Datasheet

➀ Specs are typical unless noted.
FUNCTIONAL SPECIFICATIONS
UCQ-2.5/40-D24 UCQ-2.5/30-D48 UCQ-3.3/35-D24 UCQ-3.3/20-D48 UCQ-3.3/30-D48
Input
Input voltage range See ordering guide.
Start-up threshold, Volts 16.8 34 17 35 35
Undervoltage
shutdown, V
15 32 15 34 34
Overvoltage shutdown none
Reflected (back) ripple
current, mA pk-pk
10-30, model dependent
Input Current
Full load conditions See ordering guide.
Inrush transient, A
2
sec 0.05
Output short circuit, mA 50-200, model dependent
Low line (Vin = min.),
Amps
6.69 2.39 7.21 2.04 3.02
Standby mode, mA
(Off, UV, OT shutdown)
1-10, model dependent
Internal input filter type Pi L-C L-C Pi Pi
Reverse polarity
protection
None, install external fuse.
Remote On/Off Control
Positive logic
(P model suffix)
OFF = Ground pin to +0.8V
ON = Open or +3.5 to +13.5V max
Negative logic
(N model suffix)
OFF = Open or +3.5 to +13.5V
ON = Ground pin to +0.8V max
Current, mA 1
Output
Voltage output range See ordering guide.
Voltage output accuracy ±1% of Vnom., (50% load)
Adjustment range,
% of Vnom.
−20 + 10 −20 + 10 ±10% −10 to + 10%
Temperature coefficient ±0.02% of Vout range per °C
Minimum loading No minimum loading.
Remote sense
compensation
+10%
Ripple/noise
(20 MHz bandwidth)
See ordering guide.
Line/Load regulation See ordering guide.
Efficiency See ordering guide.
Maximum capacitive
loading, µF low ESR
<0.02Ω max.,
resistive load
10,000 10,000 10,000 10,000 10,000
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Single Output UCQ Models
Low-Profile, Quarter Brick, 8.3-40 Amp
Isolated DC-DC Converters
MDC_UCQ Models.E02 Page 4 of 24