TL499A Datasheet, PDF (3/8 Pages) Texas Instruments – WIDE-RANGE POWER-SUPPLY CONTROLLERS

TL499A
WIDE-RANGE POWER-SUPPLY CONTROLLERS
SLVS029F – JANUARY 1984 – REVISED MAY 2000
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)^†
Output voltage, V_O (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Input voltage, series regulator, V_I1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Input voltage, switching regulator, V_I2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 V
Blocking-diode reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 V
Blocking-diode forward current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A
Power switch current (SW IN) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A
Package thermal impedance, θ_JA (see Notes 2 and 3): P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
PS package . . . . . . . . . . . . . . . . . . . . . . . . . . . 95°C/W
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –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), θ_JA, and TA. The maximum allowable power dissipation at any allowable
ambient temperature is PD = (TJ(max) – TA)/θ_JA. 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
Input voltage, VI1 (SERIES IN1)
Input voltage, VI2 (SW REG IN2)
Output-to-input differential voltage, switching regulator, VO – VI2 (see Note 4)
Continuous output current, IO
Power switch current (at SW IN)
2.9
30 V
4.5
32 V
1.1
10 V
1.2
28.9 V
100 mA
500 mA
Current-limiting resistor, RCL
Filter capacitor
150
1000 Ω
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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
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