PT8139C datasheet(3/9 Pages) TI1

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PT8139—12V

30-A Programmable Integrated

Switching Regulator

Specifications (Unless otherwise stated Ta =25°C, Cin =1,500µF, Cout =660µF, Vin =12V, & Io = Iomax )

PT8139 Series

Characteristics

Symbols

Conditions

Min

Typ

Max

Units

Output Current

Natural convection or

0.1 (1)

—30

60°C with 200LFM airflow

Input Voltage Range

Vin

Over Io Range

10.8

—

13.2

Set-Point Voltage Tolerance

Vo tol

Over Vo range

—

±1

±2

Line Regulation

∆Regline

Over Vin range

—

±10

—

Load Regulation

∆Regload

Over Io range

—

±10

—

Temperature Variation

∆Regtemp

–40°C

≤Ta ≤85°C

—

±0.5

—

%Vo

Total Output Voltage Variation

∆Votot

Includes set-point, line load,

—

±3

–40°C

≤Ta ≤ 85°C

Efficiency

Io =15A

Vo =3.3V

—

Vo =2.5V

—

Vo =1.8V

—

Io =Iomax

Vo =3.3V

—

Vo =2.5V

—

Vo =1.8V

—

Vo Ripple (pk-pk)

20MHz bandwidth

—

Transient Response

ttr

1A/µs load step, 50% to 100% Iomax

—

µSec

∆Vtr

Vo over/undershoot

—

100

—

Short Circuit Threshold

Iosc

—

Switching Frequency

ƒo

Over load range

300

350

400

kHz

Standby Control (pin 6)

Referenced to GND (pins 17–22)

Input High Voltage

VIH

—

Open (2)

Input Low Voltage

VIL

–0.2

—

0.8

Input Low Current

IIL

Pin 6 to GND

—

0.5

—

Standby Input Current

Iin standby

Pin 6 to GND

—

External Output Capacitance

Cout

See application schematic

660 (5)

—

30,000

µF

External Input Capacitance

Cin

See application schematic

1,500 (5)

——µF

Operating Temperature Range

Over Vin Range

–40 (3)

—+85 (4)

°C

Storage Temperature

—

–40

—

+125

°C

Mechanical Shock

Per Mil-STD-883D, Method 2002.3

1 msec, Half Sine, mounted to a fixture

—

TBD

—

G’s

Mechanical Vibration

Mil-STD-883D, Method 2007.2

Vertical

—

TBD (6)

—

G’s

20-2000 Hz, soldered in PCB

Horizontal

—

TBD (6)

Weight

—

Vertical/Horizontal

—

grams

Flammability

—

Materials meet UL 94V-0

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

(2) The Standby input (pin 6) has an internal pull-up. If it is left open-circuit the PT812x will operate when input power is applied. A low-leakage

MOSFET is recommended to control this input. The open-circuit voltage is nominally 5V. See application notes for interface considerations.

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

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

(5) The PT8120 regulators require a minimum of 660µF, low ESR ouput capacitance (1,200µF for standard aluminum electrolytic) for proper operation.

(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.

Input Filter: An input filter inductor is optional for most applications. The inductor must be rated to handle the projected input current. A rating of 10ADC for

Vout ≤3.3V, and 15ADC for Vout ≥4.5V is recommended. The input capacitance must be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic

load applications, additional capacitance may be required.

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