Technical Reference Notes
ALQ25 Series
(Open Frame Single Output Quarter Brick)
OUTPUT SPECIFICATIONS
Parameter
Over Voltage Protection Range
Device
A (5.0V)
Symbol
Min
6
Typ
Max
7
Unit
V
Over Temperature Range
(AVG PCB TEMPERATURE)
All
A (5.0V)
η
110
89
-
91
120
-
-
-
-
20
°C
%
Efficiency
V
IN
= V
IN-NOM
; I
O
= I
O,MAX
T
A
=25°C
Turn-On Response Time
V
IN
= V
IN-MIN to
V
IN-MAX
Switching Frequency
Dynamic Response
5
:
∆I
O
/∆t=0.1A / uS
All
All
-
-
-
-
-
-
200
ms
KHz
-
0.1
-
A/µs
mV
µs
Load Change from I
O
= 10% to 100% of
I
O, Max
:
Peak Deviation Settling Time to V
O, Nom
5V
-
-
-
-
-
-
500
250
Load Change from I
O
= 50% to 25% of
I
O, Max
:
Peak Deviation Settling Time to V
O, Nom
Output Overshoot
at T-on / T-off
Passive Resistive Full Load
Note:
5V
All
-
-
-
-
-
-
-
-
250
400
-
mV
µs
%Vo
5
3. See Figure 2 for Ripple and Noise test measurement setup.
4. Appropriate Thermal Derating applies. See Figure 13 for the Thermal Derating Curves
5. The Dynamic Deviation and Recovery time are defined as below
MODEL: ALQ25 SERIES
Dec 1, 2003 - REVISION B
SHEET 5 OF 15
ASTEC [ Astec America, Inc ]
