(R) (R) NEW INNOVATION and EXCELLENCE 1.5, 1.8 & 2.5 Volt Models Single Output A-Series, UWR Models High-Density, 2" x 1" 1-6 Amp, 9-15 Watt DC/DC's A-SERIES Features 1.5/1.8/2.5VOUT models source 6 Amps 3.3VOUT models source 4.25 Amps 5/12/15VOUT models deliver full 15 Watts 310kHz synchronous-rectifier topologies Guaranteed efficiencies to 86% Choice of 3 input voltage ranges: 10-18V, 18-36V, 36-75V -40 to +60/70C ambient w/o derating Fully isolated (1500Vdc); I/O protected UL1950/EN60950 certified CE mark (75VIN models) Standard 2" x 1" packages and pinouts Optional VOUT trim, sync, on/off control Pin compatible with Lucent LC/LW Series The new 1.5V, 1.8V and 2.5V models in DATEL's flagship 9-15 Watt A-Series can source a continuous 6 Amps. This is the most "low-voltage" current available from a standard 1" x 2" package, and these power converters exemplify DATEL's relentless drive to bring you more power/current, from standard packages, without compromising reliability or resorting to thermal specmanship. By combining a high-frequency (310kHz), high-efficiency (to 88%), synchronousrectifier topology with the newest components and time-tested, fully automated, SMT-on-pcb construction, these UWR Models are able to bring you 9-15W (@ up to 6A) in the standard 2" x 1" package from which most competitors can only get 5-10W (@ 3-4A). All UWR's deliver their full output power over ambient temperature ranges from -40C to as high as +70C (model and input voltage dependent) without heat sinks or supplemental forced-air cooling. Devices derate to +100C. Output voltages are 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 Volts. Input voltage ranges are 10-18V ("D12" models), 18-36V ("D24" models) or 36-75V ("D48") models. All models feature input pi filters, input undervoltage and overvoltage lockout, input reverse-polarity protection, output overvoltage protection, output current limiting, and continuous short-circuit protection. On/off control, sync, and output-trim functions are optional (see Optional Functions). All models are certified to IEC950, UL1950 and EN60950 safety requirements for OPERATIONAL insulation. "D48" models (36-75V inputs) are CE marked. UWR 9-15W DC/DC's are packaged in low-cost, light-weight, diallyl phthalate (UL94V-0 rated) plastic packages with standoffs. EMC compliance is achieved via a low-noise design rather than through expensive metal shielding. +VOUT +VIN SWITCH CONTROL -VOUT -VIN PWM CONTROLLER ON/OFF CONTROL OR SYNC (OPTIONAL) OPTO ISOLATION REFERENCE & ERROR AMP TRIM (OPTIONAL) UVLO & OVLO COMPARATORS 1.5, 1.8, 2.5, 3.3V and 5V-output models use the synchronous-rectifier configuration shown above. 12V and 15V-output models employ a standard forward architecture. Figure 1. Simplified Schematic DATEL, Inc., Mansfield, MA 02048 (USA) * Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 * Email: sales@datel.com * Internet: www.datel.com A Series 9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S Performance Specifications and Ordering Guide Input PRELIMINARY Output R/N (mVp-p) Regulation (Max.) Range (Volts) IIN (mA) Efficiency Package (Case, Pinout) Model VOUT (Volts) IOUT (mA) Typ. Max. Line Load VIN Nom. (Volts) Min. Typ. UWR-1.5/6000-D12A 1.5 6000 45 65 0.2% 0.3% 12 10-18 85/914 TBD 82% C14, P22 UWR-1.5/6000-D24A 1.5 6000 45 65 0.2% 0.3% 24 18-36 50/454 TBD 82.5% C14, P22 UWR-1.5/6000-D48A 1.5 6000 45 65 0.2% 0.3% 48 36-75 40/226 TBD 83% C14, P22 UWR-1.8/6000-D12A 1.8 6000 50 70 0.2% 0.3% 12 10-18 85/1084 TBD 83% C14, P22 UWR-1.8/6000-D24A 1.8 6000 50 70 0.2% 0.3% 24 18-36 50/539 TBD 83.5% C14, P22 UWR-1.8/6000-D48A 1.8 6000 50 70 