North America (USA): 1-888-41-ASTEC Europe (UK): 44 (1384) 842-211 Asia (HK): 852-2437-9662
2
Special Features
Electrical Specs
Special Features
Electrical Specs
66Watts
AEO/ALO25
High Efficiency
• 2.3” x 0.9” Industry Standard 8th brick outline
• Baseplate or Openframe construction
• Low Ripple and Noise
• Regulation to zero load
• High Capacitive Load start-up
• Fixed Frequency Switching for EMI predictability
• Industry Standard features: Input UVLO with
hysteresis, Enable, OVP, OCP, OTP, Output
VoltageTrim, Differential Remote Sense
• Meets Basic Insulation
• EU Directive 2002/95/EC compliant for RoHS
Environmental
Operating Ambient Temperature
Openframe: -40°C to +85°C Ambient
Baseplate: -40°C to +100°C Case
Storage temperature: -55°C to +125°C
MTBF: > 1 Million Hrs
Input
Input Range 36 to 75 VDC
Input Surge 100V /100ms
Input UVLO 33 - 36 V (UVLO ON)
31 - 34 V (UVLO OFF)
Efficiency293% @ 5 V (typical)
Output
Line / Load Regulation < 0.1% VO (typical)
Load Current Up to 25A for Vo ≤ 1.8V
Noise/Ripple120mVPK-PK (typical for Vo ≤ 2.5V )
Transient Response 2% typical deviation
(50% to 75% Step Load)
< 100µs settling time (typ)
Over Voltage Protection 130% VOTyp (autorecovery)
Over Current Protection 130% IO,max Typ (autorecovery)
Over Temperature 115ºC average PCB temperature
Protection (autorecovery)
Switching Frequency Fixed Frequency
Isolation Voltage 1500Vdc
Control
Output Voltage Trim ±10% VO,NOM
Enable TTL compatible
(Positive or Negative Logic)
Safety
UL, cUL 60950-1 Recognized
TUV EN60950-1 Licensed
Total Power: 66 Watts
Input Voltages: 48V
No. of Outputs: Single
Astec Industry Standard
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
3
www.astecpower.com
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 Voltage Output Voltage Output Current Efficiency2Model Number
36V to 75V 12.0V 4A 93.0% A (X)O04B48 (N) - (6)(S)(L)
36V to 75V 5.0V 12A 92.0% A (X)O12A48 (N) - (6)(S)(L)
36V to 75V 3.3V 20A 91.0% A (X)O20F48 (N) - (6)(S)(L)
36V to 75V 2.5V 20A 90.0% A (X)O20G48 (N) - (6)(S)(L)
36V to 75V 1.8V 25A 88.5% A (X)O25Y48 (N) - (6)(S)(L)
36V to 75V 1.5V 25A 86.5% A (X)O25M48(N) - (6)(S)(L)
36V to 75V 1.2V 25A 85.5% A (X)O25K48 (N) - (6)(S)(L)
OPTIONS:
(X) : “L” = Open Frame / Low Profile
“E” = Baseplate Construction
(N) : "N" = designates Negative Logic Enable (default is Positive Enable with no suffix “N” required)
(6) : “-6” = 3.7mm nominal pin length (default is 5mm nominal pin length with no suffix “-6” required)
(S) : “-S”= Surface Mount Termination (default is Through Hole Termination with no suffix “-S” required)7
(L) : “L” = RoHS compliant (RoHS 6) / “Blank” - RoHS compliant with Lead (PB) in solder exemption (RoHS 5)
Single Output
1. +Vin
2. Enable (On/Off)
3. -Vin
4. -VOUT
5. -Sense
6. Trim
7. +Sense
8. +VOUT
Notes:
1. Measured at 20 MHz bandwidth with external 10 µF
tant. capacitor in parallel with 0.1 µF ceramic
capacitor connected across +Vout and -Vout; 220 µF
e-cap or equivalent connected across +Vin and -Vin.
2. Efficiency measurements taken at full load, nominal
line and TA= 25°C.
3. All specifications are typical at nominal line, full load
and TA= 25°C unless otherwise noted.
4. All specifications subject to change without notice.
5. Mechanical drawings are for reference only.
Dimensions are in inches [mm]. Pin placement
tolerance ± 0.005 [0.127]. Mechanical Tolerance ±
0.02 [0.5], recommended surface mount pads (min:
0.080 x 0.112 [2.03 x 2.84] / max: 0092 x 0.124 [2.34
x 3.15]); through hole pin diameter (Pins 4 & 8) ∅ =
0.062 [1.57], others ∅ = 0.04 [1.0] (6X).
6. Technical Reference Notes should be consulted for
detailed information when available.
7. AEOxxxxxx-Sx series (surface mount terminated with
baseplate) are not reflow compatible.
8. Warranty 2 yrs.
Astec Industry Standard
AEO / ALO25
Pin Assignment
Astec reserves the right to make changes to the information
contained herein without notice and assumes no liability as a
result of its use and application. (REV 02: MARCH 7, 2007).
0.75
[19.1]
2.19
[55.5]
0.15
[3.8]
0.30
[7.6]
0.45
[11.4] 0.60
[15.2] 0.75
[19.1]
0.15
[3.8]
0.45
[11.4]
0.31
[7.9]
0.15
[3.9]
0.32
[8.2]
0.15
[3.8] 0.30
[7.6]
0.45
[11.4] 0.60
[15.2] 0.75
[19.0]
0.15
[3.8]
0.45
[11.4]
0.75
[19.0]
2.00
[50.8]
0.40
[10.1]
0.23
[5.8]
PIN SIDE DOWN
0.39
[9.8]
0.15
[3.9]
ALO - OPENFRAME
SMT - Termination
AEO -BASEPLATE
SMT - Termination
TH - Termination
TH - Termination
See A
PIN LENGTH A
Std Pin Length: 0.189 [4.8] MIN
0.205 [5.2] MAX
“-6” Option: 0.137 [3.5] MIN
0.152 [3.9] MAX
See A
PIN 1 PIN 8
