TL284 datasheet(3/12 Pages) TI

3 / 12 page

TL284x, TL384x

CURRENT-MODE PWM CONTROLLERS

SLVS038E – JANUARY 1989 – REVISED DECEMBER 1999

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†

Supply voltage (see Note 1) (ICC < 30 mA)

Self limiting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Analog input voltage range, VI (VFB and ISENSE)

–0.3 V to 6.3 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output voltage, VO (OUTPUT)

35 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Input voltage, VI, (VC, D package only)

35 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Supply current, ICC

30 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output current, IO

±1 A

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Error amplifier output sink current

10 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

θJA (see Notes 2 and 3): D package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

D-8 package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . .

P package

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Virtual junction temperature range, TJ

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Output energy (capacitive load)

µJ

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Lead temperature, 1,6 mm (1/16 inch) from case for 10 seconds

260

°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Storage temperature range, Tstg

–65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and

functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not

implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

NOTES:

1. All voltages are with respect to the device GND terminal.

2. Maximum power dissipation is a function of TJ(max), θJA, and TA. The maximum allowable power dissipation at any allowable

ambient temperature is PD = (TJ(max) – TA)/θJA. Operating at the absolute maximum TJ of 150°C can impact reliability.

3. The package thermal impedance is calculated in accordance with JESD 51.

recommended operating conditions

MIN

NOM

MAX

UNIT

Supply voltage, VCC and VC‡

Input voltage, VI, RT/CT

5.5

Input voltage, VI, VFB and ISENSE

5.5

Output voltage, VO, OUTPUT

Output voltage, VO, POWER GROUND‡

–0.1

Supply current, externally limited, ICC

Average output current, IO

200

Reference output current, IO(ref)

–20

Oscillator frequency, fosc

100

500

kHz

Operating virtual junction temperature, TJ

125

°C

Operating free air temperature T

TL284x

–40

°C

Operating free-air temperature, TA

TL384x

°C

‡ These recommended voltages for VC and POWER GROUND apply only to the D package.

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