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| NON-ISOLATED DC/DC CONVERTERS 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output SRBA-06F1AX Series * * * * * Non-Isolated High Efficiency High Power Density Fixed Frequency (300 kHz) Converter Can Sink and Source Current RoHS Compliant * * * * * Under-voltage Lockout (UVLO) Wide Trim OCP/SCP Remote On/Off Active Low/High (option) Description The Bel SRBA-06F1AX modules are a series of non-isolated dc/dc converters that deliver up to 6A of output current with full load efficiency of 93% at 3.3 V output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 V to 3.63 V over a wide range of input voltage (2.4 V-5.5 V). The open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. Standard features include remote On/Off, over current protection, short circuit protection, wide input, and programmable output voltage. Part Selection Output Voltage 0.75 V - 3.63 V 1 Input Voltage 2.4 V - 5.5 V Max. Output Current 6A Max. Output Power 21.8 W Typical Efficiency 93% Model Number Active Low SRBA-06F1AL Model Number Active High SRBA-06F1A0 Notes: 1. These modules use a buck topology, so the output voltages must be 0.5 V less than the input voltage. 2. Add "G" to the end of the Model Number to indicate 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 -55 C Typ Max 5.8 V 5.5 V 85 C 125 C Notes Note: All specifications are typical 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 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Input Specifications Parameter Input Voltage Input Current (full load) Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=0.75V Input Current (no load) Vo=3.3 V Vo=0.75 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 2.4 V 1.8 V Typ 50 mA 25 mA 0.6 mA 120 mA 35 mA 2.05 V 2.0 V Max 5.5 V 4.73 A 3.66 A 4.09 A 4.31 A 3.57 A 2.40 A 0.04 A2s 2.4 V - Notes Vo, set Vin-0.5 V Tested with simulated source impedance of 1 uH, 5 Hz to 20 MHz, one 1000 uF/25 V AL capacitor and two 100 uF/ 10 V Tantalum capacitor at the input. Output Specifications Parameter Output Voltage Set Point Output Voltage Set Point Adjustment Range Selected by External Resistor or Voltage Load Regulation Line Regulation Regulation Over Temperature (-40 C to +85 C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (pk-pk) Ripple and Noise (rms) Min -2% Vo,set -3% Vo,set 0.7525 V 0A 9A Typ 0.4% Vo,set 0.3% Vo,set 0.4% Vo,set 0.32 A s 40 mV 10 mV 6 mS 130 mV 25 uS 130 mV 25 uS 2 Max 2% Vo,set 3% Vo,set 3.63 V 6A 18 A 70 mV 30 mV 10 mS 3% 1000 uF 3000 uF - Notes Vin=5 V, lo=50%lo,max Over all operating input voltages, resistive loads and temperature conditions Io=Io, min to 50%Io, max Vin=50% Vin, min to Vin, max Tref=Ta, min to Ta, max Tested with 0-20 MHz, with 10 uF Tantalum capacitor & 1 uF/10 V ceramic capacitor at the output. Turn on Time Overshoot at Turn on Output Capacitance ESR 1mohm 0 uF 0 uF ESR 10mohm Transient Response 50% ~ 100% Max Load Settling Time VO = 0.75 V 3.63 V 100% ~ 50% Max Load Settling Time di/dt=2.5 A/uS; Vin=5 V; and with 10 uF Tantalum capacitor & 1 uF/10 V TDK ceramic 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 2.4 V-5.5 V Input 0.75 V-3.63 V/6 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=0.75 V Switching Frequency Over Temperature Shutdown Output Voltage Trim Range MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 1.0 x 0.5 x 0.243 25.4 x 12.7 x 6.16 5g 250 kHz 0.7525 V 93% 91% 88% 87% 84% 78% 300 kHz 135 C 6,954,974 hours 350 kHz 3.63 V Measured at Vin=5 V, full load Min Typ Max Notes Calculated Per Bell Core SR-332 (Vin=5 V; Vo=0.75 V; IO = 4.8 A; Ta = 25C) Note: All specifications are typical at 25 C unless otherwise stated. Control Specifications Parameter Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Signal Low (Unit On) Signal High (Unit Off) Min -0.2 V -0.2 V 1.5 V Typ Max 0.3 V Vin, max 0.3 V Vin, max Notes SRBA-06F1A0; Remote On/Off pin open, Unit on. SRBA-06F1AL; Remote On/Off pin open, Unit on. Output Trim Equations Equation for calculating the trim resistor (in k) given the desired adjusted voltage (Vadj) is shown below. The Trim Up resistor should be connected between the Trim pin and Ground. Vout Rtrim 21.07 = - 5.11 Vadj - 0.7525 Module Trim GND Rtrim Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The Trim Up voltage should be connected between the Trim pin and Ground. Vout Vtrim = 0.7 - 0.1698 x (Vadj - 0.7525) Module Trim Vtrim GND 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 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Efficiency Data 3.3 V Module 100.0% 95.0% 90.0% Efficiency 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% 60.0% 2.5 V Module 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6 A 1.5 A 3.0 A Output Current 4.5 A 6.0 A 4.5 V 5.0 V 5.5 V 0.6 A 1.5 A 3.0 A Output Current 4.5 A 6.0 A 1.8 V Module 100.0% 95.0% 90.0% Efficiency 3.0 V 5.0 V 5.5 V 1.5 V Module 100.0% 95.0% 90.0% Efficiency 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6 A 2.4 V 5.0 V 5.5 V 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6 A 1.5 A 3.0 A Output Current 4.5 A 6.0 A 1.5 A 3.0 A Output Current 4.5 A 6.0 A 1.2 V Module 100.0% 95.0% 90.0% Efficiency 2.4 V 5.0 V 5.5 V Efficiency 100.0% 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.7525 V Module 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6 A 2.4 V 5.0 V 5.5 V 1.5 A 3.0 A Output Current 4.5 A 6.0 A 0.6 A 1.5 A 3.0 A Output Current 4.5 A 6.0 A 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 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Thermal Derating Curves Vin=5 V, Vo = 3.3 V Vin=5 V, Vo = 0.75 V Vin=4.5 V, Vo = 2.5 V Vin=3.3 V, Vo = 0.75 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 2.4 V-5.5 V Input 0.75 V-3.63 V/6 A Output Mechanical Outline RECOMMENDED PAD LAYOUT Pin Connections Pin 1 2 3 4 5 Function Remote On/Off Vin Ground Trim Vout PAD SIZE: MIN: 0.12"* 0.095" (3.05mm * 2.41mm) MAX: 0.135"* 0.11" (3.43mm * 2.79mm) RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. (c)2005 Bel Fuse Inc. Specifications subject to change without notice. 121305 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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