Special Features
Electrical Specs
20 Watts
AA20C
• 20 W, Single output
• 2:1 Input range
• Unencapsulated package
• 1.6" x 2.0" x 0.38 case
• Replaces AA20B series
• Industry standard package
Operating base temperature range:
-40°C to +105°C (full load, no derating)
Storage temperature: -55°C to +125°C
Humidity: 5% to 95% (non-condensing)
EMI RFI Shielding: Six sided (except 033-M1)
MTBF: 361,000 hours (MIL HDBK-217)
UL UL1950 Recognition
CSA CSA22.2-950 Recognition
TUV EN60950 Recognition
Input
Input range 36 to 75 VDC
Input capacitance 1.6µF typ (48 models)
No load input power 150mW max
Efficiency 84% typical (5V)
Output
Voltage tolerance ±1.0%
Overall regulation ±2% max
Noise/ripple 1% (mV P-P)
Short circuit protection Continuous Power Cycle
Overvoltage protection Zener Clamp (125% of nom)
Transient response 1 msec typical (50% step load
change to within 1%Vo)
Temperature Coefficient ±0.02 °C
Switching frequency 400kHz
Isolation
I/O isolation 1500 VDC
Isolation resistance 1 x 109 (Ohms)
Isolation capacitance 220pF
Environmental
Total Power: 20 Watts
Input Voltages: 48V
No. of Outputs: Single
Safety
Astec Industry Standard
America’s (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662
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EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone: 44 (1384) 842-211
Facsimile: 44 (1384) 843-355
AMERICAS
5810 Van Allen Way
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
Ordering Information
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
Input Output Efficiency Model Number
Voltage Voltage
36-75 V 3.3V @ 6.0 A 79% AA20C-048L-0335-M1
36-75 V 5.0V @ 4.0 A 84% AA20C-048L-050S
36-75 V 12V @ 2.0 A 87% AA20C-048L-120S
NOTES:
Enable Function
"1" = negative logic enable (std, without "1 or 4" = no enable)
"4" = positive logic enable (std, without "1 or 4" = no enable)
Trim Feature
"9" = Trim feature (std, without "9" no Trim)
Single Output
1. +Vin
2. -Vin
3. No pin
4. Enable
5. No pin
6. Output 1
7. COM
8. Trim
Note:
Pins 0.040 in Dia x 0.15 in min
Warranty: 1 yr
Case Material: Metal base/cover
Weight: 2.0 oz./56 grams.
Pin Assignments
AA20C Astec Industry Standard
0.40
(10.15)
0.15 MIN
(3.81)
0.40 (1.01)
DIA TYP
0.70
(17.75)
1.60
(40.64)
0.40
(10.16)
0.20
(5.08)
0.20
(5.08)
.40
(10.16)
.40
(10.16)
.40
(10.16)
1.80
(45.72)
2.00
(50.80)
0.10 (2.54)
BOTTOM VIEW
ALL DIMENSIONS ARE IN INCHES (mm)
1
2
3
4
5
6
7
8
6
TRIM DOWN
8
TRIM UP
7
8
6
ADJ.
7
8
TRIM DOWN
TRIM UP
TRIM
SINGLE OUTPUT
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