0.2% 0.3% 48 36-75 40/268 TBD 84% C14, P22 UWR-2.5/6000-D12A 2.5 6000 60 80 0.2% 0.3% 12 10-18 80/1489 TBD 84% C14, P22 UWR-2.5/6000-D24A 2.5 6000 60 80 0.2% 0.3% 24 18-36 45/740 TBD 84.5% C14, P22 UWR-2.5/6000-D48A 2.5 6000 60 80 0.2% 0.3% 48 36-75 35/367 TBD 85% C14, P22 UWR-3.3/4250-D12A 3.3 4250 85 100 0.2% 0.5% 12 10-18 80/1375 83% 85% C14, P22 UWR-3.3/4250-D24A 3.3 4250 85 100 0.2% 0.5% 24 18-36 45/672 84.5% 87% C14, P22 UWR-3.3/4250-D48A C14, P22 3.3 4250 85 100 0.2% 0.5% 48 36-75 35/336 85% 87% UWR-5/3000-D12A 5 3000 85 100 0.2% 0.3% 12 10-18 110/1471 83% 85% C14, P22 UWR-5/3000-D24A 5 3000 85 100 0.2% 0.3% 24 18-36 55/710 85.5% 88% C14, P22 UWR-5/3000-D48A 5 3000 85 100 0.2% 0.3% 48 36-75 35/355 85.5% 88% C14, P22 UWR-12/1250-D12A 12 1250 85 100 0.2% 0.3% 12 10-18 20/1471 82.5% 85% C14, P22 UWR-12/1250-D24A 12 1250 85 100 0.2% 0.3% 24 18-36 20/718 85% 87% C14, P22 UWR-12/1250-D48A 12 1250 85 100 0.2% 0.3% 48 36-75 20/359 85% 87% C14, P22 UWR-15/1000-D12A 15 1000 85 100 0.2% 0.3% 12 10-18 20/1471 82.5% 85% C14, P22 UWR-15/1000-D24A 15 1000 85 100 0.2% 0.3% 24 18-36 20/718 85% 87% C14, P22 UWR-15/1000-D48A 15 1000 85 100 0.2% 0.3% 48 36-75 20/359 85% 87% C14, P22 Typical at TA = +25C under nominal line voltage and full-load conditions, unless otherwise noted. Ripple/Noise (R/N) is tested/speciifed over a 20MHz bandwidth. All models are specified with two external 0.47F multi-layer ceramic capacitors installed across their output pins. P A R T N U M B E R Load regulation is specified over 10%-100% load conditions. 1.5-5V models are stable and regulate under no-load conditions. 12/15V models have minimum loading requirements. See Performance/Functional Specifications. Nominal line voltage, no-load/full-load conditions. M E C H A N I C A L S T R U C T U R E S P E C I F I C A T I O N S 2.00 (50.80) U WR - 3.3 / 4250 - D48 A CT Output Configuration: U = Unipolar Maximum Output Current in mA 0.49 (12.45) Case C14 STANDOFF 0.020 (0.51) A-Series High Reliability Wide Range Input Nominal Output Voltage: 1.5, 1.8, 2.5, 3.3, 5, 12 or 15 Volts PLASTIC CASE Optional Functions See Below Input Voltage Range: D12 = 10-18 Volts (12V nominal) D24 = 18-36 Volts (24V nominal) D48 = 36-75 Volts (48V nominal) 0.60 (15.24) 0.800 (20.32) 4 1 0.800 (20.32) 2 Optional Functions 0.200 (5.08) 0.400 (10.16) 6 3 Trim function on pin 5. No pin 3. 0.100 (2.54) 5 1.00 (25.40) T 0.040 0.002 DIA. (1.016 0.051) 0.20 MIN (5.08) BOTTOM VIEW C On/Off Control function (positive polarity) on pin 3. No pin 5. 0.10 (2.54) CT On/Off Control function (positive polarity) on pin 3. Trim function on pin 5. I/O Connections Pin Function P22 1 +Input 2 -Input 3 On/Off Control* 4 +Output 5 Trim* 6 Common N On/Off Control function (negative polarity) on pin 3. No pin 5. NT On/Off Control function (negative polarity) on pin 3. Trim function on pin 5. S Sync function on pin 3. No pin 5. ST Sync function on pin 3. Trim function on pin 5. Blank -- No Trim function. No On/Off Control function. 2 * Pins 3 and 5 are optional. See Optional Functions and Technical Notes for details. UWR Models 9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S Performance/Functional Specifications Dynamic Characteristics Typical @ TA = +25C under nominal line voltage and full-load conditions, unless noted. Input Input Voltage Range: D12A Models D24A Models D48A Models 10-18 Volts (12V nominal) 18-36 Volts (24V nominal) 36-75 Volts (48V nominal) Overvoltage Shutdown: D12A Models D24A Models D48A Models 18.5-21 Volts (20V typical) 37-40 Volts (38V typical) 77-81 Volts (78.5V typical) Start-Up Threshold: D12A Models D24A Models D48A Models 9.4-9.8 