LPQ250 Series Data Sheet

Logic Control

Power fail

TTL Logic signal goes high 50-150 msec after 5 V output. It goes low at least 4 ms before loss of regulation

Remote on/off

Requires an external contact (N.O or N.C) to inhibit outputs

DC-OK

TTL logic goes high 50-150 msec after the output. It goes low when there is loss of regulation.

Remote sense

Compensates for 0.5 V lead drop minimum, will operate without remote sense connected. Reverse

connection protected

Environmental Specifications

Operating temperature

0 °C to 50 °C ambient; derate each output at 2.5% per degree from 50 °C to 70 °C

Storage temperature

-40 °C to +85 °C

Temperature coefficient

± 0.4% per °C

Electromagnetic susceptibility

Designed to meet IEC 801, -2, -3, -4, -5, -6, Level 3

Humidity

Operating; non-condensing 5% to 95%

Vibration

Three orthogonal axes, sweep at 1 oct/min, 5 min. dwell at four major resonances 0.7 G peak 5 Hz to

500 Hz, operational

MTBF demonstrated

> 550,000 hours at full load and 25 °C ambient conditions

Ordering Information

Model Number

Output Voltage

Minimum Load

Maximum Load

with 30CFM

Forced Air

LPQ252-C

+5 V

3 A

35 A

40 A

±2%

50 mV

+12 V

0 A

10 A

12 A

±3%

120 mV

-12 V

0 A

6 A

8 A

±3%

120 mV

± 5 - 25 V

0 A

6 A

8 A

±3%

240 mV max.

LPQ253-C

+5 V

3 A

35 A

40 A

±2%

50 mV

+15 V

0 A

10 A

12 A

±3%

150 mV

-15 V

0 A

6 A

8 A

±3%

150 mV

± 5 - 25 V

0 A

6 A

8 A

±3%

240 mV max.

1. Peak current lasting < 30 seconds with a maximum 10% duty cycle.

2. At 25 °C including initial tolerance, line voltage, load currents and output voltages adjusted to factory settings.

3. Peak-to-peak with 20 MHz bandwidth and 10 μF in parallel with a 0.1 μF capacitor at rated line voltage and load ranges.

4. 4th output 5 - 25 V factory set at 5 V.

5. Minimum Load is required.

6. If optional CF or CEF fans are not used, 30CFM forced air cooling needs to be provided and is required through the length of the power supply.

Not convection rated.

7. This product is a Component Power Supply and is only for inclusion by professional installers within other equipment and must not be operated

as a standalone product. EMC compliance to appropriate standards must be verified at the system level. This product is for sale to OEMs and

System Integrators, including through Distribution Channels. It is not intended for sale to End Users.

Notes: -CF suffix added to the model number indicates cover with top fan. -CEF suffix added to the model number indicates cover with dual end

mounted fan cover and AC inlet.