UQQ-12 Datasheet, PDF (5/18 Pages) Murata Manufacturing Co., Ltd. – Wide Input Range Single Output DC-DC Converters

UQQ Series
Wide Input Range Single Output DC-DC Converters
FUNCTIONAL SPECIFICATIONS (CONTINUED)
UQQ-3.3/25-Q12 UQQ-3.3/25-Q48 UQQ-5/17-Q12 UQQ-5/20-Q48 UQQ-12/8-Q12 UQQ-12/8-Q48 UQQ-15/7-Q12 UQQ-24/4-Q12
DYNAMIC CHARACTERISTICS
Dynamic Load Response
(50-75-50% load step)
50μsec to ±1% 100μsec to ±1%
of final value of final value
50μsec to ±1%
of final value
95μsec to ±1% 50μsec to ±1% 50μsec to ±2%
of final value of final value of final value
Start-up Time
VIN to VOUT regulated
10msec
10msec max 10msec
25msec
10msec
20msec
10msec
10msec
Remote On/Off
to VOUT regulated
5msec
5msec max
5msec
Switching frequency
255 ±25kHz 255 ±25kHz 260 ±25kHz 225-265kHz 260 ±25kHz 245 ±20kHz 260 ±25kHz 260 ±25kHz
ENVIRONMENTAL
Calculated MTBF (4)
TBC
3,360,928
TBC
Operating Temperature Range
See Derating curves
–40 to +85ºC
with Derating
–40 to +57ºC
with Derating
–40 to +85ºC
with Derating
Operating Temperature Range –40 to +105ºC
with baseplate
(no Derating required) (3)(14)
–40 to +100ºC
–40 to +105°C –40 to +105ºC
–40 to +105°C –40 to +100°C –40 to +105°C –40 to +105°C
Storage Temperature Range
–55 to +125ºC
Thermal Protection/Shutdown
+120ºC, measured at thermistor T1
Relative humidity
To +85°C/85% non-condensing
PHYSICAL
Outline dimensions
See mechanical specifications
Baseplate material
Aluminum
Pin material
Copper alloy
Pin diameter
0.04/0.062 inches, 1.016/1.524 mm
Weight
1 ounce (28 grams)
Electromagnetic interference
(conducted, external filter
required)
Designed to meet class B, EN55022, CISPR22
Safety
Certified to UL/cUL 60950-1, CSA-C22.2 No.60950-1, IEC/EN 60950-1, 2nd Edition
Flammability
UL 94V-0
Specification Notes:
(1) All models are tested and specified with 300 lfm airflow, external 1 and 10μF paralleled ceramic/
tantalum output capacitors and a 100μF external input capacitor. All capacitors are low ESR
types. These capacitors are necessary to accommodate our test equipment and may not be
required in your applications. All models are stable and regulate within spec under no-load
conditions.
General conditions for Specifications are +25°C, VIN = nominal, VOUT = nominal, full load unless
noted.
(2) Input Ripple Current is tested and specified over a 5Hz to 20MHz bandwidth. Input filtering is
CIN = 33μF tantalum, CBUS = 220μF electrolytic, LBUS = 12μH.
(3) Note that Maximum Power Derating curves indicate an average current at nominal input voltage.
At higher temperatures and/or lower airflow, the DC-DC converter will tolerate brief full current
outputs if the total RMS current over time does not exceed the Derating curve. All Derating
curves are presented at sea level altitude. Be aware of reduced power dissipation with increas-
ing altitude.
(4) Mean Time Before Failure is calculated using the Telcordia (Belcore) SR-332 Method 1, Case 3,
ground fixed conditions, TPCBOARD = +25°C, full output load, natural air convection.
(5) The On/Off Control may be driven with external logic or by applying appropriate external voltages
which are referenced to Input Common. The On/Off Control Input should use either an open
collector/open drain transistor or logic gate.
(6) Short circuit shutdown begins when the output voltage degrades approximately 2% from the
selected setting.
(7) The outputs are not intended to sink appreciable reverse current.
(8) Output noise may be further reduced by adding an external filter. See I/O Filtering and Noise
Reduction.
(9) All models are fully operational and meet published specifications, including “cold start” at –40°C.
On-board component package temperatures must not exceed +128°C.
(10) Regulation specifications describe the deviation as the line input voltage or output load current is
varied from a nominal midpoint value to either extreme.
(11) Alternate pin length and/or other output voltages are available under special quantity order.
(12) Overvoltage shutdown on 48V input models can be eliminated under special quantity order. OV
shutdown can be deleted in order to comply with certain telecom reliability requirements. These
requirements attempt continued operation despite significant input overvoltage.
(13) Do not exceed maximum power specifications when adjusting the output trim.
(14) Note that the converter may operate up to +105°C with the baseplate installed (+100°C for the
UQQ-3.3/25-Q48). However, thermal self-protection occurs near +120°C Therefore, +105°C is
recommended to avoid thermal shutdown.
(15) If reverse polarity is accidentally applied to the input, to ensure reverse input protection, always
connect an external input fuse in series with the +VIN input. Use approximately twice the full
input current rating with nominal input voltage.
(16) For On/Off Control on negative-polarity UQQ-3.3/25-Q48N models, the maximum OFF mode
control voltage is +13.5 Volts. For the ON mode, the range is pin grounded to +1 Volt max.
(17) Always connect the sense pins. If they are not connected to a remote load, connect each sense
pin to its respective output at the converter pins.
(18) Shown at Vin = 10V; after module starts up it operates from 9-36Vdc.
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