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Note A:

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

Efficiency vs Output Current

Power Dissipation vs Output Current

Output Ripple vs Output Current

PT6470 Series

14-A 3.3-V Input Adjustable

Integrated Switching Regulator

Pin Descriptions

with respect to the common GND.

This is the regulated output voltage from the mod-

ule with respect to the common GND.

GND:

The common node to which the input, output, and

external control signals are referenced.

Inhibit*:

This is an open-collector (open-drain) negative

logic input that is referenced to GND. Pulling this pin

low disables the module’s output voltage. If Inhibit* is

left open-circuit, the output will be active whenever a

valid input source is applied.

Typical Characteristics

This pin is used to trim the output voltage

over a typical range of ±15 % of nominal. The adjust-

ment method uses an external resistor. The resistor is

in order to adjust the output either up or down, respec-

tively.

Vsense:

An external remote sense input is provided to

allow the regulation circuit to compensate for voltage

drop between the module and the load. For optimal

desired, Vsense may also be left open circuit.

50

60

70

80

90

100

0246

8

10

12

14

Iout (A)

PT6472

PT6473

PT6474

PT6475

PT6476

PT6477

0

5

10

15

20

25

30

35

0246

8

10

12

14

Iout (A)

PT6475

PT6474

PT6473

PT6476

PT6477

PT6472

0

1

2

3

4

5

02468

10

12

14

Iout (A)

SLTS180A - JANUARY 2003 - REVISED JUNE 2003