Technical Reference Notes

ALQ40/50 Series

(Open Frame Single Output Quarter Brick)

MODEL: ALQ50 SERIES

SHEET 3 OF 16

APRIL 21, 2003 - REVISION A (PRELIMINARY)

Electrical Specifications

STANDARD TEST CONDITION on a single module unless otherwise specified.

25

°C (Ambient Air)

Airflow

Refer to Figures 21 to 24

PIN 1

Enable

PIN 2

Dependent on model series

PIN 3

48V

± 2V

PIN 4

Connected to Load

-Sense

PIN 5

Trim

PIN 6

Open

+Sense

PIN 7

+Vout

PIN 8

Connected to Load (return)

ABSOLUTE MAXIMUM RATINGS

Stresses in excess of the absolute maximum ratings can cause permanent damage to the converter. Functional

operation of the device is converter is not implied at these or any other conditions in excess of those given in the

operational section of the specs. Exposure to absolute maximum ratings for extended period can adversely affect

device reliability.

Parameter

Device

Symbol

Min

Typ

Max

Unit

Input Voltage

1

Continuous

Transient (100ms)

All

All

0

0

-

-

75

100

Vdc

Vdc

Isolation Voltage

Input to Output

All

1500

-

-

Vdc

Operating Ambient Temperature

All

-40

-

+85

ºC

Storage Temperature

All

-40

-

125

ºC

Operating Humidity

All

-

-

-

85

%

Maximum Enable Voltage

All

25

Vdc

Max Output Power

F (3.3V)

-

-

132

W

G (2.5V)

-

-

125

W

Y (1.8V)

-

-

90

W

K (1.2V)

-

-

60

W