DRAIN Voltage .....................................................-0.3 V to 220 V

DRAIN Peak Current:

DPA422......................................1.31 A

DPA423......................................1.75 A

DPA424....................................... 3.5 A

DPA425...........................................7 A

DPA426....................................... 9.6 A

CONTROL Voltage ................................................ -0.3 V to 9 V

CONTROL Current .........................................................100 mA

LINE SENSE Pin Voltage ...................................... -0.3 V to 9 V

EXTERNAL CURRENT LIMIT Pin Voltage ........ -0.3 V to 9 V

FREQUENCY Pin Voltage ....................................... -0.3 V to 9 V

Storage Temperature-65 °C to 150 °C

Operating Junction Temperature(2).................... -40 °C to 150 °C

Lead Temperature(3) ....................................................... 260 °C

Notes:

1. All voltages referenced to SOURCE, T

A = 25 °C.

2. Normally limited by internal circuitry.

3. 1/16” 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.

Theraml Impedance

Thermal Impedance: P or G Package:

(

JA) ........................... 70 °C/W

(1); 60 °C/W(2)

(

JC)

(3) ............................................11 °C/W

R Package:

(

JA) ................................................. 40 °C/W

(4)

(

JA) ................................................. 30 °C/W

(5)

(

JC)

(6) .............................................. ..2 °C/W

Notes:

1. Soldered to 0.36 sq. in. (232 mm2), 2 oz. (610 g/m2) copper clad.

2. Soldered to 1 sq. in. (645 mm2), 2 oz. (610 g/m2) copper clad.

3. Measured on pin 7 (SOURCE) close to plastic interface.

4. Soldered to 1 sq. in. (645 mm2), 2 oz. (610 g/m2) copper clad.

5. Soldered to 3 sq. in. (1935 mm2), 2 oz. (610 g/m2) copper clad.

6. Measured at the back surface of tab.

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