Total Power:
25 Watts
Input Voltages: 24V or 48V
No. of Outputs: Single, Dual, Triple
25 Watts
AA25N
Electrical Specs
Input
Input range
18-36 Vdc (24 Vdc nominal)
36 - 75Vdc (48Vdc nominal)
2mF typical
Input capacitance
Input reverse voltage
protection
Fuse recommended
Input surge voltage
100V for 100mS (048L)
50V for 100mS (024L)
36V for 100mS (012L)
Input reflected ripple
Undervoltage lockout
Efficiency
<10mA (P-P)
Vin<32V (-048L ONLY)
82% typical
See Note 2
Output
Voltage tolerance
Main Output
1.0%
Special Features
Aux Output 3.0%
Dual Output 2.0%
Main Output
Aux Output 0.5%
Dual Output 0.2%
Main Output
Aux Output 3.0%
Dual Output 0.5%
(10% to 100% load) Note 6.
50mV P-P, Singles
• 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)
Line regulation
Load regulation
0.1%
0.75%
Noise/ripple
• Thermal protection
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 Switching frequency
• Under voltage lockout
Short circuit protection
Overvoltage protection
Transient response
Temperature coefficient
Switching frequency
Environmental
350kHz
Control
Enable
on =2.5 to 5.5Vdc or open circuit
off = 0 to 0.8Vdc
Ref. to -Vin. TTL compatible
Operation case temperature range: -40°C to
+100°C
Storage temperature: -40°C to +125°C
Humidity: 5% to 100%
Input current (enable OFF) <10ma
Output trim
Thermal shutdown
Single output models
110°C Baseplate temperature (typ)
Auto reset
Isolation
I/O isolation
1500Vdc
Safety
Isolation resistance
15 x 108 ohms
UL
UL1950
CAN
TUV
CAN22.2-950
EN60950
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Europe (UK): 44 (1384) 842-211
Asia (HK): 852-2437-9662
70
ASTEC [ Astec America, Inc ]
