DPA425R-TL datasheet(21/36 Pages) POWERINT

21 / 36 page

DPA423-426

1/04

ABSOLUTE MAXIMUM RATINGS(1, 4)

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

DRAIN Peak Current: DPA423 ............................... 1.75 A

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

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

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

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

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

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

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

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

J = 25 °C

OSC

MIN

MAX

C(skip)

CONTROL FUNCTIONS

Conditions

(Unless Otherwise Specified)

See Figure 32

SOURCE = 0 V

; T

J = -40 to 125 °C

Min

Typ

Max

Parameter

Symbol

Units

THERMAL IMPEDANCE

kHz

375

400

425

282

300

317

7.2

9.0

8.2

10.0

12.0

11.5

14.0

2.8

3.5

2.5

3.5

4.4

3.6

4.8

6.0

4.4

5.7

7.1

FREQUENCY Pin

Connected to SOURCE

FREQUENCY Pin

Connected to CONTROL

L = 0 V

L = 80 µA

L = 115 µA

Storage Temperature ..................................... -65 to 150

°C

Operating Junction Temperature (2) ............... -40 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.

DPA423

DPA424

DPA425

DPA426

DPA423

DPA424

DPA425

DPA426

J = 25 °C; fOSC = 400 kHz

Switching

Frequency

Duty Cycle (Prior

to Cycle Skipping)

Maximum Duty

Cycle

Control Current at

Start of Cycle

Skipping

External Bias

Current

J = 25 °C; fOSC = 400 kHz

C = ICD1

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. inch (645 mm2), 2 oz. (610 g/m2) copper clad.

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

6. Measured at the back surface of tab.

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)

............................................................................ 30

°C/W

(5)

(

JC)

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

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