UNR-1.8/2-D12SM 데이터 시트보기 (PDF) - Murata Power Solutions
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UNR-1.8/2-D12SM Datasheet PDF : 8 Pages
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UNR Series
Single Output, Non-Isolated, 1.8/2.5/3.3VOUT 3.6-10W DC/DC Converters
PERFORMANCE SPECIFICATIONS AND ORDERING GUIDE
Output
Part Number ➅
Vout (V)
Iout
(A)
Power R/N (mVp-p) ➁
(W) Typ. Max.
Regulation (Max.)
VIN Nom.
Line Load ➂ (V)
Input
Range
(V)
IIN ➃
(mA/A)
Efficiency
Min. Typ.
Package
(Case
Pinout)
UNR-1.8/2-D5
1.8
2
3.6
35
50 ±0.35% ±0.5%
5
4.75-5.5 30/0.91 77% 79%
UNR-1.8/2-D5SM
1.8
2
3.6
35
50 ±0.35% ±0.5%
5
4.75-5.5 30/0.91 77% 79%
UNR-2.5/2-D5
2.5
2
5
40
80 ±0.1% ±0.5%
5
4.75-5.5 200/5.62 85% 89%
UNR-2.5/2-D5SM
2.5
2
5
40
80 ±0.1% ±0.5%
5
4.75-5.5 200/5.62 85% 89%
UNR-3.3/3-D5
3.3
3
9.9
40
75 ±0.4% ±0.5%
5
4.75-5.5 40/2.25 86% 88%
UNR-3.3/3-D5SM
3.3
3
9.9
40
75 ±0.4% ±0.5%
5
4.75-5.5 40/2.25 86% 88%
UNR-3.3/3-D12 ➁
3.3
3
9.9
100 150 ±0.25% ±0.5%
12 10.8-13.6 40/0.93 87% 89%
UNR-3.3/3-D12SM ➁
3.3
3
9.9
100 150 ±0.25% ±0.5%
12 10.8-13.6 40/0.93 87% 89%
C7A, P9
C17, P24
C7A, P9
C17, P24
C7A, P9
C17, P24
C7A, P9
C17, P24
➀ Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise noted.
The UNR-1.8/2-D5 and D5SM models require an external 15k pull-up resistor between +Input
and On/Off Control for normal operation. See On/Off Control for details.
➁ Ripple/Noise (R/N) measured over a 20MHz bandwidth. The UNR-3.3/3-D12 and D12SM models
are specified with an external 22µF input capacitor. All other models are specified with no external
I/O capacitors. Output noise on the D12 models can be reduced significantly with the addition of
external output capacitors. See I/O Filtering.
➂ D5/D5SM models require a minimum 300mA load current to maintain regulation. D12/D12SM
models have no mimimum load requirement. Listed specs apply from 300mA to full load for D5/
D5SM models and from no load to full load for D12/D12SM models.
➃ Nominal line voltage, no-load/full-load conditions.
➄ D5/D5SM models may experience start-up problems if voltages greater than 1.0V (for 3.3V models)
or 1.2V (for 1.8/2.5V models) are present across the output pins during power-up.
➅ These are only partial part numbers. Refer to the part number structure when ordering.
PART NUMBER STRUCTURE
U NR - 2.5 / 2 - D5 SM - C
Output Configuration:
U = Unipolar
Non-Isolated
Nominal Output Voltage:
1.8, 2.5 or 3.3 Volts
Maximum Output Current
in Amps
RoHS-6 compliant
(Does not claim EU RoHS
exemption 7b, lead in solder)
Surface-Mount Packaging
Input Voltage Range:
D5 = 4.75-5.5 Volts (5V nominal)
D12 = 10.8-13.6 Volts (12V nominal)
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MDC_UNR 3.6-10W.C01 Page 2 of 8
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