EMERSON APA18 User Manual
75 Watts
APA18
Special Features
• Point of load (POL) applications
• High Current slew rate at 1A/uS
• High efficiency - 91%@3.3V (typ)
• 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
Total Power: 75 Watts
Input Voltages: 10.0V to 14.0V
No. of Outputs: Single
Electrical Specs
Input
Input range 10.0 to 14.0V
Input Surge 15V
Efficiency 92%@3.3V (Typical)
Output
Line Regulation <0.5%
Load Regulation
0.75Vo 7mV
0.75 < Vo < 3.3V 15mV
3.3V ≤ Vo 25mV
Regulation < 1.0%
Over operating
Temperature range
Load Current 18A max *
Noise / Ripple
0.75V - 5.0V 60mV
>5.0V 75mV
Current Slew Rate up to 1A/uS
Transient Response 200mV typical deviation
for Load Change of 50% step
between 10% to 100% of load
200uS recovery
Remote Sense 0.25V
Environmental
Operating temperature
-40°C to +85°C (Ambient temperature)
Storage temperature: -55°C to +125°C
MTBF: >1million hours
Turn On Input Voltage 8.7V - 9.7V (Typ)
UVLO Hysterisis 1V (Typ)
OCP/OTP Hiccup - auto recovery
Isolation Non-isolated module
Control
Enable TTL compatible
(positive enable)
Safety
UL , cUL 60950 Recognized (Pending)
TUV EN60950 Licensed (Pending)
2
North America (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662
Note
Specifications subject to change without notice.
AMERICAS
3
Output Voltage Enable
5810 Van Allen Way
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone: 44 (1384) 842-211
Facsimile: 44 (1384) 843-355
ASIA
Units 2111-2116, Level 21
Tower1, Metroplaza
223, Hing Fong Road
Fwai Fong, New Territories
Hong Kong
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
Ordering Information
Input Output Output Current Efficiency Model Number
Voltage Voltage
10.0V - 14.0V 0.75 to 5.5V 18A* 92% (Typ)** APA18T12-9
10.0V - 14.0V 0.75 to 5.5V 18A* 92% (Typ)** APA18T12-9H
Note: * 18A max output current with total output power limitted to 75W. Airflow required.
** Typical Efficiency for 3.3V output, full load, nominal input voltage, 300LFM, Ta = 25°C
Suffix “H” for Horizontal pins
3pcs 22uF ceramic capacitors is recommended to be placed from +Vin to GND, 10uF Tantalum capacitors, 1uF
ceramic is recommended to be placed from +Vo to GND
VERTICALMOUNTINGPINS DRAWING
HORIZONTAL MOUNTINGPINS DRAWING
Pin Number Pin Connection Function
P1 Vo Output Voltage
P2 Vo Output Voltage
P3 SENSE Sense
P4 Vo Output Voltage
P5 GND Ground
P6 GND Ground
P7 Vin Input Voltage
P8 Vin Input Voltage
P9 TRIM Output Voltage
Adjustment
P10 ENABLE
www.astecpower.com Rev02 August 2004
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