NON-ISOLATED DC/DC CONVERTERS 2.5 Vdc Input 0.9 Vdc - 1.65 Vdc/10 A Output xRAH-10J Series RoHS Compliant Rev.A • Non-Isolated • Remote On/Off • Low Profile Package (7.82 mm) • Short Circuit Protection • Fixed Frequency (300 kHz) • Over Current Protection • Under-Voltage Lockout (UVLO) • Trim Function • UL60950-1 Recognized (UL/cUL) 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 Vdc 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 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) 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) Min 2.25 V - Typ 2.5 V 75 mA Max 2.75 V - - 6.8 A 5.6 A 4.9 A - - 4 mA 8 mA - 80 mA 150 mA - 25 mA 50 mA I t Inrush Current Transient - 2 0.04 A s 0.10 A s Turn on Voltage Threshold Turn off Voltage Threshold 2V 1.8 V 2.1 V 2V 2.15 V 2.15 V 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) 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 2 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 Vdc Input 0.9 Vdc - 1.65 Vdc/10 A Output Output Specifications Parameter Output Voltage Set Point Min Typ Max Vo=1.5 V Vo=1.2 V Vo=1.0 V 1.470 V 1.176 V 0.980 V 1.5 V 1.2 V 1.0 V 1.530 V 1.224 V 1.020 V Vo=1.5 V Vo=1.2 V Vo=1.0 V - 2 mV 2 mV 2 mV 5 mV 5 mV 5 mV Vo=1.5 V Vo=1.2 V Vo=1.0 V - 5 mV 5 mV 5 mV 10 mV 10 mV 10 mV Vo=1.5 V Vo=1.2 V Vo=1.0 V - 13 mV 10 mV 9 mV 25 mV 20 mV 20 mV Output Current 0A - 10 A Current Limit Threshold 13 A - 25 A - 0.5 A s 2 0.5 A s 2 0.5 A s 1.5 A s 2 1.5 A s 2 1.5 A s Ripple and Noise (rms) - 15 mV 25 mV Ripple and Noise (pk-pk) - 50 mV 100 mV Turn on Time - 1 mS 2 mS Overshoot at Turn on - 0% 3% 220 uF - 4000 uF Notes Test conditions: Vin=2.5 V, Io=full load Line Regulation Load Regulation Regulation Over Temperature (-40 °C to +85 °C) Short Circuit Surge Transient Vo=1.5 V Vo=1.2 V Vo=1.0 V Output Capacitance 2 2 Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor at the output. Transient Response 50% ~ 100% Max Load Overshoot - 90 mV 125 mV Settling Time - 30 uS 60 uS 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load Overshoot VO=1.5 V - 90 mV 125 mV - 30 uS 60 uS Overshoot - 80 mV 120 mV Settling Time - 30 uS 60 uS 120 mV Overshoot VO=1.2 V - 80 mV Settling Time - 30 uS 60 uS Overshoot - 80 mV 120 mV Settling Time Overshoot Settling Time VO=1.0 V - 30 uS 60 uS - 80 mV 120 mV - 30 uS 60 uS Test conditions: di/dt = 0.5 A/uS; Vin = 2.5 V; with a 220 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 2.5 Vdc Input 0.9 Vdc - 1.65 Vdc/10 A Output General Specifications Parameter Min Typ Max Notes 85% 83% 79% 250 kHz 90%Vo 88% 86% 82% 300 kHz - 350 kHz 110%Vo Efficiency VO=1.5 V VO=1.2 V VO=1.0 V Switching Frequency Output Trim Range MTBF Measured at Vin=2.5 V, full load and Ta=25 °C. Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) 4,447,157 hours Dimensions (surface mount) Inches (L × W × H) Millimeters (L × W × H) Dimensions (vertical) Inches (L × W × H) Millimeters (L × W × H) Weight 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 - Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max Signal Low (Unit Off) 0V - 0.5 V Signal High (Unit On) 2V - 5.5 V Notes Remote On/Off Remote on/off pin open, the module is on. Output Trim Equations Equations for calculating the trim resistor (in kΩ) 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 = A −B Vnom − Vadj Vnom 1.5 V 1.2 V 1.0 V A 49.788 31.241 11.029 RTrimUp = B 287.900 223.900 92.800 Vadj C 43.330 43.330 25.550 Trim GND D 226.000 162.000 56.200 Vout Vout Module C −D − Vnom Rtrimdown Module 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 Vdc Input 0.9 Vdc - 1.65 Vdc/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% Efficiency Efficiency Efficiency Curve 2.25 V 2.50 V 2.75 V 1 2 3 4 5 6 7 8 9 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 10 2.25 V 2.50 V 2.75 V 1 Output Current (A) 2 3 4 5 6 7 8 9 10 Output Current (A) xRAH-10J150 xRAH-10J120 Efficiency Efficiency Curve 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 78.0% 76.0% 74.0% 72.0% 70.0% 2.25 V 2.50 V 2.75 V 1 2 3 4 5 6 7 8 9 10 Output Current (A) xRAH-10J100 Thermal Derating Curve Note: Derating curve is for 1.2 V output and tested at nominal input voltage. 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 Vdc Input 0.9 Vdc - 1.65 Vdc/10 A Output Ripple and Noise Waveforms Ripple and Noise at max Load 1.0 Vdc Output Ripple and Noise at max Load 1.2 Vdc Output Ripple and Noise at max Load 1.5 Vdc Output Note: Ripple and noise with a 1uF ceremic capacitor at the output, 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 2.5 Vdc Input 0.9 Vdc - 1.65 Vdc/10 A Output Transient Response Waveforms Transients 100% to 50% load 1.0 Vdc output Transients 50% to 100% load 1.0 Vdc output Transients 100% to 50% load 1.2 Vdc output Transients 50% to 100% load 1.2 Vdc output Transients 100% to 50% load 1.5 Vdc output Transients 50% to 100% load 1.5 Vdc output Note: Transient response at 2.5 V input, di/dt=0.5 A/uS, with 220 uF tantalum cap at the output, 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 2.5 Vdc Input 0.9 Vdc - 1.65 Vdc/10 A Outputt Mechanical Outline SRAH-10Jxx0 Pin Connections bel VRAH-10Jxx0 Pin 1 2 3 4 5 6 7 Function Remote On/Off Vin Ground Vout Trim N/A N/A Pin Connections bel bel Pin Function 1 Remote On/Off 2 Vin 3 Ground 4 Vout 5 Trim 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 ºC. ©2007 Bel Fuse Inc. Specifications subject to change without notice. 010507 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com 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 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