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TL497AC Datasheet(PDF) 4 Page - Texas Instruments

Part # TL497AC
Description  SWITCHING VOLTAGE REGULATORS
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TL497AC Datasheet(HTML) 4 Page - Texas Instruments

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TL497AC, TL497AI, TL497AY
SWITCHING VOLTAGE REGULATORS
SLVS009C – JUNE 1976 – REVISED AUGUST 1995
4–4
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC (see Note 1)
15 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output voltage, VO
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI(COMP INPUT)
5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input voltage, VI (INHIBIT)
5 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diode reverse voltage
35 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power switch current
750 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diode forward current
750 mA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation
See Dissipation Rating Table
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA: TL497AC
0
°C to 70°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TL497AI
– 40
°C to 85°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds
260
°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.
NOTE 1: All voltage values except diode voltages are with respect to network ground terminal.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING
FACTOR
DERATE
ABOVE TA
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
D
950 mW
7.6 mW/
°C
25
°C
608 mW
494 mW
N
1000 mW
9.2 mW/
°C41°C
733 mW
595 mW
PW
700 mW
5.6 mW/
°C
25
°C
448 mW
recommended operating conditions
MIN
MAX
UNIT
Supply voltage, VCC
4.5
12
V
High-level input voltage, VIH, INHIBIT
2.5
V
Low-level input voltage, VIL, INHIBIT
0.8
V
Ol
Step-up configuration (see Figure 1)
VI + 2
30
V
Output voltage
Step-down configuration (see Figure 2)
Vref
VI – 1
V
pg
Inverting regulator (see Figure 3)
–Vref
–25
Power switch current
500
mA
Diode forward current
500
mA
Operating free-air temperature TA
TL497AC
0
70
°C
Operating free-air temperature, TA
TL497AI
–40
85
°C


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