PT6345 datasheet(2/9 Pages) TI

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PT6340 Series

6-A 12-V Input Adjustable

Integrated Switching Regulator

Specifications (Unless otherwise stated, Ta =25°C, Vin =12V, Cin =100µF, Cout =330µF, and Io =Iomax)

PT6340 SERIES

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Output Current

Ta =+60°C, 200LFM

0.1 (1)

—6

Ta =+25°C, natural convection

0.1 (1)

—6

Input Voltage Range

Vin

Over Io Range

10.8

—

13.2

VDC

Set Point Voltage Tolerance

Vo tol

—

±1±2%Vo

Temperature Variation

Regtemp

–40°

≤Ta≤ +85°C, Io =Iomin

—

±0.5

—

%Vo

Line Regulation

Regline

Over Vin range

—

±5

±10

Load Regulation

Regload

Over Io range

—

±5

±15

Total Output Voltage Variation

∆Votot

Includes set-point, line, load,

—

±2±3%Vo

–40°

≤Ta ≤ +85°C

Efficiency

Io =4A

Vo =5.0V

—

Vo =3.3V

—

Vo =2.5V

—

Vo =1.8V

—

Vo =1.5V

—

Vo =1.2V

—

Vo Ripple (pk-pk)

20MHz bandwidth

—

mVpp

Transient Response

ttr

1A/µs load step, 50% to 100% Iomax—

—

µs

∆Vtr

Vo over/undershoot

—

±60

—

Short Circuit Threshold

Isc threshold

—

8.5

—

Switching Frequency

ƒs

Over Vin and Io range

300

350

400

kHz

Inhibit (Pin 1)

Referenced to GND (pin 5)

High-Level Input Voltage

VIH

Vin–0.5

—

Open (2)

Low-Level Input Voltage

VIL

–0.2

—

+0.5

Low-Level Input Current

IIL

—

–0.5

–

Standby Input Current

Iin standby

pins 1 & 5 connected

—

+0.5

—

External Output Capacitance

Cout

See application schematic

330

—

1,000

µF

External Input Capacitance

Cin

See application schematic

100

—

µF

Operating Temperature Range

Over Vin range

–40 (3)

—

+85 (4)

°C

Storage Temperature

—

–40

—

+125

°C

Reliability

MTBF

Per Bellcore TR-332

8.8

—

106 Hrs

50% stress, Ta =40°C, ground benign

Mechanical Shock

—

Per Mil-Std-883D, method 2002.3,

—

500

—

G’s

1ms, half-sine, mounted to a fixture

Mechanical Vibration

—

Mil-Std-883D, Method 2007.2,

—

20 (5)

—

G’s

20-2000Hz, soldered in PCB

Weight

—

grams

Flammability

—

Materials meet UL 94V-0

Notes:

(1) The ISR will operate at no load with reduced specifications.

(2) The Inhibit control (pin 1) has an internal pull-up and if it is left open circuit the module will operate when input power is applied. The open-circuit

voltage is the input voltage Vin. Use a discrete MOSFET to control the Inhibit pin, and ensure a transitioin time of less than ≤10µs. Consult the related

application note for other interface considerations.

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

(4) See Safe Operating Area curves or contact the factory for the appropriate derating.

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

Input/Output Capacitors:

The PT6340 regulator series requires a 100µF electrolytic (or tantalum) capacitor at the input and 330µF at the output for proper

operation in all applications. In addition, the input capacitance, Cin, must be rated for a minimum of 740mArms of ripple current, and the ESR of the output

capacitor, Cout, must less than 50mΩ @100kHz. For transient or dynamic load applications additional output capacitance may be necessary. For more information

consult the related application note on capacitor recommendations.

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