UNR-3.3/12-D5-C Murata Power Solutions Inc, UNR-3.3/12-D5-C Datasheet - Page 2

• Manufacturer Part Number: UNR-3.3/12-D5-C
• Description: DC/DC Converter
• Manufacturer: Murata Power Solutions Inc
• Series: UNRr

Specifications of UNR-3.3/12-D5-C

• Dc / Dc Converter O/p Type: Fixed
• No. Of Outputs: 1
• Input Voltage: 4.75V To 5.5V
• Power Rating: 40W
• Output Voltage: 3.3V
• Output Current: 12A
• Supply Voltage: 5V
• Dc / Dc Converter Case Style: DIP
• Product: Non-Isolated / POL
• Output Power: 40 W
• Input Voltage Range: 4.75 V to 5.5 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 3.3 V
• Output Current (channel 1): 12 A
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

www.murata-ps.com
Performance/Functional Specifications
Typical @ T
 These devices have no minimum load requirements and will regulate under no-load conditions.
 Achieving specified performance requires the installation of an external 470µF input capacitor
 No-load/full-load conditions. When the unit is off, the input "standby" current is typically 10mA.
 See On/Off Control Functionality.
 Output noise may be reduced by installing additional external capacitors across the output
 Overcurrent detection initiates at approximately 30% above rated load, where the output
Input Voltage Range
Input Current 
Input Filter Type
Overvoltage Protection
Reverse-Polarity Protection
On/Off Control (Pin 2) 
V
Temperature Coefficient
Ripple/Noise (20MHz BW) 
Line/Load Regulation
Efficiency
Overcurrent Detection Point 
Transient Response (50% load step)
Switching Frequency
Operating Temperature (Ambient):
Storage Temperature
Dimensions
Shielding
Case Connection
Case Material
Pin Material
Weight
OUT
with an ESR of 20mΩ and an rms ripple current rating of 6 Amps, as well as an external 22µF
output capacitor with an ESR of 200mΩ or less.
terminals. Caps should be selected for low ESR (typically 60mW) and located as close to the
unit as possible.
current "hiccups" at an overage current of 1A and remains there until the short is removed.
Without Derating
With Derating
Accuracy (50% load)
A
= +25°C under nominal line voltage and full-load conditions unless noted.
Dynamic Characteristics
Environmental
Physical
Output
Input
4.75-5.5 Volts (5V nominal)
0.15/6.9 Amps
Capacitive
None
None
TTL high (or open) = on, low = off
±1% (±25mV) maximum
±0.02% per °C
40mVp-p typical, 80mVp-p maximum
±0.1% maximum/±0.5% maximum
87% typical, 84% minimum
Auto-recovery
30µsec to ±1% of final value
200kHz (±20kHz)
–40 to +50°C
to +100°C (Straight line to 0 Watts)
–40 to +105°C
2" x 1" x 0.44" (51 x 25 x 11.2mm)
5-sided
Pin 5 (Input Return)
Corrosion resistant steel with
non-conductive, epoxy-based, black
enamel finish and plastic baseplate
Tin over copper alloy
1.6 ounces (45.4 grams)
 
2
The On/Off Control pin has an internal 5kΩ pull-up resistor to +V
be driven with any logic circuit capable of meeting the following drive require-
ments. Logic "0" = 0 to +0.8V. Logic "1" = +2.0V to +V
–0.7mA. I
transistor can be used. The drive circuit should be rated for more than 5.5V.
Applying a voltage to pin 2 when no input power is applied to the converter can
cause permanent damage to the converter.
On/Off Control Functionality
M E C H A N I C A L S P E C I F I C A T I O N S
O R D E R I N G I N F O R M A T I O N
UNR-2.5/12-D5
These are stress ratings. Exposure of devices to 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.
Input Voltage
Output Current
Storage Temperature
Lead Temperature (soldering, 10 sec.)
Single Output, Non-Isolated, 5V-to-2.5V
(11.18)
(20.32)
0.44
0.800
withstand a sustained output short
IL
0.20 MIN
(5.08)
(@V
0.300
(7.62)
(2.54)
0.10
IN
= 0V) = –1.1mA. Open collector logic or a single NPN drive
Pin
Technical enquiries email: [e-mail], tel:
1
2
3
4
5
6
1
2
DIMENSIONS ARE IN INCHES (MM)
Non-Isolated, 5V-to-2.5V, 30 Watt, DC/DC Converter, non-RoHS.
I/O Connections
Absolute Maximum Ratings
On/Off Control
Output Return
Logic Ground
Function P9
Input Return
12 Amp, DC/DC Converters
BOTTOM VIEW
+Output
Case C5B
+Input
(50.80)
(45.72)
1.800
2.00
7 Volts
Current limited. Devices can
–40 to +105°C
+300°C
Note:
The case is connected to
pin 5 (Input Return).
3
4
5
6
circuit without damage.
UNR SERIES
IN
(5.08)
0.200
. I
IH
UNR30-40W.B01 Page 2 of 4
PINS 1-2: 0.040 ±0.002
PINS 3-6: 0.062 ±0.002
(2.54)
(@V
0.10
INSULATED BASE
(10.16)
0.400
METAL CASE
IN
IN
= +2.0V) =
(25.40)
. It can
(1.016 ±0.051)
(1.575 ±0.051)
1.00
[phone]