146 USA: 1-888-41-ASTEC Europe (UK): +44(0)1384-842211 Asia (HK): 852-2437-9662
SPECIAL FEATURES
•Surface mount
•High power density 15W/Cu. in.
•Full power capability without
external heat sink
•Input differential and
common mode filtering
•Hot insertable with inrush current limit
•Ability to limit inrush current in
an external input capacitor
•Input undervoltage lockout with hysteresis
•Output overvoltage protection
•Remote shutdown
ENVIRONMENTAL
Operating ambient temperature range:
-40 to +75° C (no derating)
Cooling method: Convection
MTBF: 7.5 MHrs
Storage temperature: -55 to +125 C
SAFETY
UL 1950
IEC 950
CSA C22.2-9.50
CB 52719-106
ELECTRICAL SPECIFICATIONS
Input
Input Range:......................... 36 to 75 VDC for 48V
18 to 36 VDC for 24V
Maximum Inrush
Current Limit:........................ 1.0 A Max.
Maximum External Capacitor
to Limit Inrush
Current to 1.0 A.................... 4.0µF
Low Input Shutdown:............ 34.0 +/- 2.0 V for 48V
17.0V +/- 1.0V f or 24 V
Auto Recovery:..................... 37.0V +/- 2.0 V for 48V
18.5V +/- 1.0 V for 24V
Hysteresis: ........................... 3 V +/- 1 V for 48V
1.5V +/- 0.5V for 24V
Efficiency:............................. 85%
Enable: ................................. Open Circuit or up to 0.5V max.
Disable: ................................ 4V min., 75V max.
Output
Voltage Tolerance: ................ +/- 3% for single output
+/- 5% for dual output
Noise/Ripple: ........................ 75mV rms max.
Output Voltage
Adjust Range:....................... +/- 10% for single output
dual output non adjustable
Output Voltage Protection .... Self-limiting Clamp, 140% max.
Short Circuit Protection ........ Continuous Auto Start
Switching Frequency:........... 200kHz nominal
AK40A
15 Watts
Total Power
15 Watts
Input Voltages
48V, 24V
# of Outputs
Single
AK40A Series
Surface Mount
NOTES
1. All specifications are typical at nominal input and
full load unless otherwise noted.
2. Specification subject to change without notice.
3. Mechanical dra wings for ref erence only.
4. Minimum Load: 0.2 A (min 15%)
5. Max. Capacitive Load: 330 mF
www.astec.com
AMERICAS
5810 V an Allen Wa y
Carlsbad, CA 92008
Telephone: 760-930-4600
Facsimile: 760-930-0698
147
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EUROPE
Astec House, Waterfront Business Park
Merry Hill, Dudley
West Midlands, DY5 1LX, UK
Telephone:+44(0)1384-842211
Facsimile:+44(0)1384-843355
ASIA
6F., CDW Building
382-392 Castle Peak Road
Tsuen Wan, N.T., Hong Kong
Telephone: 852-2437-9662
Facsimile: 852-2402-4426
ORDERING INFORMATION
AK40A
Rev 7.13.99
Dimensions: Single Output: 1"W x 2"L x 0.5"H
Maximum Weight: Single Output: 20 grams
DIMENSIONS
Input V oltage Output 1 Maximum Model Number
Voltage Power
18-36 1.5V@4A 6W AK40A-024L-015F04SM
18-36 1.8V@4A 7.2W AK40A-024L-018F04SM
18-36 2.1V@4A 8.2W AK40A-024L-021F04SM
18-36 2.5V@4A 12W AK40A-024L-025F04SM
18-36 3.3V@4A 13.2W AK40A-024L-033F04SM
18-36 5.0V@3A 15W AK40A-024L-050F03SM
18-36 12V@1.25A 15W AK40A-024L-120F01SM
36-75 1.5V@4A 6W AK40A-048L-015F04SM
36-75 1.8V@4A 7.2W AK40A-048L-018F04SM
36-75 2.1V@4A 8.2W AK40A-048L-021F04SM
36-75 2.5V@4A 12W AK40A-048L-025F04SM
36-75 3.3V@4A 13.2W AK40A-048L-033F04SM
36-75 5.0V@3A 15W AK40A-048L-050F03SM
36-75 12V@1.25A 15W AK40A-048L-120F01SM
PIN ASSIGNMENTS
Single Output
1. +Vout
2. +Vout
3. +Vout
4. +Vout
5. -Vout
6. -Vout
7. -V out
8. -Vout
9. Reserved
10. Adjust
11. Reserved
12. Reserved
13. Reserved
14. Reserved
15. Reserved
16. Reserved
17. +Vin
18. Shutdown
19. -Vin
20. Reserved
