Technical Reference Notes
APC18T04 Series
Electrical Specifications (continued)
OUTPUT SPECIFICATIONS
Parameter
Device Symbol
Min
Typ
Max
Unit
Dynamic Response (CO = 10uF
Tantalum + 1uF Ceramic)
∆IO/∆t
-
Load Change of 50% step
-
2.5
-
A/µs
anywhere between 10% to 100%
of rated load
Peak Deviation
All
-
Settling Time to VO, Nom <5%
-
Peak deviation
Dynamic Response (CO = 150uF
x2 Special Polymer Aluminum
∆IO/∆t
Capacitors)
Load Change of 50% step
anywhere between 10% to 100%
of rated load
-
300
350
mV
-
25
50
µs
2.5
A/µs
Peak Deviation
Settling Time to VO, Nom <5%
All
Peak deviation
Output Voltage Trim Range6
All
Remote Sense
All
150
200
mV
150
200
µs
0.75
3.63
V
-
10%
V
NOTE: 1. The converter is not internally fused.
2. External input capacitance required. See Figure 1.
3. Refer to Appendix A3 for the output ripple and Noise Test Measurement Setup.
4. Output current limited by 60W/Vo. Output Power Derating applies at elevated temperature. See Thermal
Derating Curves.
5. OCP and OTP are in hiccup mode. The converter will auto restart once the fault is removed.
6. The voltage difference between input and output must be greater than 0.7V.
MODEL: APC18T04 SERIES
JULY 27, 2005 - REVISION A
SHEET 4 OF 13