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Special Features

Electrical Specs

Special Features

40 Amps

• High efficiency (91% Typical)

• -40°C to +70°C Ambient Air Operation

• Industry standard package

1.48" x 2.30" x 0.38"

• High capacitive load limit on start-up

• Remote sense compensation

• Basic insulation

• Regulation to zero load

• Fixed frequency switching (200KHz)

Input

Input Range

36 to 75 VDC

Input Surge

100V /100ms

Efficiency

91%@3.3V Typ

Output

Load Regulation

10mV typical down to no load

(3V3 output and below)

Line Regulation

10mV typical

(3V3 output and below)

Voltage Tolerance

±1%

Noise/Ripple

100mV max typ

150mV max for 5V

Remote sense

Up to 10% of Vo

Transient Response

5% max deviation with 25% to 75% full

(output 5V and above)

200mV (output below 5V)

500µs (max) recovery

Overvoltage Protection

140% nominal output

Current Limit

140% nominal output

Switching Frequency

200KHz (typ)

Control

Voltage Adjust

90 to 110% for 5V output

80 to 110% for 3.3V and below

Enable

TTL compatible

(positive & negative enable options)

Ambient air operating temperature range:

-40°C to +70°C

Storage temperature: -40°C to +125°C

Overtemperature protection: 115°C typical

MTBF: > 1 million hours

UL,cUL 60950

TUV

EN60950

Environmental

Total Power:

144W

Input Voltages:

48V

No. of Outputs:

Single

Safety

ALQ40

High Efficiency Quarter Brick

Preliminary

REV 03: Dec 2003