Technical Reference Note
APA18T12 DC - DC Series
Preliminary
APA18T12 - 12Vin, 75Watts, Non-isolated DC – DC POL SIP Converter
The single output APA18T12 is a non-isolated, 75W, SIP footprint Point-of-Load (POL) DC/DC converter. The new
APA18T12 series can deliver an adjustable output voltage range from 0.75V – 5.5V at 18 Amps (A) with efficiency as high
as 93.5%, and the input voltage range is from 10 – 14V.
Electrical Parameters
Input
Input range
Input Surge
Efficiency
Output
Line Regulation
Load Regulation
0.75Vo
0.75 < Vo < 3.3V
3.3V
≤
Vo
Regulation
Over operating
Temperature range
Noise / Ripple
0.75 – 5Vo
> 5Vo
Enable
Transient Response
10 to 14 VDC
15V
92%@3.3Vo (Typical
)
< 0.5%
7mV
15mV
25mV
< 1.0%
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
60mV
75mV
TTL compatible
200mV typical deviation
For load change of 50% step
Between 10% to 100% of load
200uS(max) recovery
0.25V
8.7 – 9.7V (Typ)
Hiccup – auto recovery
Safety
UL, cUL
TUV
60950 Recognized
EN60950 Licensed
Remote Sense
Turn on input voltage
OCP/OTP
Model: APA18T12 Series
Date: June 2004
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ASTEC [ Astec America, Inc ]
