SLTS019B datasheet(2/11 Pages) TI1

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PT3340 Series

30-W 24/48-V Input

Isolated DC/DC Converter

Specifications (Unless otherwise stated, Ta =25°C, Vin =24V, Cout =330µF, and Io =Iomax)

PT3340 SERIES

Characteristic

Symbol

Conditions

Min

Typ

Max

Units

Output Current

Over Vin range

Vo = 15V

0.1

(1)

—

2.0

Vo = 12V

0.1

(1)

—

2.5

Vo =5.0V

0.25 (1)

—

6.0

Vo ≤ 3.3V

0.25 (1)

—

8.0

Input Voltage Range

Vin

Over Io Range

18.0

24.0

60.0

Set Point Voltage Tolerance

Vo tol

Vo≥5.0V

—

±1

±1.5

%Vo

Vo≤3.3V

—

±33

±50

Temperature Variation

Regtemp

–40°

≤Ta ≤ +85°C

—

±0.5

—

%Vo

Line Regulation

Regline

Over Vin range

Vo≥5.0V

—

±0.2

±1.0

%Vo

Vo≤3.3V

—

±7

±33

Load Regulation

Regload

Over Io range

≥5.0V

—

±0.4

±1.0

%Vo

Vo≤3.3V

—

±13

±33

Total Output Voltage Variation

∆Votot

Includes set-point, line, load,

Vo≥5.0V

—

±2

—

%Vo

–40°

≤Ta ≤ +85°C

Vo≤3.3V

—

±67

—

Efficiency

Vo = 15V

—

Vo = 12V

—

Vo =5.0V

—

Vo =3.3V

—

Vo Ripple (pk-pk)

20MHz bandwidth

Vo ≥ 5.0V

—

1.0

2.0

%Vo

Vo ≤ 3.3V

—

mVpp

Transient Response

ttr

0.1A/µs load step, 50% to 100% Iomax

—

100

200

µs

∆Vtr

Vo over/undershoot

Vo ≥ 5.0V

—

±3.0

±5.0

%Vo

Vo ≤ 3.3V

—

±100

±150

Short Circuit Current

Isc

—

2xIomax

—

Switching Frequency

ƒs

Over Vin range

Vo>10V

450

500

550

kHz

Vo <10V

700

750

800

Under-Voltage Lockout

UVLO

Vin increasing

—

Vin decreasing

—

Remote On/Off Input (pin 2)

Referenced to –Vin (pins 4–6)

Input High Voltage

VIH

2.5

—

15 (2)

Input Low Voltage

VIL

–0.2

—

+0.8

Input Low Current

IIL

–3

–6

–10

µA

Standby Input Current

Iin standby

pins 2 & 4 connected

—

Internal Input Capacitance

Cin

—

0.66

—

µF

External Output Capacitance

Cout

Between +Vo and –Vo

Vo ≥ 9V

260

330

600

(3)

µF

Vo ≤ 5V

260

330

1,000 (3)

Isolation Voltage

Input-output/input-case

1500

—

Vdc

Capacitance

Input-output

—

1200

—

Resistance

Input-output

—

Ω

Operating Temperature Range

Over Vin range

-40 (4)

—

+85 (5)

°C

Maximum Case Temperature

—

100

°C

Storage Temperature Range

—

-40

—

+125

°C

Reliability

MTBF

Per Bellcore TR-332

5.0

—

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

—

Per Mil-Std-883D, method 2007.2,

—

G’s

20-2000Hz, soldered to board

Weight

—

grams

Flammability

—

Materials meet UL 94V-0

Notes:

(1) The DC/DC converter will operate at no load with reduced specifications.

(2) The Remote On/Off input has an internal pull-up. If it is left open circuit the module will operate when input power is applied. A low-leakage

(<100nA) MOSFET is recommended to control this input. The open-circuit voltage is less than 10V. See application notes for interface considerations.

(3) Output capacitor values are absolute. Allowances must be made for any additional de-coupling capacitors and the total external capacitor tolerance.

The value of external capacitance is limited due to regulator startup current requirements. Consult the factory for further details.

(4) For operation below 0°C, the required external output capacitor must have temperature stable characteristics. E.g. Tantalum or Oscon® types.

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

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