Technical Reference Note
APA18T04 DC - DC Series
APA18T04 – 3.0-5.5Vin, 18A, Non-isolated DC – DC SIP Converter
The single output APA18T04 is a non-isolated, 60W, SIP footprint Point-of-Load (POL) DC/DC converter. The new
APA18T04 series can deliver an adjustable output voltage range from 0.75V – 3.3V at 18 Amps (A) with efficiency as high
as 93.5%, and the input voltage range is from 3.0 – 5.5V.
Electrical Parameters
Input
Input range
Input Surge
Efficiency
Output
Load current
Line Regulation
Load Regulation
0.75Vo
0.75 < Vo < 3.3V
3.3V
≤
Vo
Noise / Ripple
Enable
Transient Response
(with ouput cap
100uF Tantalum +
1uF ceramic)
3.0 to 5.5 VDC
6V / 100ms
95%@3.3Vo (Typical
)
18Amax (Po
≤
60W)
< 0.5%
10mV
15mV
30mV
50mV
p-p
max
TTL compatible
300mV typical deviation
For load change of 50% step
Between 10% to 100% of load
100uS(max) recovery
+10% Vo
2.7 –3.0V (Typ)
120°C
Special Features
•
•
•
•
•
•
•
•
Point of Load (POL) applications
High current slew rate at 1A/uS
Industry standard footprint
Open frame SIP
-40°C to +85°C Ambient operating temperature
Positive enable function
Low output ripple and noise
Adjustable output voltage through external resistor
programming
• Regulation to zero load
Environment Specifications
-40°C to +85°C Operating temperature
-40°C to +125°C Storage temperature
MTBF: >1 million hours
ROHS Compliant
Remote Sense
Turn on input voltage
Over Temperature
Protection
OCP/OTP
Hiccup – auto recovery
Safety
UL, cUL
TUV
60950 Recognized
EN60950 Licensed
Model: APA18T04 Series
Date: Aug 2005
SH 1 OF 26
ASTEC [ Astec America, Inc ]