Volts (9.6V typical) 16.5-18 Volts (17V typical) 34-36 Volts (35V typical) Undervoltage Shutdown: D12A Models D24A Models D48A Models 7.5-8.5 Volts (8V typical) 16-17 Volts (16.5V typical) 32.5-35.5 Volts (34V typical) Input Current: Normal Operating Conditions Standby Mode (Off, OV, UV) See Ordering Guide 5mA Input Filter Type Pi Reverse-Polarity Protection Brief duration, 10A maximum 200sec max. to 1.5% of final value Start-Up Time: VIN to VOUT On/Off to VOUT 50msec 30msec Switching Frequency 310kHz (30kHz) Environmental Operating Temperature (Ambient): Without Derating With Derating -40 to +60/70C to +100C (See Derating Curves) Case Temperature: Maximum Allowable +100C Storage Temperature -40 to +105C Physical Dimensions On/Off Control (Optional, Pin 3): D12A, D24A, & D48A Models D12AN, D24AN, & D48AN Models Sync (Optional, Pin 3) Input Threshold (Rising edge active) Input Voltage Low Input Voltage High Input Resistance Output High Voltage (100A load) Output Drive Current Input/Output Pulse Width 2" x 1" x 0.49" (51 x 25 x 12.45mm) Shielding None Case Material Diallyl phthalate, UL94V-0 rated Pin Material Brass, solder coated Weight 1.4 ounces (39.7 grams) All models are specified with two external 0.47F multi-layer ceramic capacitors installed across their output pins. See Minimum Output Loading Requirements under Technical Notes. See Technical Notes for details. The On/Off Control, Sync and Trim functions are optional and must be installed by DATEL. See Optional Functions or contact DATEL for details. The On/Off Control is designed to be driven with open-collector logic or the application of appropriate 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. Output noise maybe further reduced with the addition of additional external output capacitors. See Technical Notes. Operating temperature range without derating is model and input-voltage dependent. See Temperature Derating. On = open or 13V - +VIN, IIN = 50A max. Off = 0-0.8V, IIN = 1mA max. On = 0-0.8V, IIN = 2.6mA max. Off = open or 3.3-5.5V, IIN = 1mA max. 1-2.7 Volts 0-0.9 Volts 2.8-5 Volts 35k minimum 3.5-4.8 Volts 35mA 160-360nsec Absolute Maximum Ratings Input Voltage: Continuous: D12 Models D24 Models D48 Models Transient (100msec): D12 Models D24 Models D48 Models Output VOUT Accuracy (50% load): 1.5V/1.8V/2.5V/3.3V Outputs 5/12/15V Outputs Transient Response (50% load step) 1.5%, maximum 1%, maximum Minimum Loading for Specification: 1.5V/1.8V/2.5V/3.3V/5V Outputs No load 12V/15V Outputs 10% of IOUT max. Input Reverse-Polarity Protection Minimum Loading for Stability: 1.5V/1.8V/2.5V/3.3V/5V Outputs 12V/15V Outputs No load 25mA Ripple/Noise (20MHz BW) See Ordering Guide Line/Load Regulation See Ordering Guide Output Overvoltage Protection: 1.5/1.8V Outputs 2.5V/3.3V Outputs 5V/12V/15V Outputs Efficiency See Ordering Guide Output Current 22 Volts 44 Volts 88 Volts 50 Volts 50 Volts 100 Volts Current must be <10 Amps. Brief duration only. Fusing recommended. TBD/TBD Volts, unlimited duration TBD/4.5 Volts, unlimited duration 6.8/15/18 Volts, unlimited duration Current limited. Devices can withstand sustained output short circuits without damage. Isolation Voltage: Input-to-Output 1500Vdc minimum Isolation Capacitance 470pF Case Temperature +100C 100M Storage Temperature -40 to +105C Lead Temperature (soldering, 10 sec.) +300C Isolation Resistance Current Limiting: 1.5V/1.8V/2.5V/3.3V/5V Outputs 12V/15V Outputs Hiccup technique, auto-recovery Power-limiting technique, auto-recovery Overvoltage Protection Zener/transorb clamp, magnetic feedback Temperature Coefficient 0.04% per C. 