SRAH-03F1A0

NON-ISOLATED DC/DC CONVERTERS 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output xRAH-03F1A0 • • • • • Non-Isolated High Efficiency Fixed Frequency (300 kHz) Low Cost UL60950 Recognized (UL/cUL) RoHS Compliant • • • • Remote On/Off Input Under Voltage Lockout OCP/SCP Wide Range Trim Description The Bel xRAH-03F1A0 module is a non-isolated, step down dc/dc converter that operates from 3.0 Vdc to 5.5 Vdc source. This converter is available in a range of output voltages from 0.9 Vdc to 3.3 Vdc. It is packaged in a compact, overmolded package rated at 3 A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. The efficiency of 3.3 Vdc module is typically 92% at 5 Vdc input and full load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit protection. Part Selection Output Voltage 0.9 Vdc - 3.3 Vdc Input Voltage 3.0 Vdc - 5.5 Vdc Max. Output Current 3A Max. Output Power 10 W Typical Efficiency 92% Part Number Surface Mount SRAH-03F1A0 Part Number Vertical Mount VRAH-03F1A0 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 6V 85 °C 125 °C Notes Input Specifications Parameter Input Voltage VO=3.3 V VO=2.5 V VO=0.9 V-1.8 V Input Current (no load) Input Current (full load) VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Vo=0.9 V Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) 4.5 V 3.6 V 3.0 V 5 mA 75 mA 25 mA 5.5 V 5.5 V 5.5 V 70 mA 2.5 A 2.4 A 2.2 A 1.9 A 1.6 A 1.3 A 10 mA Tested with simulated source impedance of 500 nH, 5 Hz to 20 MHz and two 270 uF/16 V Oscon caps with ESR=0.018 ohm max at 100 kHz Min Typ Max Notes 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output Input Specifications (continued) Parameter 2 I t Inrush Current Transient Turn on Voltage Threshold Turn off Voltage Threshold Min 2.2 V Typ 2 0.004 A s 2.4 V Max 2 0.008 A s 2.9 V Notes Only for 0.9 V-1.8 V output modules. Note: All specifications are typical at nominal input (5 V), full load at 25 °C unless otherwise stated. Output Specifications Parameter Output Voltage Set Point VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V Line Regulation VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V Load Regulation VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V Regulation Over Temperature(-40 °C to +85 °C) VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (rms) VO=1.2 V-3.3 V VO=0.9 V Ripple and Noise (pk-pk) VO=1.2 V-3.3 V VO=0.9 V Turn on Time Overshoot at Turn on Output Capacitance Transient Response Overshoot 50% ~ 100% Max Load Settling Time Overshoot 100% ~ 50% Max Load Settling Time 0 uF 50 mV 40 mV 7 mS 0% 150 mV 20 uS 150 mV 20 uS 70 mV 60 mV 12 mS 3% 1200 uF 200 mV 40 uS 200 mV 40 uS Test conditions: di/dt = 0.5 A/uS; Vin = 5V 0A 5A 17 mV 13 mV 9 mV 8mV 6 mV 5 mV 72 mV 54 mV 39 mV 32 mV 26 mV 19 mV 0.022 A s 15 mV 10 mV 2 Min 3.217 V 2.437 V 1.755 V 1.462 V 1.170 V 0.877 V - Typ 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 0.9 V 10 mV 8 mV 6 mV 5 mV 4 mV 3 mV Max 3.383 V 2.563 V 1.845 V 1.538 V 1.230 V 0.923 V 20 mV 16 mV 12 mV 10 mV 8 mV 6 mV 33 mV 25 mV 18 mV 15 mV 12 mV 9 mV 97 mV 72 mV 52 mV 43 mV 40 mV 40 mV 3A 12 A 0.044 A s 25 mV 20 mV 2 Notes Test conditions: Vin=5 V, Io=50% full load Test condition: 0-20 MHz BW All 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output General Specifications Parameter Efficiency VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Vo=0.9 V Switching Frequency Output Trim Range (wide trim) MTBF Dimensions (surface mount) Inches (L × W × H) Millimeters (L × W × H) Dimensions (vertical) Inches (L × W × H) Millimeters (L × W × H) Weight 88% 86% 83% 80% 77% 75% 250 kHz 100%Vo 92% 90% 87% 84% 81% 79% 300 kHz 9,159,999 hours 360 kHz 403%Vo Vo=0.9 V Calculated Per Bell Core SR-332 (Vin= 5 V; Vo=3.3 V; IO = 80% load; Ta = 25 °C) Measured at Vin=5 V, full load and Ta=25 °C Min Typ Max Notes 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 5g - Control Specifications Parameter Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Min -0.3 V 2.8 V Typ Max 0.8 V 6V Notes Remote on/off pin open, unit on. Output Trim Equations Equations for calculating the trim resistor given the desired adjusted voltage (Vadj) and the nominal output voltage of the converter (Vo) are shown below. 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 ⎛ ⎞ 3.712 Rtrim_ up = ⎜ ⎜Vadj_ up −Vo −1⎟Kohm ⎟ ⎝ ⎠ Module Trim Rtrim-up GND Note: Output voltage Vo=0.902V when Ttrim-up is not connected. 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output Efficiency Data Efficiency Curve 100.0% 95.0% Efficiency 90.0% 85.0% 80.0% 75.0% 0.30 4.5 V 5.0 V 5.5 V Efficiency 100.0% 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 0.30 Efficiency Curve 3.6 V 5.0 V 5.5 V 0.75 1.50 2.25 3.00 0.75 1.50 2.25 3.00 Output Current (A) Output Current (A) Vo=3.3 V Efficiency Curve 95.0% 90.0% Efficiency Efficiency 95.0% 90.0% Vo=2.5 V Efficiency Curve 85.0% 80.0% 75.0% 70.0% 65.0% 0.30 0.75 1.50 2.25 3.00 Output Current (A) 3.0 V 3.3 V 5.0 V 5.5 V 85.0% 80.0% 75.0% 70.0% 65.0% 0.30 0.75 1.50 2.25 3.00 Output Current (A) 3.0 V 3.3 V 5.0 V 5.5 V Vo=1.8 V Efficiency Curve 95.0% 90.0% Efficiency 3.0 V 3.3 V 5.0 V 5.5 V Efficiency 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% Vo=1.5 V Efficiency Curve 85.0% 80.0% 75.0% 70.0% 65.0% 0.30 0.75 1.50 2.25 3.00 Output Current (A) 3.0 V 3.3 V 5.0 V 5.5 V 0.30 0.75 1.50 2.25 3.00 Output Current (A) Vo=1.2 V Vo=0.9 V 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output Thermal Derating Curve xRAH-03F1A0 Ripple and Noise Waveforms Vo=0.9 V Vo=1.2 V 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output Ripple and Noise Waveforms (continued) Vo=1.5 V Vo=1.8 V Vo=2.5 V Vo=3.3 V Note: Ripple and noise at full load, 5 Vdc input, 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output Transient Response Waveforms 50% to 100% load Transient at Vin=5 V, Vo= 0.9 V 100% to 50% load Transient at Vin=5 V, Vo= 0.9 V 50% to 100% load Transient at Vin=5 V, Vo= 1.2 V 100% to 50% load Transient at Vin=5 V, Vo= 1.2 V 50% to 100% load Transient at Vin=5 V, Vo= 1.5 V 100% to 50% load Transient at Vin=5 V, Vo= 1.5 V 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output Transient Response Waveforms (continued) 50% to 100% load Transient at Vin=5 V, Vo= 1.8 V 100% to 50% load Transient at Vin=5 V, Vo= 1.8 V 50% to 100% load Transient at Vin=5 V, Vo= 2.5 V 100% to 50% load Transient at Vin=5 V, Vo= 2.5 V 50% to 100% load Transient at Vin=5 V, Vo= 3.3 V 100% to 50% load Transient at Vin=5 V, Vo= 3.3 V Note: Transient Response at di/dt=0.5 A/uS, 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 3.0 Vdc - 5.5 Vdc Input 0.9 Vdc - 3.3 Vdc/3 A Output Mechanical Outline SRAH-03F1A0 Pin Connections bel Pin 1 2 3 4 5 6 7 Function Remote On/Off Vin Ground Vout Trim N/A N/A VRAH-03F1A0 Pin Connections bel Pin 1 2 3 4 5 Function Remote On/Off Vin Ground Vout Trim bel 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. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 032806 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