3

LTC1504A

ELECTRICAL CHARACTERISTICS

temperature range.

Note 1: Absolute Maximum Ratings are those values beyond which the life

of the device may be impaired.

Note 2: All currents into device pins are positive; all currents out of device

pins are negative. All voltages are referenced to ground unless otherwise

specified.

Note 3: This parameter is guaranteed by correlation and is not tested

directly.

Note 4: LTC1504A quiescent current is dominated by the gate drive

current drawn by the onboard power switches. With FB or SENSE pulled to

can be observed. With FB or SENSE hooked up normally, the output stage

will be switching and total dynamic supply current can be measured.

lower than the specified values, due to the internal divider resistors.

Note 7: Contact factory for guaranteed specifications at 2.7V supply.

TEMPERATURE (

°C)

–50

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

25

75

1504A • TPC03

–25

0

50

100

125

Switch On-Resistance vs

Temperature

Supply Current vs Supply Voltage

SUPPLY VOLTAGE (V)

2.5

1504A • TPC01

5

7.5

10

14

12

10

8

6

4

2

0

10k

700

600

500

400

300

200

100

0

100k

1504A • TPC04

TEMPERATURE (

°C)

–50

–25

0

25

50

75

100

125

10

1

0.1

1504A • TPC02

Supply Current vs Temperature

Shutdown Threshold vs

Supply Voltage

SUPPLY VOLTAGE (V)

35

7

4.0

3.5

3.0

2.5

2.0

1.5

1.0

0.5

0

10

1504A • TPC07

Current Limit Threshold vs

Temperature

TEMPERATURE (

°C)

–50 –25

0

25

50

75

1504A • TPC05

125

500

450

400

350

300

250

200

150

100

50

0

100

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Soft Start Source Current

q

–8

–12

–16

µA

q

–8

–12

–17

µA

Output Switch Rise/Fall Time

10% to 90% Ouput Swing

q

550

ns

Maximum Duty Cycle

q

100

%