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參數(shù)資料
| 型號： | TL499 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | WIDE-RANGE POWER-SUPPLY CONTROLLERS |
| 中文描述： | 寬范圍電源控制器 |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 114K |
| 代理商： | TL499 |
TL499A
WIDE-RANGE POWER-SUPPLY CONTROLLERS
SLVS029F – JANUARY 1984 – REVISED MAY 2000
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Output voltage, V
O
(see Note 1)
Input voltage, series regulator, V
I
1
Input voltage, switching regulator, V
I
2
Blocking-diode reverse voltage
Blocking-diode forward current
Power switch current (SW IN)
Package thermal impedance,
θ
JA
(see Notes 2 and 3): P package
35 V
35 V
10 V
35 V
1 A
1 A
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. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PS package
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds
Storage temperature range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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.
85
°
C/W
95
°
C/W
260
°
C
. . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
–65
°
C to 150
°
C
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
μ
F
μ
F
μ
H
°
C
Current-limiting resistor, RCL
Filter capacitor
150
1000
100
470
Pass capacitor
Inductor, L (dcr
≤
0.1
)
Operating free-air temperature, TA
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.
0.1
50
150
–20
85
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