Details, datasheet, quote on part number: UNR-1.5/10-D3SM
CategoryPower Management => DC-DC Converters
DescriptionDC/DC Power Converters
CompanyDatel, Inc.
DatasheetDownload UNR-1.5/10-D3SM datasheet
Find where to buy


Features, Applications


3.0-3.6V input range; Non-isolated or 2.5V output x 1" through-hole or SMT package Gull-wing leads/standard reflow for SMT Full synchronous-rectifier topology 300kHz switching; Planar magnetics High efficiency, to 89% Low noise, 80mVp-p Quick transient response, 25sec VOUT user-trimmable from to +50/55C ambient operation with no derating Remote on/off control; Output overcurrent detection IEC950/EN60950/UL1950 pending EMC compliant

If your DSP and CPLD core logic are demanding more or 2.5V current from your 3.3V system, don't pay to derive more isolated power from your intermediate dc bus. DATEL's new, 3.3V-input, UNR "D3" models derive 10 Amps of low-voltage current right from your 3.3V supply. These non-isolated power converters exploit full synchronous rectification, planar magnetics, and 100% automated assembly to deliver high efficiencies (to 89%), low noise (typically 80mVp-p), and low costs. Housed x 2" shielded metal cases, UNR D3's offer standard through-hole ("T" models) or SMT ("SM" models) packaging. The new "gull-wing" SMT packages (with metal shells and non-conductive plastic baseplates) weigh less than 40 grams and can withstand peak temperatures to +235C. They are compatible with most contemporary pick-and-place and solder-reflow processes. These versatile DC/DC's are fully line (0.1% max.) and load (0.5% max.) regulated. They feature quick transient response (25sec), user-optional on/off control (for power sequencing), and output overcurrent detection and shutdown ("hiccup" technique with auto-recovery). Their impressive guaranteed efficiencies enable them to deliver fully rated output power from to +50/55C (ambient) without supplemental cooling. If your high current requirements have made the use of inefficient linear regulators impractical, take a look at one of DATEL's new switching buck regulators. Their high efficiency, ease-of-use, long-term reliability, and overall cost effectiveness will impress you. Safety agency approvals and EMC characterizations are currently in progress.

DATEL, Inc., Mansfield, MA 02048 (USA) Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 Email: Internet:

Typical = +25C under nominal line voltage and full-load conditions, unless otherwise noted. All models are tested and specified with an external 470F input capacitor with a 20m ESR and a 6Arms ripple-current rating, as well a 22F output capacitor with a 200m ESR. See I/O Filtering and Noise Reduction for more details.

Ripple/Noise (R/N) is tested/specified over a 20MHz bandwidth. Output noise may be further reduced by installing additional external output caps. See I/O Filtering and Noise Reduction. These devices have no minimum-load requirements and will regulate under no-load conditions. Nominal line voltage, no-load/full-load conditions.


I/O Connections Pin Function P23 Logic Ground On/Off Control +Output Trim Output Return Input Return +Input No Pin No Pin Function P25 Logic Ground On/Off Control N.C. +Output Trim Output Return Input Return +Input

Output Configuration: U = Unipolar Non-Isolated Nominal Output Voltage: or 2.5 Volts Packaging: T = Through-Hole Package SM = Surface-Mount Package Input Voltage Range: to 3.6 Volts (3.3V nominal)

See Temperature Derating section in Technical Notes for more details.
Typical = +25C under nominal line voltage and full-load conditions unless noted.

Input Voltage Range Input Current: Normal Operating Conditions Standby/Off Mode Output Short Circuited Input Ripple Current: UNR-1.8/10-D3 UNR-2.5/10-D3 Input Filter Type Overvoltage Protection Reverse-Polarity Protection On/Off Control to 3.6 Volts (3.3V nominal) See Ordering Guide 3.6mA typical, 8mA maximum 500mA typical, 700mA maximum 150mAp-p 50mAp-p Capacitive None On = open 2V to +VIN; IIN = 800A max. Off = 0-0.8V; IIN = 1.2mA max.

All models are tested and specified with an external 470F input capacitor with a 20m ESR and a 6Arms ripple-current rating, as well a 22F output capacitor with a 200m ESR. See I/O Filtering and Noise Reduction for more details. These devices have no minimum-load requirements and will regulate under no-load conditions. Listed specifications apply for both "T" and "SM" models as appropriate. See Output Overcurrent Detection for details. See On/Off Control for details. See Output Voltage Trimming for details. For all models, output noise can be further reduced with the installation of additional external output capacitors. See I/O Filtering and Noise Reduction for details. Output overcurrent detection initiates at approximately 40% above rated load (14 Amps). Under overload or short-circuit conditions, output current "hiccups" at approximately 1 Amp average and remains at that level until the overload is removed. See Output Overcurrent Detection. See Start-Up Time for details. See Temperature Derating for details.

