Model: APA18T04 Series

Date: Aug 2005

SH 4 OF 26

Technical Reference Note

APA18T04 DC - DC Series

ABSOLUTE MAXIMUM RATINGS

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

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

sections of this specification. Exposure to absolute maximum ratings for extended periods can adversely affect

device reliability. The converter shall be designed, labeled and safety approved for maximum continuous rating as

follows:

Parameter

Device

Symbol

Min

Typ

Max

Unit

Input Voltage

Continuous

Transient (100ms)

All

-0.3

-

-

-

6

8

Vdc

Operating Temperature

All

Ta

-40

-

85

ºC

Storage Temperature

All

-55

-

125

ºC

Operating Humidity

All

-

10

-

85

%

Max Voltage at Enable Pin

All

-

-

12

Vdc

Max Output Power

All

-

-

59.4

W

4.3

INPUT SPECIFICATIONS

Parameter

Device

Symbol

Min

Typ

Max

Unit

Operating Input Voltage Range

All

3.0

3.3/5.0

5.5

Vdc

Input Under-Voltage Lock-out

T_ON Threshold

T_OFF Threshold

0.75V=Vo

<2.5V

2.7

2.4

2.9

2.6

3.0

2.7

Vdc

Input Current

T04

-

-

18.0

A

Vo:3.3V

Vo:0.75V

-

-

-

-

0.5

0.3

W

Input Ripple Current

1

5Hz to 20MHz

All

-

-

300

mAp-p

Input Voltage Rise Time

10% to 90% of Vout

All

NA

-

-

V/ms

Inrush Current

All

NA

-

-

Apk