TYPICAL

CHARACTERISTICS

For technical support and more information, see inside back cover or visit www.ti.com/powertrends

Ordering Information

PT7779t

t

t

t

t = 1.3 to 3.5 Volts

Programming Information

VID4=1 VID4=0

VID3 VID2 VID1 VID0

Vout

Vout

1

1

1

1

2.0V

1.30V

1

1

1

0

2.1V

1.35V

1

1

0

1

2.2V

1.40V

1

1

0

0

2.3V

1.45V

1

0

1

1

2.4V

1.50V

1

0

1

0

2.5V

1.55V

1

0

0

1

2.6V

1.60V

1

0

0

0

2.7V

1.65V

0

1

1

1

2.8V

1.70V

0

1

1

0

2.9V

1.75V

0

1

0

1

3.0V

1.80V

0

1

0

0

3.1V

1.85V

0

0

1

1

3.2V

1.90V

0

0

1

0

3.3V

1.95V

0

0

0

1

3.4V

2.00V

0

0

0

0

3.5V

2.05V

Logic 0 = Pin 12 potential (remote sense gnd)

Logic 1 = Open circuit (no pull-up resistors)

VID3 and VID4 may not be changed while the unit is operating.

For dimensions and PC board layout, see

Package Style 1020 and 1030

(64A with PT7741 Booster)

1.3V to 3.5V

Features

Case/Pin

Configuration

Vertical Through-Hole

N

Horizontal Through-Hole

A

Horizontal Surface Mount

C

PT7779—5V

32 Amp Programmable Integrated

Switching Regulator

Power Dissipation Vs Output Current

(See Note A)

Efficiency Vs Output Current

Output Ripple Vs Output Current

60.0

65.0

70.0

75.0

80.0

85.0

90.0

95.0

100.0

0

4

8

12

162024

2832

Iout (A)

1.8V

2.5V

3.3V

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

0

4

8

12

162024

2832

Iout (A)

1.8V

2.5V

3.3V

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

0.0

4.0

8.0

12.0

16.0

20.0

24.0

28.0

32.0

Iout (A)

400LFM

200LFM

120LFM

Nat conv

Airflow

Note A:

Characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the regulator.

Note B:

Safe Operating Area curves represent conditions at which internal components are at or beow manufacturer’s rated operating temperatures.

0

10

20

30

40

50

60

70

80

0

4

8

12

16

20

24

28

32

Iout (A)

1.8V

2.5V

3.3V