Input Voltage: Continuous Transient (100msec) Input Reverse-Polarity Protection Input/Output Overvoltage Protection Output Current

5 Volts 6.3 Volts None Current limited. Devices can withstand a sustained output short circuit without damage. +105C +300C

VOUT Accuracy (50% load): UNR-1.8/10-D3 UNR-2.5/10-D3 VOUT Trim Range Trim pin tied to +Output: UNR-1.8/10-D3 UNR-2.5/10-D3 Trim pin tied to Output Return Temperature Coefficient Ripple/Noise (20MHz BW) Line/Load Regulation Efficiency Overcurrent Protection: Technique Overcurrent Detection Point Average Output Current Transient Response (50%-75% step) Start-Up Time: VIN to VOUT On/Off to VOUT Switching Frequency Operating Temperature (Ambient): Without Derating With Derating Storage Temperature Dimensions: Through-Hole Models Surface-Mount Models Shielding Case Connection Case Material 1% (15mV) maximum 1% (18mV) maximum 1% (25mV) maximum

Storage Temperature Lead Temperature (Soldering, 10 sec.) VOUT = 1.28 Volts or less VOUT = 1.52 Volts or less VOUT = 3.0 Volts or greater 0.02% per C See Ordering Guide See Ordering Guide See Ordering Guide "Hiccup" with auto-recovery 140% of rated current 1 Amp typical, 3 Amps maximum 2.5% of final value 25/30msec (1.8/2.5VOUT models) 25/30msec (1.8/2.5VOUT models) 300kHz (30kHz)

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.

Return Current Paths These are non-isolated DC/DC converters. The Input Return, Output Return and Logic Ground pins are all connected together internally. To the extent possible, all input and load currents should be returned through the Input Return and Output Return, respectively (via low-impedance runs). Any control signals applied to the On/Off Control pin should be referenced to Logic Ground. The internal trace leading to Logic Ground is not designed to carry high current. Consequently, devices should never be installed in a manner that results in high current flow through Logic Ground (i.e., the Input/Output Return pins should never be left open or connected via high-impedance paths).

10.9mm) 5 sided Input/Output Return Corrosion-resistant steel with non-conductive,epoxy-based,black enamelfinishandplasticbaseplate Copper, tin plated 1.4 ounces (39.7 grams)

All UNR 15-25W Series converters are tested and specified with external 470F input capacitors (20m ESR, 6Arms ripple-current rating) and external 22F output capacitors (200m ESR). External input capacitance is required and must be rated to handle the input ripple current as follows:

In critical applications, input/output ripple/noise may be further reduced by installing additional I/O caps.


Related products with the same datasheet
Some Part number from the same manufacture Datel, Inc.
UNR-1.5/10-D3T DC/DC Power Converters
UNR-2.5/12-D5 Single Output Unr Series Non-isolated, 5v-to-2.5v 12 Amp, DC/DC Converters
UNR-2.5/15-D5 DC/DC Power Converters
UNR-3.3/10-D5 Single Output Unr Series Non-isolated, 5v-to-3.3v 8 And 10 Amp, DC/DC Converters
UNR-3.3/10-D5SM DC/DC Power Converters
UNR-3.3/12-D5 Non-isolated, 5v-to-3.3v 12 Amp, DC/DC Converters
UNR-3.3/12000-D5 3.3V Non-isolated, 8-40W, Single Output DC/DC Converter
UNR-3.3/15-D5 DC/DC Power Converters
UNR-3.3/2500-D12 3.3V Non-isolated, 8-40W, Single Output DC/DC Converter
UNR-3.3/3-D12 DC/DC Power Converters
UNR-3.3/3000-D5 3.3V Non-isolated, 8-40W, Single Output DC/DC Converter
Same catergory

KA3842AN : Linear Integrated Circuit ( Current-mode PWM Controller ). The KA3842A KA3842AM are fixe frequency current-mode PWM controller. They are specially designed for OFF-Line and DC-to-DC converter applications with minimal external components. These integrated circuits feature a trimmed oscillator for precise duty cycle control, a temperature compensated reference, high gain error amplifier, current sensing comparator,.

MAX1837EVKIT : MAX1837EVKIT Evaluation Kit For The MAX1836/MAX1837. The MAX1837 evaluation kit (EV kit) is a fully assembled and tested surface-mount circuit board that demonstrates the performance of the MAX1837 step-down DC-DC converter. The EV kit provides a +3.3V output from to +24.0V input and can deliver 250mA of load current. The EV kit circuit includes the MAX1837EUT33 DC-DC converter, which is preset to regulate.

