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| NON-ISOLATED DC/DC CONVERTERS 3 Vdc - 3.6 Vdc Input 12 Vdc/0.8 A & 15 Vdc/0.6 A Output xRAH-01CXx0 Series * * * * Non-Isolated High Efficiency Fixed Frequency (550 kHz) Low Profile Package RoHS Compliant * * * Rev.A Trim Function (option) Allows Burst Mode Operation at Low Load Currents UL60950-1 Recognized (UL/cUL) Description The Bel xRAH-01CXx0 is part of the low cost non-isolated dc/dc converter series. The modules use a SMD or SIP package or vertical package for ease of layout and space savings. The output is closely regulated and the efficiency of 12 Vdc output module is typically 86% at full load. Typical features include allows burst mode operation at low load currents and trim function (option). Part Selection Output Voltage 12 V 15 V Input Voltage 3 V - 3.6 V 3 V - 3.6 V Max. Output Current 0.8 A 0.6 A Max. Output Power 9.6 W 9.0 W Typical Efficiency 86% 85% Part Number Surface Mount SRAH-01CX20 SRAH-01CX50 Part Number Vertical Mount VRAH-01CX20 VRAH-01CX50 Notes: 1. Add "0" suffix at the end of the model number to indicate "Tube Packaging", and "R" for "Reel Packaging", and "G" for "Tray Packaging". 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. Absolute Maximum Ratings Parameter Input Voltage (continuous) Ambient Temperature Storage Temperature Min 2.8 V -40 C -40 C Typ Max 4V 85 C 125 C Notes Input Specifications Parameter Input Voltage Input Current (no load) Input Current (full load) VO=12V VO=15V Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn-on Voltage Threshold 2 Min 3V - Typ 15 mA 100 mA 30 mA 0.02 A s 2.8 V 2 Max 3.6 V 4.3 A 4A 150 mA 60 mA 0.05 A s 2.9 V 2 Notes With simulated source impedance of 500 nH, 5 Hz to 20 MHz; Use 270 uF/16 V capacitor with ESR = 0.018 ohm max. at 100KHz at 25 C Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 3 Vdc - 3.6 Vdc Input 12 Vdc/0.8 A & 15 Vdc/0.6 A Output Output Specifications Parameter Output Voltage Set Point VO=12 V VO=15 V Line Regulation VO=12 V VO=15 V Load Regulation VO=12 V VO=15 V Regulation Over Temperature (-40 C to +85 C) VO=12 V VO=15 V Output Current VO=12 V VO=15 V Ripple and Noise (rms) VO=12 V; IO=0 A VO=15 V; IO=0 A VO=12 V; IO=0.8 A VO=15 V; IO=0.6 A Ripple and Noise (pk-pk) VO=12V; IO=0A VO=15V; IO=0A VO=12V; IO=0.8A VO=15V; IO=0.6A Rise Time Overshoot at Turn on Output Capacitance 33 uF 85 mV 100 mV 60 mV 100 mV 5 mS 0% 120 mV 150 mV 100 mV 150 mV 5% 330 uF The min output capacitance is 33 uF Tantalum capacitor at the output 25 mV 25 mV 25 mV 35 mV 50 mV 50 mV 50 mV 60 mV 0A 0A 0.8 A 0.6 A 60 mV 75 mV 120 mV 150 mV 20 mV 20 mV 40 mV 40 mV 11.58 V 14.475 V 12 V 15 V 12.42 V 15.525 V Min Typ Max Notes Test condition: Vin=3.3V, lout=full load - 45 mV 60 mV 80 mV 100 mV Test conditions: BW = 0-20 MHz; 1 uF Ceramic capacitor and 33 uF Tantalum capacitor at the output Transient Response 50% ~ 100% Max Load 100% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time All Outputs 130 mV 100 uS 130 mV 100 uS 200 mV 200 uS 200 mV 200 uS di/dt = 0.1 A/uS; Vin = 3.3 V; and with 33 uF Tantalum capacitor at the output Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 3 Vdc - 3.6 Vdc Input 12 Vdc/0.8 A & 15 Vdc/0.6 A Output General Specifications Parameter Efficiency VO=12 V VO=15 V Switching Frequency Output Trim Range MTBF Dimensions (surface mount) Inches (L x W x H) Millimeters (L x W x H) Dimensions (vertical) Inches (L x W x H) Millimeters (L x W x H) Weight 82% 81% 500 kHz 90% VO 86% 85% 550 kHz 13,296,605 hours 0.78 x 0.7 x 0.32 19.81 x 17.78 x 8.13 0.7 x 0.308 x 0.65 17.78 x 7.82 x 16.51 5.2 g 650 kHz 110% VO Calculated Per Bell Core SR-332 (Vin=3.3 V; Vo=12 V; IO = 0.64 A; Ta = 25 C) Min Typ Max Notes Measured at Vin=3.3 V, full load Note: All specifications are typical at 25 C unless otherwise stated. Output Trim Equations Equations for calculating the trim resistor (in k) given the desired adjusted voltage (Vadj) and the nominal output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the resistors should be used for any given application. Vout Rtrim-down Module Trim Rtrim-down A = -B Vnom - Vadj GND Rtrim-up = Vadj C -D - Vnom Vout Module Trim Rtrim-up GND Vnom 12 15.055 A 164.640 209.542 B 21.850 20.600 C 11.760 11.760 D 7.150 5.900 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 3 Vdc - 3.6 Vdc Input 12 Vdc/0.8 A & 15 Vdc/0.6 A Output Efficiency Data Efficiency Curve Efficiency Curve 88.0% 88.0% 87.0% 86.0% 85.0% 84.0% 83.0% 82.0% 81.0% 80.0% 79.0% 78.0% 0.08 86.0% 84.0% Efficiency 3.0 V 3.3 V 3.6 V 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% Efficiency 3.0 V 3.3 V 3.6 V 0.20 0.40 0.60 0.80 0.06 0.15 0.30 0.45 0.60 Output Current (A) Output Current (A) xRAH-01CX20 xRAH-01CX50 Thermal Derating Curves xRAH-01CX20 xRAH-01CX50 Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 3 Vdc - 3.6 Vdc Input 12 Vdc/0.8 A & 15 Vdc/0.6 A Output Ripple and Noise Waveforms 3.3 Vdc input, 12 Vdc output 3.3 Vdc input, 15 Vdc output Note: Ripple and noise at full load, 1 uF ceramic cap and 33 uF tantalum cap at the output, and Ta=25 deg C. Transient Response Waveforms 50% to 100% load transient at Vin=3.3 V, Vo=12 V 100% to 50% load transient at Vin=3.3 V, Vo=12 V 50% to 100% load transient at Vin=3.3 V, Vo=15 V 100% to 50% load transient at Vin=3.3 V, Vo=15 V Note: Transient response at di/dt=0.1 A/uS, with an external 33 uF tantalum load cap at the output, and Ta=25 deg C. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 3 Vdc - 3.6 Vdc Input 12 Vdc/0.8 A & 15 Vdc/0.6 A Output Mechanical Outline SRAH-01CXx0 Pin Connections bel Pin 1 2 3 4 5 6 7 Function N/A Vin Ground Vout Trim (option) N/A N/A VRAH-01CXx0 Pin Connections bel bel Pin 1 2 3 4 5 Function N/A Vin Ground Vout Trim (option) RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. These parts are not however compatible with the higher temperatures associated with lead free solder processes and must be soldered using a reflow profile with a peak temperature of no more than 240 C. (c)2007 Bel Fuse Inc. Specifications subject to change without notice. 011007 CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST Bel Fuse Ltd. 8F/ 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com EUROPE Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com |
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