Astec Conventional Power
25 Watts
AA25N
Total Power:
Input Voltages:
No. of Outputs:
25 Watts
24V or 48V
Single, Dual, Triple
Electrical Specs
Input
Input range
Input capacitance
Input reverse voltage
protection
Input surge voltage
18-36 Vdc (24 Vdc nominal)
36 - 75Vdc (48Vdc nominal)
2mF typical
Fuse recommended
100V for 100mS (048L)
50V for 100mS (024L)
36V for 100mS (012L)
<10mA (P-P)
See Note 2
Vin<32V (-048L ONLY)
82% typical
Main Output
±1.0%
Aux Output ±3.0%
Dual Output ±2.0%
Main Output
±0.1%
Aux Output ±0.5%
Dual Output ±0.2%
Main Output
±0.75%
Aux Output ±3.0%
Dual Output ±0.5%
(10% to 100% load) Note 6.
50mV P-P, Singles
100mVp-p, Dual , Triple
Continuous power cycle
120% of V0, Typ
2% Vo typ; recovery <500msec typ
(25% step load change to within 1%Vo)
±0.2%/°C
350kHz
Input reflected ripple
Undervoltage lockout
Efficiency
Output
Special Features
• Ideal for telecom/networking
applications
• High efficiency
• Unencapsulated 2.0” x 2.0” x 0.50” package.
• Integral heat spreader available
• 100°C Baseplate temperature
• Enable (on/off)
• Thermal protection
• 350kHz Switching frequency
• Under voltage lockout
Voltage tolerance
Line regulation
Load regulation
Noise/ripple
Short circuit protection
Overvoltage protection
Transient response
Temperature coefficient
Switching frequency
Environmental
Operation case temperature range: -40°C to
+100°C
Storage temperature: -40°C to +125°C
Humidity: 5% to 100%
Control
Enable
on =2.5 to 5.5Vdc or open circuit
off = 0 to 0.8Vdc
Ref. to -Vin. TTL compatible
Input current (enable OFF) <10ma
Output trim
Single output models
Thermal shutdown
110°C Baseplate temperature (typ)
Auto reset
Isolation
Safety
UL
CAN
TUV
UL1950
CAN22.2-950
EN60950
I/O isolation
Isolation resistance
1500Vdc
15 x 108 ohms
70
America’s (USA): 1-888-41-ASTEC
Europe (UK): 44 (1384) 842-211
Asia (HK): 852-2437-9662
AMERICAS
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
VDC
18-36
18-36
36-75
36-75
36-75
36-75
Output 1
Voltage
12V @ 2.08A
15V @ 0.83A
3.3V @ 6A
5V @ 5A
5V @ 5A
5V @ 2.5A
Output 2
Voltage
-15V @ 0.83A
Output 3
Voltage
Output
Power
25W
25W
19.8W
25W
25W
25W
Model Number
AA25N-024L-120S
AA25N-024L-150D
AA25N-048L-033S
AA25N-048L-050S
AA25N-048L-050D033
AA25N-048L-050T120
3.3V @ 6A
12V @ 0.52A
-12V @ 0.52A
Notes:
Max output power not to exceed 25W total. The sum of output currents not to exceed 6 Amps.
Any output loading ratio within the maximum specified limits is possible.
Pin Assignments
Single Output
1.
2.
3.
4.
5.
6.
7.
8.
+Vin
-Vin
No Pin
Enable
No Pin
V1 Out
Comm
Trim
Dual Output
1.
2.
3.
4.
5.
6.
7.
8.
+Vin
-Vin
No Pin
Enable
V1 Out
Comm
V2 Out
N/C
Triple Output
1.
2.
3.
4.
5.
6.
7.
8.
+Vin
-Vin
No Pin
Enable
V2 Out
V1 Out
Comm
V3 Out
.52
(13.2)
.20 (5.0)
MIN.
.040 (1.01)
DIA. TYP.
2.0
(50.8)
.015 (.3
MIN.
.10
(2.54)
1.80
(45.72)
Notes:
1. 20 MHz bandwidth. An external 2.2mf ceramic
capacitor is recommended to be placed from +V out
to -V out.
2. 12V and 24V Input models require external capacitor
connected between +V in and -V in to meet FCC class
A and ETS300-386-1 requirements for conducted
noise. Consult Factory for filtering information to
meet FCC class B , VDE or EIC specifications.
3. All specifications are typical at nominal line, full load,
and 25° C unless otherwise noted.
4. All specifications subject to change without notice.
Mechanical drawings are for reference only.
5. Please refer to the Technical Reference Notes for more
information.
6. Balanced loads on dual and Aux output voltage.
7. Warranty: 1 yr
5
.90
(22.86)
2.00
(50.8)
2.00
(50.8)
.40
(10.16)
6
1
2
7
3
4
8
.40
(10.16)
.40
(10.16)
.40
(10.16)
.40
(10.16)
Case material: Metal base/cover
Weight: 2.5 Oz / 68Gr.
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