MIC5219 : MIC5219 500mA-Peak Output LDO Regulator. The is an efficient linear voltage regulator with high peak output current capability, very low dropout voltage, and better than 1% output voltage accuracy. Dropout is typically 10mV at light loads and less than 500mV at full load. The MIC5219 is designed to provide a peak output current for startup conditions where higher inrush current is demanded.

PMA4218GSF : DC/DC regulator. Surface Mount Regulator With Exceptional Thermal Performance.

PT3304A : Plug-in Power Solutions->Non-Isolated->Single Posi. ti PT3304, 15Vout 30W 20 to 60V-Input Non-isolated Step-down Isr.

RSO-0505 : Regulated DC/DC. Power = 1 ;; ISOlation = 1 ;; Input Voltages (VDC) = 5-9, 9-18, 18-36, 36-72 ;; Output Voltages = 5, 9, 12, 15 ;; No. Of Outputs = S ;; Case = SIP8.

SKIIP602GH : Skiippack a SK Integrated Intelligent Power Pack Single Phase. Symbol Visol 4) Top ,Tstg Conditions AC, 1min Operating / stor. temperature IGBT and Inverse Diode VCES VCC 5) Operating DC link voltage IC IGBT Tj 3) IGBT + Diode IF Diode IFM Diode, 1 ms IFSM Diode, = 150 C, 10ms; sin I2t (Diode) Diode, = 150 C, 10ms Driver VS1 Stabilized Power Supply VS2 Non-stabilized Power Supply fsmax Switching frequency dV/dt.

TC1107 : The TC1107 is a Fixed Output, High Accuracy (typically ±0. Extremely Low Supply Current (50A, Typ.) Very Low Dropout Voltage 300mA Output Current High Output Voltage Accuracy Standard or Custom Output Voltages Power Saving Shutdown Mode Bypass Input for Ultra Quiet Operation Over Current and Over Temperature Protection Space-Saving MSOP Package Option The is a fixed output, high accuracy (typically 0.5%).


TPS2490DGS : External FET. ti TPS2490, Positive High-voltage Power-limiting Hot Swap Controller.

TPS79401DCQ : ti TPS79401, Ultra-low Noise, High Psrr, Fast RF, High-Enable, 250-mA Low Dropout Regulator.

AP1603 : The AP1603 is a high efficiency step-up DC/DC converter for applications using 1 to 2 NiMH battery cells. Only three external components are required to deliver a fixed output voltage of 3.3V. The AP1603 starts up from less than 0.9V input with 1mA load. Pulse Frequency Modulation scheme brings optimized performance for applications with light output.

LTC3554 : Micropower USB Power Manager With Li-Ion Charger And Two Step-Down Regulators The LTC3554 is a micropower, highly integrated power management and battery charger IC for single-cell Li-Ion/Polymer battery applications. It includes a PowerPath manager with automatic load prioritization, a battery charger, an ideal diode and numerous internal protection.

LTC4266A : Quad PoE/PoE+/LTPoE++ PSE Controller The LTC4266A is a quad Power Sourcing Equipment (PSE) controller capable of delivering up to 90W of LTPoE++ power to a compatible LTPoE++ Powered Device (PD). A proprietary detection/classification scheme allows mutual identification between a LTPoE++ PSE and LTPoE++ PD while remaining compatible and interoperable.

PT7M7345ZTA : P Supervisor Circuits The PT7M7xxx family microprocessor (P) supervisory circuits are targeted to improve reliability and accuracy of power-supply circuitry in P systems. These devices reduce the complexity and number of components required to monitor power-supply and battery functions..

LTC3867 : Synchronous Step-Down DC/DC Controller With Differential Remote Sense And Nonlinear Control The LTC3867 is a current mode synchronous step-down switching regulator controller that drives all N-channel power MOSFET stages. Output voltage transient excursions are minimized by use of a nonlinear control architecture to eliminate clock latency issues.

STC3105 : Battery Monitor IC With Alarm Output For Gas Gauge Applications The STC3105 battery monitor includes the hardware functions required to implement a low-cost gas gauge for battery monitoring. The STC3105 uses accurate measurements of the battery voltage to estimate a batteryEUR(TM)s state-of-charge (SOC). It uses a low cost sense resistor to precisely.

TPS799125 : Single Output LDO, 200mA, Fixed (1.25V), Low Quiescent Current, Low Noise, High PSRR The TPS799xx family of low-dropout (LDO) low-power linear regulators offer excellent AC performance with very low ground current. High power-supply rejection ratio (PSRR), low noise, fast start-up, and excellent line and load transient response are provided while consuming.

0-C     D-L     M-R     S-Z