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. 3 A Series T E C H N I C A L 9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S Trim adjustment greater than 5% can have an adverse effect on the converter's performance and is not recommended. N O T E S Floating Outputs 4 1 Since these are isolated DC/DC converters, their outputs are "floating." Designers will usually use the output Common (pin 6) as the ground/return of the load circuit. You can, however, use the +Output (pin 4) as ground/return to effectively reverse the output polarity. +OUTPUT +INPUT 2 -INPUT Minimum Output Loading Requirements 3 1.5-5V models employ a synchronous-rectifier design topology. All models regulate within spec and are stable under no-load conditions. 12/15V models employ a traditional forward architecture and require 10% loading (125mA for 12V models, 100mA for 15V models) to achieve their listed regulation specs. 12/15V models also have a minimum-load-for-stability requirement (25mA). For 12/15V models, operation between 25mA and 10% loading will result in stable operation but regulation may degrade. Operation under no-load conditions will not damage the 12/15V devices; however they may not meet all listed specifications. ON/OFF CONTROL TRIM COMMON 5 20k 5-22 Turns LOAD 6 Figure 2. Trim Connections Using A Trim Pot 1 +INPUT +OUTPUT 4 RTRIM DOWN 2 -INPUT 3 Filtering and Noise Reduction All A-Series UWR 9-15 Watt DC/DC Converters achieve their rated ripple and noise specifications using the external input and output capacitors specified in the Performance/Functional Specifications table. In critical applications, input/output noise may be further reduced by installing additional external I/O caps. Input capacitors should be selected for bulk capacitance, low ESR and high rms-ripple-current ratings. Output capacitors should be selected for low ESR and appropriate frequency response. All caps should have appropriate voltage ratings and be mounted as close to the converters as possible. ON/OFF CONTROL TRIM COMMON 5 LOAD 6 Figure 3. Trim Connections To Decrease Output Voltage Using Fixed Resistors 1 +INPUT +OUTPUT 2 -INPUT The most effective combination of external I/O capacitors will be a function of your particular load and layout conditions. Our Applications Engineers will be happy to recommend potential solutions and can discuss the possibility of our modifying a given device's internal filtering to meet your specific requirements. Contact our Applications Engineering Group for additional details. 3 ON/OFF CONTROL TRIM 4 5 LOAD RTRIM UP COMMON 6 Figure 4. Trim Connections To Increase Output Voltage Using Fixed Resistors Input Fusing Model Certain applications and/or safety agencies may require the installation of fuses at the inputs of power conversion components. Fuses should also be used if the possibility of sustained, non-current-limited, input-voltage polarity reversals exists. For DATEL A-Series UWR 9-15 Watt DC/DC Converters, you should use slow-blow type fuses with values no greater than the following. VIN Range "D12A" Models "D24A" Models "D48A" Models Fuse Value 3 Amps 2 Amps 1 Amp Trimming Output Voltages These converters have a trim capability (pin 5) that allows users to adjust the output voltage 5%. Adjustments to the output voltage can be accomplished via a trim pot, Figure 2, or a single fixed resistor as shown in Figures 3 and 4. A single fixed resistor can increase or decrease the output voltage depending on its connection. Fixed resistors should have an absolute TCR less than 100ppm/C to minimize sensitivity to changes in temperature. A single resistor connected from the Trim (pin 5) to the +Output (pin 4), see Figure 3, will decrease the output voltage. A resistor connected from the Trim (pin 5) to Output Common (pin 6) will increase the output voltage. Trim Equation UWR-3.3/4250-D12A UWR-3.3/4250-D24A UWR-3.3/4250-D48A RTDOWN (k) = UWR-5/3000-D12A UWR-5/3000-D24A UWR-5/3000-D48A RTDOWN (k) = UWR-12/1250-D12A UWR-12/1250-D24A UWR-12/1250-D48A RTDOWN (k) = UWR-15/1000-D12A UWR-15/1000-D24A UWR-15/1000-D48A RTDOWN (k) = RTUP (k) = RTUP (k) = RT UP (k) = RTUP (k) = 2.49(VO - 1.27) 3.3 - VO 3.16 VO - 3.3 -16.9 -16.9 2.49(VO - 2.527) -15 5 - VO 6.292 VO - 5 -15 6.34(VO - 5.714) -49.9 12 - VO 36.23 VO - 12 -49.9 7.87(VO - 7.136) -63.4 15 - VO 56.16 VO - 15 -63.4 Accuracy of adjustment is subject to tolerances or resistor values and factory-adjusted output accuracy. VO = desired output voltage. 4 UWR Models 9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S D24A Temperature Derating Curves for 5V, 12V and 15V Output Models Start-Up Threshold and Undervoltage Shutdown 15.0 Under normal start-up conditions, devices will not begin to regulate until the ramping-up input voltage exceeds the Start-Up Threshold Voltage (35V for "D48A" models). Once operating, devices will not turn off until the input voltage drops below the Undervoltage Shutdown/Lockout limit (34V for "D48A" models). Subsequent re-start will not occur until the input is brought back up to the Start-Up Threshold. This built-in hysteresis obviously avoids any indeterminate on/off situations at a single voltage. VIN = 18V-27V 13.5 12.0 Output Power (Watts) 10.5 Start-Up Time The VIN to VOUT Start-Up Time is the interval between the time at which a ramping input voltage crosses the turn-on threshold point and the fullyloaded output voltage enters and remains within its specified accuracy band. Actual measured times will vary with input source impedance, external input capacitance, and the slew rate and final value of the input voltage as it appears to the converter. VIN = 18V-30V 9.0 7.5 VIN = 18V-36V 6.0 4.5 3 1.5 0 -40 0 40 45 50 55 60 65 70 75 80 85 90 95 100 Ambient Temperature (C) The On/Off to VOUT Start-Up Time assumes the converter is turned off via the On/Off Control with the nominal input voltage already applied to the converter. The specification defines the interval between the time at which the converter is turned on and the fully-loaded output voltage enters and remains within its specified accuracy band. D24A and D48A Temperature Derating Curves for 3.3V Output Models 14 VIN = 18V-27V (D24A) VIN = 36V-48V (D48A) 12 Output Power (Watts) 10 TEMPERATURE DERATING The thermal performance of A-Series UWR 15 Watt DC/DC Converters is depicted in the derating curves shown below. All devices, when operated at full load, in still ambient air, over their full specified input voltage range, can safely operate to +60C. All models, other than the D12A models (10-18 Volt input range), can operate at higher ambient temperatures if the input range is narrowed. For example, model UWR-5/3000-D48A can operate safely to +70C if the input range is kept between 36 and 48 Volts. Contact DATEL's Applications Engineering Group if you need additional details. VIN = 18V-30V (D24A) VIN = 36V-60V (D48A) 8 VIN = 18V-36V (D24A) 6 VIN = 36V-75V (D48A) 4 2 0 -40 0 40 45 50 55 60 65 70 75 80 85 90 95 100 Ambient Temperature (C) D48A Temperature Derating Curves for 5V, 12V and 15V Output Models D12A (10-18V) Temperature Derating Curves 15.0 15.0 VIN = 36V-48V 13.5 13.5 12.0 12.0 10.5 10.5 Output Power (Watts) Output Power (Watts) VOUT = 5V, 12V and 15V 9.0 7.5 VOUT = 3.3V 6.0 4.5 VIN = 36V-60V 9.0 7.5 VIN = 36V-75V 6.0 4.5 3 