PT6729 datasheet(2/8 Pages) TI

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PT6725 Series

14-A 12V-Input Adjustable

Integrated Switching Regulator

Specifications (Unless otherwise stated, Ta =25°C, Vin =12V, Cin =1,000µF, Cout =330µF, and Io =Iomax)

PT6725 SERIES

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Output Current

Ta =+60°C, 200LFM

Vo≤2.5V

0.1 (1)

—14

Ta =+25°C, natural convection

Vo >2.5V

0.1 (1)

—13

Input Voltage Range

Vin

Over Io Range

10.8

—

13.2

VDC

Set Point Voltage Tolerance

Vo tol

—

±1

±1.5 (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

±10

Total Output Voltage Variation

∆Votot

Includes set-point, line, load,

—

±2±3%Vo

–40°

≤Ta ≤ +85°C

Efficiency

Io =9.0A

Vo =5.0V

—

Vo =3.3V

—

Vo =2.5V

—

87—

Vo =1.8V

—

Vo =1.5V

—

Vo =1.2V

—

Vo Ripple (pk-pk)

20MHz bandwidth

—

mVpp

Transient Response

ttr

5A/µs load step, 50% to 100% Iomax

—

µs

∆Vtr

Vo over/undershoot

—

±100

—

Short Circuit Threshold

Isc threshold

—

Switching Frequency

ƒs

Over Vin and Io range

300

350

400

kHz

Remote On/Off (Pin 2)

Referenced to –Vin (pin 8)

Input High Voltage

VIH

—

Open (3)

Input Low Voltage

VIL

–0.1

—

+0.4

Input Low Current

IIL

—

–0.5

–

Standby Input Current

Iin standby

pins 2 & 8 connected

—

0.5

1.0

External Output Capacitance

Cout

See application schematic

330

—

15,000

µF

External Input Capacitance

Cin

See application schematic

1,000

—

µF

Operating Temperature Range

Over Vin range

-40 (4)

—

+85 (5)

°C

Storage Temperature

—

-40

—

+125

°C

Reliability

MTBF

Per Bellcore TR-332

7.8

—

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,

—

15 (6)

—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) If the remote sense feature is not being used, connect the Remote Sense Gnd (pin 7) to GND (pin 8) for optimum output voltage accuracy.

(3) The STBY* control (pin 2) 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 typically the input voltage, Vin. Refer to the application notes for other interface considerations.

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

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

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

Input/Output Capacitors: For proper operation in all applications, the PT6725 series requires a 1,000µF input capacitor (Cin) with a minimum 1.6Arms ripple current

rating. And a 330µF output capacitor (Cout) with a maximum ESR of 50mΩ at 100kHz. For transient or dynamic load applications, additional output capacitance may be

necessary. The maximum allowable output capacitance is 15,000µF. For more information consult the related application note on capacitor recommendations.

Input Inductor: An input filter inductor is optioinal for most applications. The inductor must be sized to handle 6.5ADC with a typical value of 1µH.

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