apa18t04 Astec Powe, apa18t04 Datasheet - Page 8

• Manufacturer Part Number: apa18t04
• Description: Apa18t04 ?c 3.0-5.5vin, 18a, Non-isolated Dc ?c Dc Sip Converter
• Manufacturer: Astec Powe

APPENDIX A2: INPUT REFLECTED RIPPLE TEST SETUP
Note: Measure input reflected-ripple current with a simulated source inductance (Ltest) of 1uH. Capacitor Cs offsets
possible battery impedance. Measure current as shown above.
Input capacitors:
C1,C2: Use 150uF/6.3V special polymer(Sanyo 6TPE150M ,or Panasonic EEFUE0J151R).C3: 2.2uF/6.3V Ceramic
Model: APA18T04 Series
Date: Aug 2005
Vin+
Vin-
L1
Cin
1000uF
C1
150uF
Figure 2. Input Reflected-ripple current Test Setup.
C2
150uF
APA18T04 DC - DC Series
Technical Reference Note
C3
2.2uF
Vin
Enable
APA18
Gnd
Trim
Vo
R1
SH 8 OF 26
C4
150uF
C5
150uF
C6
1uF
Vo+
Vo-