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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-06F2AX Series * * * * * * * Non-Isolated High Efficiency High Power Density Excellent Thermal Performance Low Cost Remote On/Off Flexible Output Voltage Sequencing RoHS Compliant * * * * * * * Under-voltage Lockout (UVLO) OCP/SCP Wide Input Wide Trim Range Active Low/High (option) Able to Sink & Source Current Fixed Frequency (300 kHz) Description The Bel SRBA-06F2AX modules are a series of non-isolated dc-dc converters that deliver up to 6 A 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). These modules have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple voltages on a board. 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-06F2AL Model Number Active High SRBA-06F2A0 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 Sequencing Voltage 1 Min -0.3 V -0.3 V -0.3 V -40 C -55 C Typ - Max 5.8 V 5.5 V Vin 85 C 125 C Notes Ambient Temperature Storage Temperature Notes: All specifications are typical at 25 C unless otherwise stated. 1. SRBA-06F2AX series of modules include a sequencing feature that enables users to implement various types of output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When the sequencing feature is not used, tie the SEQ pin to Vin. 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 Min 2.4 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.75 V 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 Input Specifications Parameter Input Voltage Input Current (full load) 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 5.49 A 5.11 A 4.31 A 3.57 A 2.40 A 0.04A s 2.4V 2 Notes Vo, set Vin-0.5 V 1.8 V Tested with simulated source impedance of 1uH, 5 Hz to 20 MHz. 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) Turn on Time Overshoot at Turn on Output Capacitance ESR 1mohm ESR 10mohm Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO = 0.75 V 3.63 V 130 mV 25 uS 130 mV 25 uS di/dt=2.5 A/ uS; Vin=5 V; and with 10 uF tantalum capacitor & 1 uF/10 V TDK ceramic capacitor at output Min -2%Vo,set -3%Vo,set 0.7525 V 0A 9A 0 uF 0 uF Typ 0.4%Vo,set 0.3%Vo,set 0.4%Vo,set 0.32 A s 40 mV 10 mV 6 mS 0% 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, 50% full load Over all operating input voltages, resistive loads and temperature conditions Io=0%~50% full load; Io=50%~100% full load Vin=Vin, min to Vin, max Tref=Ta, min to Ta, max Hiccup mode Tested with 0-20 MHz, with 10 uF tantalum capacitor & 1uF/10 V ceramic capacitor at 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 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 0.8 x 0.45 x 0.25 20.32 x 11.42 x 6.36 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 0.75 V-3.63 V/6 A Output Min Typ Max Notes General Specifications Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) 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) Sequencing Voltage Sequencing Slew Rate Capability Sequencing Delay Time Tracking Accuracy Power-Up Power-Down 100 mV 200 mV 200 mV 400 mV Min -0.2 V -0.2 V 1.5 V 0V 10 mS Typ Max 0.3 V Vin, max 0.3 V Vin, max Vin 2 V/ mS Delay from Vin, min to application of voltage on SEQ pin Notes Active High: SRBA-06F2A0; Remote On/Off pin open, Unit on. Active Low: SRBA-06F2AL; Remote On/Off pin open, Unit on. Sequencing Voltage applied on SEQ pin should be higher than output voltage. 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 RTrimUp = 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 VTrimUp = 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 3.3V Module 100.0% 95.0% 90.0% 2.5V Module 100.0% 95.0% 90.0% Efficiency 4.5V 5V 5.5V Efficiency 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6A 1.5A 3.0A Output Current 4.5A 6.0A 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6A 1.5A 3.0A Output Current 4.5A 6.0A 3V 5V 5.5V Vo=3.3 V 1.8V Module 100.0% 95.0% 90.0% Efficiency 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6A 1.5A 3.0A Output Current 4.5A 6.0A Vo=2.5 V 1.5V Module 100.0% 95.0% 90.0% Efficiency 3V 5V 5.5V 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6A 1.5A 3.0A Output Current 4.5A 6.0A 3V 5V 5.5V Vo=1.8 V 1.2V Module 100.0% 95.0% 90.0% Efficiency 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6A 1.5A 3.0A Output Current 4.5A 6.0A Vo=1.5 V 0.7525V Module 100.0% 95.0% 90.0% Efficiency 3V 5V 5.5V 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.6A 1.5A 3.0A Output Current 4.5A 6.0A 3V 5V 5.5V Vo=1.2 V Vo=0.7525 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 Thermal Derating Curves Vin=5.0 V, Vo=3.3 V Vin=5.0 V, Vo=0.75 V Vin=3.3 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 Pin Connections Pin 1 2 3 Function Remote On/Off Vin+ SEQ Ground Trim Vout+ PAD SIZE: MIN: 0.012"* 0.0095" (3.05mm * 2.41mm) MAX: 0.0135"* 0.011" (3.43mm * 2.79mm) 4 5 6 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. 120905 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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