LCM300 Data Sheet

Environmental Specifications

Operating temperature

-40 °C to +70 °C, linear derating to 50% from 50 °C to 70 °C

Storage temperature

-40 °C to +85 °C

Humidity

20 to 90%, non-condensing. Operating. Conformal coat option available

Fan noise

< 45 dBA, 80% load at 40 °C; Fan Off when unit is inhibited

Altitude

Operating - 16,405 feet (5000m)

Storage - 30,000 feet

Shock

MIL-STD-810F 516.5, Procedure I, VI. Storage

Vibration

MIL-STD-810F 514.5, Cat. 4, 10. Storage

Electrical Specifications

Output

Output rating

See table 1

90 - 264 Vac

Set point

±0.5%

90 - 264 Vac

Total regulation range

Main output ±2%

5 Vsb ±1%

Combined line/load/transient when measured at output

terminal

Rated load

310 W (360 W for current Q and U variants)

Derate linear to 50% from 50 °C to 70 °C

Minimum load

Main output @ 0.0 A

5 Vsb @ 0.0 A

No loss of regulation

Output noise (PARD)

1% max p-p

100 mV max p-p

Main output

5 Vsb output

Measured with a 0.1 μF Ceramic and 10 μF Tantalum

Capacitor on any output, 20 MHz

Output voltage overshoot

No overshoot/undershoot outside the regulation band during

on or off cycle

Transient response

< 300 µSec

50% load step @ 1 A/µs

Step load valid between 10% to 100% of output rating

Recovery time to within 1% of set point at onset of transient

Max units in parallel

Up to 10

Short circuit protection

Protected, no damage to occur

Bounce mode

Remote sense

Compensation up to 500 mV

Output isolation

Standard per safety requirements

Forced load sharing

To within 10% of all shared outputs

Analog sharing control

Overload protection (OCP)

105% to 125%

120% to 170%

Main output

5 Vsb output

Overvoltage protection (OVP)

125% to 145%

110% to 125%

12 V output

5 Vsb output

Ordering Information

Model

Number*

Output

Nominal Output

Voltage Set Point

Set Point

Tolerance

Adjustment Range

Current

Output Ripple

P/P (0-50 ˚C)

Max Continuous

Power

Combined Line/

Load Regulation

Min

Max

LCM300L

12 V

12 V

±0.5%

9.6 - 14.4 V

0 A

25.0 A

120 mV

310 W

2%

LCM300N

15 V

15 V

±0.5%

14.25 - 19.5 V

0 A

20.0 A

150 mV

310 W

2%

LCM300Q

24 V

24 V

±0.5%

19.2 - 28.8 V

0 A

12.5 A*

240 mV

310 W

2%

LCM300U

36 V

36 V

±0.5%

28.8 - 43.2 V

0 A

8.4 A*

360 mV

310 W

2%

LCM300W

50 V

48 V

±0.5%

43.0 - 60.0 V

0 A

6.3 A

480 mV

310 W

2%

* 14.5 A rating on LCM300Q-T and 9.7 A on LCM300U-T when max temp does not exceed 45C (Total Power = 350 W)