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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

* For STBY* pin:

Open =Output Enabled

Ground =Output Disabled

Pin Function

1

VID0

2

VID1

3VID2

4

VID3

5

VID4

6

STBY *

7

Sync

8

No Connect

10

Logic 0 = Pin 15 potential (Remote Sense GND)

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

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

PT7761—5V

40-A Programmable Integrated

Switching Regulator Module

Pin Function

11

12

14

15

16

GND

17

GND

18

GND

19

GND

20

GND

Pin Function

21

GND

22

GND

24

25

26

27

28

29

31

Pin-Out Information

Programming Information

PT7761

Characteristics

Symbols

Conditions

Min

Typ

Max

Units

Output Current

—40

A

—38

Input Voltage Range

4.5

—

5.5

V

Set-Point Voltage Tolerance

All output voltages

—

—

mV

Temperature Variation

–40°C

—

±0.75

—

Line Regulation

—

±5

—

mV

Load Regulation

Over load range

—

±5

—

mV

Total Output Variation

Includes set-point, line, load,

—

–40°C

Efficiency

η

—

90

—

—

89

—

%

—

83—

—

86

—

—

85

—

%

—

80

—

20MHz bandwidth

—

50

—

mV

Transient Response

—

50

—

µSec

—

100

—

mV

Short Circuit Threshold

Reset and auto-recovery

—

75

—

A

Switching Frequency

300

350

400

kHz

Standby Control (pin 6)

Input High Voltage

Referenced to GND (pins 16–22)

2

—

V

Input Low Voltage

-0.2

—

0.8

Input Low Current

Pin 6 to GND

—

0.4

—

mA

Quiescent Current

Pin 6 to GND

—

30

—

mA

External Output Capacitance

330

—

30,000

µF

Operating Temperature Range

°C

Storage Temperature

—

-40

—

+125

°C

Mechanical Shock

Mil-STD-883D, Method 2002.3

1 msec, Half Sine, mounted to a fixture

—

TBD

—

G’s

Mechanical Vibration

Vertical

—

—

G’s

Mil-STD-883D, 20-2000 Hz

Horizontal

—

—

Weight

—

Vertical/Horizontal

—

55

—

grams

Flammability

—

Materials meet UL 94V-0

Notes: (1) ISR-will operate down to no load with reduced specifications.

(2) If the Remote Sense Ground (Pin 15) is not used, it must be connected to pin 16 for optimum output voltage accuracy.

(3) The Standby control (pin 6) has an internal pull-up, and if left open-circuit the module will operate when input power is applied.

(5) See safe Operating Area curves or consult factory for the appropriate derating.

(6) The case pins on the through-hole package types (suffixes N & A) must be soldered. For more information see the applicable package outline drawing.

External Capacitors: The PT7761 series requires a minimum ouput capacitance of 330µF for proper operation. The PT7761 also requires a minimum input capacitance

of 1,500µF, which must be rated for a minimum of 1.4Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.

For further information refer to the application note regarding capacitor selection for this product.

Input Inductor: An input inductor is optional for most applications. The input inductor must be sized to handle 30ADC with a typical value of 1µH.