PT8103C datasheet(4/14 Pages) TI

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PT8100 Series

40-A 3.3/5-V Input Programmable

Integrated Switching Regulator

PT8101 /2 Specifications (Unless otherwise stated Ta =25°C, C1 =1,500µF, C2 =660µF, Vin =5V, & Io =40A )

PT8101/2, Vin =5V

Characteristics

Symbols

Conditions

Min

Typ

Max

Units

Output Current

25°C, natural convection

0.1 (1)

—38

60°C with 200LFM airflow

0.1 (1)

—40

Input Voltage Range

Vin

Over Io Range

4.5

—

5.5

Set-Point Voltage Tolerance

Vo tol

Over Vo range

—

±1

±2

Line Regulation

∆Regline

Over Vin range

—

±5

—

Load Regulation

∆Regload

Over Io range

—

±5

—

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 =20A

Vo =2.5V

—

Vo =1.8V

—

Vo =1.5V

—

Vo =1.2V

—

Io =40A

Vo =2.5V

—

Vo =1.8V

—

Vo =1.5V

—

Vo =1.2V

—

Vo Ripple (pk-pk)

20MHz bandwidth

—

Transient Response (Vo =1.8V)

ttr

1A/µs load step, 50% to 100% Iomax

—

µSec

∆Vtr

Vo over/undershoot

—

Transient Response (Vo =1.2V)

ttr

1A/µs load step, 50% to 100% Iomax

—

µSec

∆Vtr

Vo over/undershoot

—

Short Circuit Threshold

Iosc

—

Switching Frequency

ƒo

Over load range

300

350

400

kHz

Standby Control (pin 6)

Input High Voltage

VIH

Referenced to GND (pins 17–22)

—

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

See application schematic

660 (5)

—

15,000

µF

External Input Capacitance

See application schematic

1,500

—

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

—

500

—

G’s

Mechanical Vibration

Mil-STD-883D, Method 2007.2

Vertical

—

20 (6)

—

G’s

20-2000 Hz, soldered in PCB

Horizontal

—

20 (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 module 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 PT8100 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: The filter components L1, and C3 are optional for most applications. The inductor must be rated to handle the projected input current. A rating of 30ADC

is recommended. The capacitance C1 must be rated for a minimum of 1Arms of ripple current. For transient or dynamic load applications, additional capacitance may

be required. For more information refer to the application note on capacitor recommendations for this product.

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