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| NON-ISOLATED DC/DC CONVERTERS 2.5 V Input 0.9 V-1.65 V/10 A Output XRAH-10J Series * * * * Non-Isolated Low profile package (7.82 mm) Fixed frequency (300 kHz) Under-voltage lockout (UVLO) * * * * Remote On/Off Short circuit protection Over current protection Trim Function Description The Bel XRAH-10Jxx0 is part of the low cost non-isolated dc/dc power converter series. The modules use a SMD or SIP package for ease of layout and space savings. The output is closely regulated and the efficiency of 1.5 V output is typically 88% at full load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit protection. Part Selection Output Voltage 1.5 V 1.2 V 1.0 V Input Voltage 2.5 V 2.5 V 2.5 V Max. Output Current 10 A 10 A 10 A Max. Output Power 15 W 12 W 10 W Typical Efficiency 88% 83% 80% Part Number Surface Mount SRAH-10J150 SRAH-10J120 SRAH-10J100 Part Number Vertical Mount VRAH-10J150 VRAH-10J120 VRAH-10J100 Note: Add "0" suffix at the end of the model number to indicate "Tube Packaging", and "R" for "Reel Packaging", and "G" for "Tray Packaging". Absolute Maximum Ratings Parameter Input Voltage (continuous) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 C -40 C Typ Max 6V 7V 85 C 125 C Notes Input Specifications Parameter Input Voltage Input Current (no load) Input Current (full load) Vo=1.5 V Vo=1.2 V Vo=1.0 V Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn on Voltage Threshold Turn off Voltage Threshold 2 Min 2.25 V 2V 1.8 V Typ 2.5 V 75 mA 6.8 A 5.6 A 4.9 A 4 mA 80 mA 25 mA 0.04 A s 2.1 V 2V 2 Max 2.75 V 8 mA 150 mA 50 mA 0.10 A s 2.15 V 2.15 V 2 Notes Tested with simulated source impedance of 500 nH, 5 Hz to 20 MHz; with a 270 uF/16 V with ESR=0.018 ohm max, at 100 kHz 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 2.5 V Input 0.9 V-1.65 V/10 A Output Output Specifications Parameter Output Voltage Set Point Vo=1.5 V Vo=1.2 V Vo=1.0 V Line Regulation Vo=1.5 V Vo=1.2 V Vo=1.0 V Load Regulation Vo=1.5 V Vo=1.2 V Vo=1.0 V Regulation Over Temperature (-40 C to +85 C) Vo=1.5 V Vo=1.2 V Vo=1.0 V Output Current Current Limit Threshold Short Circuit Surge Transient Vo=1.5 V Vo=1.2 V Vo=1.0 V Ripple and Noise (rms) Ripple and Noise (pk-pk) Turn on Time Overshoot at Turn on Output Capacitance Transient Response 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time VO=1.0 V VO=1.2 V VO=1.5 V 90 mV 30 uS 90 mV 30 uS 80 mV 30 uS 80 mV 30 uS 80 mV 30 uS 80 mV 30 uS 125 mV 60 uS 125 mV 60 uS 120 mV 60 uS 120 mV 60 uS 120 mV 60 uS 120 mV 60 uS Test conditions: di/dt = 0.5 A/uS; Vin = 2.5 V; with a 220 uF tantalum capacitor at the output. 220 uF 5 mV 5 mV 5 mV 10 mV 10 mV 10 mV 2 mV 2 mV 2 mV 5 mV 5 mV 5 mV Min 1.470 V 1.176 V 0.980 V Typ 1.5 V 1.2 V 1.0 V Max 1.530 V 1.224 V 1.020 V Notes Test conditions: Vin=2.5 V, Io=full load 0A 13 A 13 mV 10 mV 9 mV 0.5 A s 2 0.5 A s 2 0.5 A s 15 mV 50 mV 1 mS 0% 2 25 mV 20 mV 20 mV 10 A 25 A 1.5 A s 2 1.5 A s 2 1.5 A s 25 mV 100 mV 2 mS 3% 4000 uF Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor at the output. 2 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 2.5 V Input 0.9 V-1.65 V/10 A Output General Specifications Parameter Efficiency VO=1.5 V VO=1.2 V VO=1.0 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 85% 83% 79% 250 kHz 90%Vo 88% 86% 82% 300 kHz 4,447,157 hours 0.78 x 0.70 x 0.32 19.81 x 17.78 x 8.13 0.70 x 0.308 x 0.65 17.78 x 7.82 x 16.51 4.7 g 350 kHz 110%Vo Min Typ Max Notes Measured at Vin=2.5 V, full load and Ta=25 C. Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) - - Control Specifications Parameter Min 0V 2V Typ Max 0.5 V 5.5 V Notes Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Remote on/off pin open, the module is on. 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. RTrimDown = Vnom 1.5 V 1.2 V 1.0 V A -B Vnom - Vadj A 49.788 31.241 11.029 B 287.900 223.900 92.800 RTrimUp = Vadj C -D - Vnom D 226.000 162.000 56.200 C 43.330 43.330 25.550 Vout Module Trim GND Rtrimdown Module Vout Trim GND Rtrimup 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 2.5 V Input 0.9 V-1.65 V/10 A Output Efficiency Data Efficiency Curve 94.0% 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 1 2 3 4 5 6 7 8 9 10 Output Current (A) Efficiency Curve 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 1 2 3 4 5 6 7 8 9 10 Output Current (A) Efficiency Efficiency 2.25 V 2.50 V 2.75 V 2.25 V 2.50 V 2.75 V XRAH-10J150 XRAH-10J120 Efficiency Curve 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% 1 2 3 4 5 6 7 8 9 10 Output Current (A) Efficiency 2.25 V 2.50 V 2.75 V XRAH-10J100 Thermal Derating Curve Note: Derating curve is for 1.2 V output and tested at nominal input. 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 2.5 V Input 0.9 V-1.65 V/10 A Output Mechanical Outline SRAH-10Jxx0 Pin Connections Pin 1 Function Remote On/Off (option) Vin Ground Vout Trim (option) N/A N/A bel 2 3 4 5 6 7 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 2.5 V Input 0.9 V-1.65 V/10 A Output Mechanical Outline (continued) VRAH-10Jxx0 bel bel Pin Connections Pin 1 2 3 4 5 Function Remote On/Off (option) 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)2005 Bel Fuse Inc. Specifications subject to change without notice. 112305 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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