3 1.5 1.5 0 0 -40 0 40 45 50 55 60 65 70 75 80 85 90 95 -40 100 0 40 45 50 55 60 65 70 75 Ambient Temperature (C) Ambient Temperature (C) 5 80 85 90 95 100 A Series 9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S EFFICIENCY VS. LINE AND LOAD UWR-5/3000-D12A Efficiency vs. Line and Load 90 85 85 80 80 75 75 Efficiency (%) Efficiency (%) UWR-3.3/4250-D12A Efficiency vs. Line and Load 90 VIN = 10V 70 65 VIN = 12V 60 VIN = 10V 70 VIN = 12V 65 60 55 VIN = 18V VIN = 18V 55 50 50 45 45 40 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 0.3 4.3 0.6 1.0 2 2.3 2.7 3 2.7 3 2.7 3 UWR-5/3000-D24A Efficiency vs. Line and Load UWR-3.3/4250-D24A Efficiency vs. Line and Load 90 90 85 85 80 80 75 75 Efficiency (%) Efficiency (%) 1.7 Load Current (Amps) Load Current (Amps) VIN = 18V 70 65 VIN = 24V 60 VIN = 18V 70 VIN = 24V 65 60 55 VIN = 36V VIN = 36V 55 50 50 45 40 45 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 0.3 4.3 0.6 1.0 1.3 1.7 2 2.3 Load Current (Amps) Load Current (Amps) UWR-3.3/4250-D48A Efficiency vs. Line and Load UWR-5/3000-D48A Efficiency vs. Line and Load 90 90 85 85 80 80 75 75 Efficiency (%) Efficiency (%) 1.3 VIN = 36V 70 65 VIN = 48V 60 VIN = 36V 70 VIN = 48V 65 60 55 VIN = 75V VIN = 75V 55 50 50 45 45 40 0.4 0.9 1.4 1.8 2.3 2.8 3.3 3.8 4.3 0.3 Load Current (Amps) 0.6 1.0 1.3 1.7 2 Load Current (Amps) 6 2.3 UWR Models 9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S EFFICIENCY VS. LINE AND LOAD UWR-15/1000-D12A Efficiency vs. Line and Load UWR-12/1250-D12A Efficiency vs. Line and Load 90 90 85 85 80 75 Efficiency (%) Efficiency (%) 80 VIN = 10V 70 VIN = 12V 65 VIN = 18V VIN = 10V 75 VIN = 12V 70 VIN = 18V 65 60 60 55 55 50 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 0.1 1.3 0.2 0.3 Load Current (Amps) UWR-12/1250-D24A Efficiency vs. Line and Load 90 85 85 0.7 0.8 0.9 1 0.9 1 0.9 1 80 75 Efficiency (%) Efficiency (%) 0.6 UWR-15/1000-D24A Efficiency vs. Line and Load 90 80 VIN = 18V 70 VIN = 24V 65 VIN = 36V VIN = 18V 75 VIN = 24V 70 VIN = 36V 65 60 60 55 50 55 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 1.3 0.1 0.2 0.3 Load Current (Amps) 0.4 0.6 0.7 0.8 Load Current (Amps) UWR-12/1250-D48A Efficiency vs. Line and Load UWR-15/1000-D48A Efficiency vs. Line and Load 90 90 85 85 80 80 75 Efficiency (%) Efficiency (%) 0.4 Load Current (Amps) VIN = 36V 70 VIN = 48V 65 VIN = 75V VIN = 36V 75 VIN = 48V 70 VIN = 75V 65 60 60 55 50 55 0.1 0.2 0.4 0.5 0.7 0.8 1.0 1.1 0.1 1.3 Load Current (Amps) 0.2 0.3 0.4 0.6 0.7 Load Current (Amps) 7 0.8 A Series 9 - 1 5 W, S I N G L E O U T P U T D C / D C C O N V E RT E R S Typical Performance Curves Output Ripple and Noise (PARD) Output Ripple and Noise (PARD) (VIN = nominal, 3.3V @ 4.25A, two external 0.47F output capacitors.) (VIN = nominal, 12V @ 1.25A, two external 0.47F output capacitors.) 20mV/div, 20MHz BW 20mV/div, 20MHz BW Output Ripple and Noise (PARD) Output Ripple and Noise (PARD) (VIN = nominal, 5V @ 3A, two external 0.47F output capacitors.) (VIN = nominal, 15V @ 1A, two external 0.47F output capacitors.) 20mV/div, 20MHz BW (R) 20mV/div, 20MHz BW (R) INNOVATION and EXCELLENCE ISO-9001 REGISTERED DS-0426B 3/01 DATEL (UK) LTD. Tadley, England Tel: (01256)-880444 DATEL S.A.R.L. Montigny Le Bretonneux, France Tel: 01-34-60-01-01 DATEL GmbH Munchen, Germany Tel: 89-544334-0 DATEL KK Tokyo, Japan Tel: 3-3779-1031, Osaka Tel: 6-6354-2025 DATEL, Inc. 11 Cabot Boulevard, Mansfield, MA 02048-1151 Tel: (508) 339-3000 (800) 233-2765 Fax: (508) 339-6356 Internet: www.datel.com Email: sales@datel.com Data Sheet Fax Back: (508) 261-2857 DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark. 8