LPQ SERIES

UP TO 75 WATTS

WWW

1

603 778 2300

FEATURES

• Low profile, single board construction

• Very high efficiency

• Remote Sense

• Remote On/Off (negative or

positive logic)

• Output Voltage Adjustment (industry standard)

• Water Washable

• Constant Frequency

• Overcurrent/short circuit protection

• Low cost, high performance

• No load operation

• Input undervoltage lockout

• Thermal shutdown

• Overvoltage protection

• No external filtering required

• Startup into pre-biased load

THE LPQ SERIES FROM WALL INDUSTRIES

Using industry standard quarter brick pin-out, the LPQ

series is a single board construction low profile dc/dc con-

verter. Key features are very high efficiency and low cost.

This product offers great performance in networking, tele-

com, and industrial applications.

SPECIFICATIONS: LPQ SERIES

INPUT SPECIFICATIONS

GENERAL SPECIFICATIONS

Input Voltage Range..................................................36-75VDC

Efficiency...........................................................up to 92%

Input filter........................................................................Pi type

Isolation Voltage (input to output).........................1500VDC

UVLO..........................................................................33V Typ.

Isolation Resistance.........................................100MOhms

Logic Enable................................................positive or negative

Switching Frequency............................................350 KHz

OUTPUT SPECIFICATIONS

Output Current............................................................See table

ENVIRONMENTAL SPECIFICATIONS

Voltage Accuracy................................................................±1%

Line Regulation(LL-HL).......................................................0.1%

Operating Temperature........................-40°C to +125°C Tj

Load Regulation................................................................0.2%

Storage Temperature...............................-50°C to +125°C

Short Circuit Protection..............................................continuous

Humidity (non-condensing)..........................................95%

Ripple/Noise (20MHz BW)...........................................100mVpp

Thermal Shutdown.........................................115°C (PCB)

Transient Repsonse (25% load step)..............100 us (to 1% Vout)

Overvoltage Protection.......................................................125%

PHYSICAL SPECIFICATIONS

Output Trim.......................................................................±10%

Package size.....................................1.45” X 2.28” X 0.45”

Power Foldback..................................................130% rated Po

Weight..............................................................1.0 oz. typ.

Minimum Load Required....................................................None

Pinout....................................................Industry Standard

Due to advances in technology, specifications subject to change without notice.

11/16/02