Datasheet

UCQ-1.2/30-D48 UCQ-1.5/25-D48 UCQ-1.5/40-D48 UCQ-1.8/30-D48 UCQ-1.8/40-D48
Input
Input voltage range See ordering guide.
Start-up threshold, Volts 34 34 34 34 34
Undervoltage
shutdown, V
33 32 32.5 32.5 32
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
1.23 1.26 1.96 1.74 2.30
Standby mode, mA
(Off, UV, OT shutdown)
1-10, model dependent
Internal input filter type Pi-type L-C Pi-type Pi-type Pi-type
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.
±10% −20 + 10 ±10% ±10% ±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
1,000 10,000 10,000 4,700 10,000
FUNCTIONAL SPECIFICATIONS
➀ Specs are typical unless noted.
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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 3 of 24