UWR-12/1250-D48A-C 查看數據表（PDF） - Murata Manufacturing
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UWR-12/1250-D48A-C Datasheet PDF : 13 Pages
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Performance/Functional Specifications
Typical @ TA = +25°C under nominal line voltage and full-load conditions, unless noted. ➀ ➁
Input
Input Voltage Range:
D12A Models
D24A Models
D48A Models
Overvoltage Shutdown:
D12A Models
D24A Models
D48A Models
10-18 Volts (12V nominal)
18-36 Volts (24V nominal)
36-75 Volts (48V nominal)
18.5-21 Volts (20V typical)
37-41 Volts (38V typical)
77-81 Volts (78.5V typical)
Start-Up Threshold: ➂
D12A Models
D24A Models
D48A Models
9.4-10 Volts (9.6V typical)
16.5-18 Volts (17V typical)
34-36 Volts (35V typical)
Undervoltage Shutdown: ➂
D12A Models
D24A Models
D48A Models
Input Current:
Normal Operating Conditions
Standby Mode (Off, OV, UV)
7-8.5 Volts (8V typical)
15.5-17.5 Volts (16.5V typical)
32.5-35.5 Volts (34V typical)
See Ordering Guide
5mA
Input Filter Type
Pi
Reverse-Polarity Protection
Brief duration, 10A maximum
On/Off Control (Optional, Pin 3): ➃ ➄
D12AC, D24AC, & D48AC Models
D12AN, D24AN, & D48AN Models
On = open or 13V to +VIN, IIN = 1-5mA typ.
Off = 0-0.8V, IIN = 3-12mA typ.
On = 0-0.8V, IIN = 3-12mA typ.
Off = open or 3.3-5.5V, IIN = 1-5mA typ.
Output
VOUT Accuracy (50% load):
±1.5% (±2% for model UWR-1.2/6000)
Minimum Loading for Specification: ➁
1.2V/1.5V/1.8V/2.5V/3.3V/5V Outputs No load
12V/15V Outputs
10% of IOUT max.
Minimum Loading for Stability: ➁
1.2V/1.5V/1.8V/2.5V/3.3V/5V Outputs No load
12V/15V Outputs
25mA
Ripple/Noise (20MHz BW) ➀ ➅
See Ordering Guide
Line/Load Regulation
See Ordering Guide
Efficiency
See Ordering Guide
Isolation Voltage:
Input-to-Output
1500Vdc minimum (functional)
Isolation Capacitance
470pF
Isolation Resistance
Current Limiting:
1.2V-5V Outputs
12V and 15V Outputs
100MΩ
Hiccup technique, auto-recovery
Power-limiting technique, auto-recovery
Overvoltage Protection
Temperature Coefficient
Zener/transorb clamp, magnetic feedback
±0.04% per °C
Dynamic Characteristics
Transient Response (50% load step)
1.2V-2.5V models
3.3V-15V models
200µsec max. to ±2% of final value
200µsec max. to ±1.5% of final value
Start-Up Time: ➂
VIN to VOUT
On/Off to VOUT
50msec
30msec
www.murata-ps.com/support
UWR Models
Single Output, High-Density,
6 Amp/15 Watt DC/DC Converters
Dynamic Characteristics (continued)
Switching Frequency
1.2V models
1.5V D48 models
1.8V D12 models
1.8V D24 models
1.8V D48 models
2.5 and 1.5 D12/D24 models
3.3-12V models
250-300kHz ±30kHz, model dependent
260kHz (±30kHz)
280kHz (±30kHz)
250kHz (±30kHz)
210kHz (±20kHz)
340kHz (±40kHz)
310-345kHz ±10%, model dependent
Environmental
Operating Temperature (Ambient):
(See Derating Curves)
–40 to +85°C with Derating
Case Temperature:
Maximum Allowable
+100°C
Storage Temperature
–40 to +105°C
Dimensions
Shielding
Case Material
Pin Material
Weight
Physical
2" x 1" x 0.475" (51 x 25 x 12.1mm)
None
Diallyl phthalate, UL94V-0 rated
Gold-plated copper alloy with nickel underplate
1.4 ounces (39.7 grams)
➀ All models are specified with two external 0.47µF multi-layer ceramic capacitors installed across
their output pins.
➁ See Minimum Output Loading Requirements under Technical Notes.
➂ See Technical Notes for details.
➃ The On/Off Control and Trim functions are optional and must be installed by MPS. See Optional
Functions or contact MPS for details.
➄ The On/Off Control is designed to be driven with open-collector logic or the application of appro-
priate voltages (referenced to –Input, pin 2). Applying a voltage to the On/Off Control pin when
no input voltage is applied to the converter may cause permanent damage. See Technical Notes.
➅ Output noise maybe further reduced with the addition of additional external output capacitors.
See Technical Notes.
➆ Operating temperature range without derating is model and input-voltage dependent. See
Temperature Derating.
➇ RoHS-6 hazardous substance compliance does not claim EU RoHS exemption 7b (lead in solder).
Absolute Maximum Ratings
Input Voltage:
Continuous:
D12 Models
D24 Models
D48 Models
Transient (100msec):
D12 Models
D24 Models
D48 Models
22 Volts
44 Volts
88 Volts
50 Volts
50 Volts
100 Volts
Input Reverse-Polarity Protection
Current must be <10 Amps. Brief duration
only. Fusing recommended.
Output Overvoltage Protection:
1.2V/1.5/1.8V Outputs
2.5V/3.3V Outputs
5V/12V/15V Outputs
2.1/2.2/2.3 Volts, unlimited duration
TBD/3.4/4.4 Volts, unlimited duration
7.1/16/18 Volts, unlimited duration
Output Current
Current limited. Devices can withstand sus-
tained output short circuits without damage.
Case Temperature
+100°C
Storage Temperature
–40 to +105°C
Lead Temperature
See soldering guidelines
These are stress ratings. Exposure of devices to greater than any of these conditions may
adversely affect long-term reliability. Proper operation under conditions other than those
listed in the Performance/Functional Specifications Table is not implied.
MDC_UWR_7-15.I03 Page 3 of 13
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