TL499A

WIDE-RANGE POWER-SUPPLY CONTROLLERS

SLVS029F – JANUARY 1984 – REVISED MAY 2000

3

POST OFFICE BOX 655303

35 V

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

35 V

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

10 V

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

Blocking-diode reverse voltage

35 V

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

Blocking-diode forward current

1 A

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

Power switch current (SW IN)

1 A

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

Package thermal impedance,

85

°C/W

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

PS package

95

°C/W

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

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

260

°C

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

–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 voltage values are with respect to network ground 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 affect reliability.

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

recommended operating conditions

MIN

NOM

MAX

UNIT

Output voltage, VO

2.9

30

V

Input voltage, VI1 (SERIES IN1)

4.5

32

V

Input voltage, VI2 (SW REG IN2)

1.1

10

V

Output-to-input differential voltage, switching regulator, VO – VI2 (see Note 4)

1.2

28.9

V

Continuous output current, IO

100

mA

Power switch current (at SW IN)

500

mA

Current-limiting resistor, RCL

150

1000

Ω

Filter capacitor

100

470

µF

Pass capacitor

0.1

µF

Inductor, L (dcr

≤ 0.1 Ω)

50

150

µH

Operating free-air temperature, TA

–20

85

°C

NOTE 4: When operating temperature range is TA ≤ 70°C, minimum VO – VI2 is ≥ 1.2 V. When operating temperature range is TA ≤ 85°C, minimum

VO – VI2 is ≥ 1.9 V.