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TPS73HD301PWP Datasheet(PDF) 3 Page - Texas Instruments

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No. de pieza TPS73HD301PWP
Descripción Electrónicos  DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
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Fabricante Electrónico  TI [Texas Instruments]
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TPS73HD301PWP Datasheet(HTML) 3 Page - Texas Instruments

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TPS73HD301, TPS73HD318, TPS73HD325
DUAL-OUTPUT LOW-DROPOUT VOLTAGE REGULATORS
SLVS167C – SEPTEMBER 1998 – REVISED – MAY 1999
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
absolute maximum ratings over operating free-air temperature (unless otherwise noted)
Input voltage range, VI (xIN, xRESET, xSENSE, xEN)
–0.3 V to 11 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential input voltage,VID (1GND to 2GND)
2 V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output current, IO (1OUT, 2OUT)
2 A
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Continuous total power dissipation
See Dissipation Rating Tables
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating free-air temperature range, TA
–40
°C to 125°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Storage temperature range, Tstg
–65
°C to 150°C
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lead temperature soldering 1,6 mm (1/16 inch) from case for 10 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 voltages are with respect to GND.
DISSIPATION RATING TABLE 1 – FREE-AIR TEMPERATURES‡
PACKAGE
AIR FLOW
(CFM)
TA < 25°C
POWER RATING
DERATING FACTOR
ABOVE TA = 25°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
PWP‡
0
2.9 W
23.5 mW/
°C
1.9 W
1.5 W
PWP‡
300
4.3 W
34.6 mW/
°C
2.8 W
2.2 W
PWP§
0
3 W
23.8 mW/
°C
1.9 W
1.5 W
PWP§
300
7.2 W
57.9 mW/
°C
4.6 W
3.8 W
‡ This parameter is measured with the recommended copper heat sink pattern on a 1-layer PCB, 5-in
× 5-in PCB, 1 oz. copper,
2-in
× 2-in coverage (4 in2).
§ This parameter is measured with the recommended copper heat sink pattern on a 8-layer PCB, 1.5-in
× 2-in PCB, 1 oz. copper
with layers 1, 2, 4, 5, 7, and 8 at 5% coverage (0.9 in2) and layers 3 and 6 at 100% coverage (6 in2).
recommended operating conditions
MIN
MAX
UNIT
Input voltage, VI†
Adjustable output (regulator #1)
2.97
10
V
Input voltage, VI†
3.3–V output (regulator #2)
3.97
10
V
High-level input voltage at EN, VIH
2
V
Low-level input voltage at EN, VIL
0.5
V
Total output current range (per regulator), IO
0
750
mA
Operating virtual junction temperature range, TJ
–40
125
°C
† Minimum input voltage defined in the recommended operating conditions is the maximum specified output voltage plus dropout voltage, VDO,
at the maximum specified load range (750 mA). Since dropout voltage is a function of output current, the usable range can be extended for lighter
loads. To calculate the minimum input voltage for the maximum load current used in a given application, use the following equation:
V
I(min) +
V
O(max) )
V
DO(max load)
Because regulator 1 of the TPS373HD301 is programmable, rDS(on) should be used to calculate VDO before applying the above equation. The
equation for calculating VDO from rDS(on) is given in Note 3 in the TPS73HD301 electrical characteristics table. The minimum value of 3.5 V is
the absolute lower limit for the recommended input voltage range for the TPS73HD301. With 2.97-V input voltage, the LDO may be in dropout
and will not meet the 3% regulaotr output or 750-mA load current specification.


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