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20-A Programmable SIP Family

Input

Adjust

Output

Product

Voltage

Description

Method

Range

PT7709

5V

VID

5-Bit

1.3V– 3.5V

PT7708

3.3V

VID

4-Bit

1.3V– 2.05V

PT7615

5V

VID

5-Bit

1.075V–1.85V

PT7742

3.3V

Booster

—

—

PT7743

5V

Booster

—

—

PT7615—5V

20-A Low-Voltage Programmable

Integrated Switching Regulator

Programming Information

VID4=1

VID4=0

VID3 VID2 VID1 VID0

Vout

Vout

1111

1.075V

1.475V

1110

1.100V

1.500V

1101

1.125V

1.525V

1100

1.150V

1.550V

1011

1.175V

1.575V

1010

1.200V

1.600V

1001

1.225V

1.625V

1000

1.250V

1.650V

0111

1.275V

1.675V

0110

1.300V

1.700V

0101

1.325V

1.725V

0100

1.350V

1.750V

0011

1.375V

1.775V

0010

1.400V

1.800V

0001

1.425V

1.825V

0000

1.450V

1.850V

Logic 0 = Pin 12 potential (Rem Sense Gnd)

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

VID4 may not be changed while the unit is operating.

PT7615

Characteristics

Symbols

Conditions

Min

Typ

Max

Units

Output Current

—20

A

—20

Input Voltage Range

4.5

—

5.5

V

Set-Point Voltage Tolerance

—

±10

mV

Temperature Variation

–40°C

—

±1.5

—

Line Regulation

—

±5

±10

mV

Load Regulation

—

±5

±10

mV

Total Output Voltage Variation

Set-point, line, load

—

–40°C

≤Ta ≤ +85°C

Efficiency

η

—

87

—

—

84

—

%

—

81

—

—

82

—

—

79

—

%

—

75

—

20MHz bandwidth

—

40

—

Transient Response

1A/µs load step, 10A and 20A

—

50

—

µSec

—

±100

—

mV

Short Circuit Threshold

—

32

—

A

Switching Frequency

300

350

400

kHz

STBY* Input Requirements

Referenced to GND

Input High Voltage

2.0

—

V

Input Low Voltage

-0.2

—

0.8

Input Low Current

Pin 5 to GND

—

0.3

—

mA

Standby Input Current

Pin 5 to GND

—

30

—

mA

External Capacitance

—

15,000

µF

Operating Temperature Range

–40

—

°C

Storage Temperature

—

-40

—

+125

°C

Mechanical Shock

Per Mil-STD-883D, Method 2002.3

1 msec, Half Sine, mounted to a fixture

—

500

—

G’s

Mechanical Vibration

Per Mil-STD-883D, Method 2007.2,

—

10

—

G’s

20-2000 Hz, Soldered in a PC board

Weight

—

Vertical/Horizontal

—

36

—

grams

Flammability

—

Materials meet UL 94V-0

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

(2) If the remote sense is not used, pin 12 must be connected to pin 13 for optimum output voltage accuracy.

(3) The STBY* control (pin 5) has an internal pull-up. If it is left open-circuit, the module will operate when input power is applied. A low-leakage (<1µA)

MOSFET must be used to control this pin. The open-circuit voltage may be as high as Vin.

(4) For operation below 0°C, Cin and Cout must have stable characteristics. Use either low ESR tantalum or Oscon® capacitors.

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

External Capacitors: The PT7615 require a minimum output capacitance of 330µF for proper operation. The PT7615 also requires an input capacitance of 1500µF,

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 Filter: An input filter inductor is optional for most applications. The inductor must be sized to handle 10ADC with a typical value of 1µH.