NON-ISOLATED DC/DC CONVERTERS 8.3 V-14 V Input 0.75 V-5.0 V/6 A Output SRBA-06A2Ax Series RoHS Compliant • Non-Isolated • Under-Voltage Lockout (UVLO) • High Efficiency • OCP/SCP • High Power Density • Wide Input • Fixed Frequency • Wide Trim Range • Remote On/Off • Flexible Output Voltage Sequencing • Active Low/High Description The Bel SRBA-06A2Ax modules are a series of non-isolated dc/dc converters that deliver up to 6 A of output current with full load efficiency of 92% at 5.0 V output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 V to 5.0 V over a wide range of input voltage (8.3 V-14 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 current protection, wide input, and programmable output voltage. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number Active Low Model Number Active High 0.75 V - 5.0 V 8.3 V - 14 V 6A 30.0 W 92% SRBA-06A2AL SRBA-06A2A0 Note: Add “G” suffix at the end of the model number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Min Typ Max Input Voltage (continuous) -0.3 V - 15 V Output Enable Terminal Voltage -0.3 V - 15 V 1 -0.3 V - Vin Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C Sequencing Voltage Notes Notes: All specifications are typical at 25 °C unless otherwise stated. 1. SRBA-06A2Ax 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 8.3 V-14 V Input 0.75 V-5.0 V/6 A Output Input Specifications Parameter Input Voltage Input Current (full load) Min 8.3 V Typ 12 V Max 14 V Notes Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.2 V Vo=0.75 V - 2.75 A 1.85 A 1.45 A 1.05 A 0.75 A 0.55 A 4.0 A 2.8 A 2.2 A 1.6 A 1.1 A 0.8 A Vo=5.0 V Vo=0.75 V Remote Off Input Current - 1 mA 100 mA 20 mA 2 mA Input Reflected Ripple Current (pk-pk) - 120 mA - Input Reflected Ripple Current (rms) - 40 mA - Input Current (no load) 2 2 Tested with two 100 uF/25 V tan input capacitors & simulated source impedance of 1 uH, 5 Hz to 20 MHz. I t Inrush Current Transient - 0.002 A s 0.02 A2s Turn-on Voltage Threshold - 8.1 V 8.2 V Turn-off Voltage Threshold - 7.5 V 8.0 V Notes: All specifications are typical at 25 °C unless otherwise stated. Output Specifications Parameter Output Voltage Set Point Min -2%Vo,set Typ - Max 2%Vo,set Output Voltage Set Point -2.5%Vo,set - 3.5%Vo,set 0.7525 V - 5.0 V Adjustment Range Selected by External Resistor or Voltage Notes Vin=12 V, full load Over all operating input voltages, resistive loads and temperature conditions Load Regulation - 0.4%Vo,set - Io=Io, min to Io, max Line Regulation Regulation Over Temperature (-40 °C to +85 °C) Output Current - 0.3%Vo,set - Vin=Vin, min to Vin, max - 0.5%Vo,set - Tref=Ta, min to Ta, max Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (pk-pk) Vo=0.75 V-3.63 V Ripple and Noise (rms) Vo=0.75 V-3.63 V Ripple and Noise (pk-pk) Vo=5.0 V Ripple and Noise (rms) Vo=5.0 V Turn on Time Overshoot at Turn on Output Capacitance ESR ≥ 1 mohm ESR ≥ 10 mohm 0A - 6A 7.2 A - 18 A - 0.25 A s - - 50 mV 75 mV - 15 mV 30 mV - 75 mV 100 mV - 30 mV 8 mS 40 mV 10 mS - 0% 3% 0 uF 0 uF - 1000 uF 3000 uF 2 Tested with 0-20 MHz, with 10 uF/10 V tantalum capacitor & 1 uF/10 V TDK ceramic capacitor at the output. 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 8.3 V-14 V Input 0.75 V-5.0 V/6 A Output Output Specifications (Continued) Parameter Min Typ Max Notes di/dt=2.5 A/uS; Vin=12 V; and with 10 uF/10 V tantalum capacitor & 1 uF/ 10 V ceramic capacitor at the output. Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load VO = 0.75 - 5 V Settling Time - 200 mV - - 50 uS - - 200 mV - - 50 uS - Note: All specifications are typical at nominal input (Vin=12 V), full load at 25 °C unless otherwise stated. General Specifications Parameter Min Typ Max Notes 90% 87% 85% 83% 79% 71% 92% 89% 88% 86% 82% 74% - 250 kHz 300 kHz 350 kHz Over Temperature Shutdown - 135 °C - Output Trim Range (wide trim) 0.7525 V - 5V Efficiency Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.2 V Vo=0.75 V Switching Frequency MTBF Measured at Vin=12 V, full load Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) 3,079,469 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight - 0.8 x 0.45 x 0.251 20.32 x 11.42 x 6.38 3g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Signal Low (Unit Off) Min -0.3 V Typ - Max 0.4 V Signal High (Unit On) 2.5 V - 14 V Signal Low (Unit On) -0.3 V - 0.4 V Signal High (Unit Off) 2.5 V - 14 V Sequencing Voltage 0V - Vin - - 2 V/mS 10 mS - - - 100 mV 200 mV 200 mV 400 mV Sequencing Slew Rate Capability Sequencing Delay Time Notes SRBA-06A2A0; Remote On/Off pin open, Unit on. SRBA-06A2AL; Remote On/Off pin open, Unit on. Sequencing Voltage applied on SEQ pin should be higher than output voltage. Delay from Vin, min to application of voltage on SEQ pin Tracking Accuracy Power-Up Power-Down 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 8.3 V-14 V Input 0.75 V-5.0 V/6 A Output Output Trim Equations Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The Trim Up resistor should be connected between the Trim pin and Ground. Vout Rtrim 10.507 = −1 Vadj − 0.7525 Module Trim Rtrim GND 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 − 0.0667 × (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 8.3 V-14 V Input 0.75 V-5.0 V/6 A Output Efficiency Data MODULE 3.3V MODULE 5.0V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 95.0% 8.3V 12.0V 14.0V 90.0% 85.0% 80.0% EFFICIENCY EFFICIENCY 100.0% 75.0% 1A 2A 3A 4A 5A 6A 8.3V 12.0V 14.0V 1A OUTPUT CURRENT 2A 4A 5A EFFICIENCY EFFICIENCY 8.3V 12.0V 14.0V 3A 6A 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 8.3V 12.0V 14.0V 1A 6A 2A 3A 4A 5A 6A OUTPUT CURRENT OUTPUT CURRENT MODULE 1.2V MODULE 0.75V 90.0% 90.0% 80.0% 8.3V 12.0V 14.0V 70.0% 60.0% 50.0% EFFICIENCY EFFICIENCY 5A MODULE 1.8V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 2A 4A OUTPUT CURRENT MODULE 2.5V 1A 3A 80.0% 8.3V 12.0V 14.0V 70.0% 60.0% 50.0% 1A 2A 3A 4A 5A OUTPUT CURRENT 6A 1A 2A 3A 4A 5A 6A OUTPUT CURRENT 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 8.3 V-14 V Input 0.75 V-5.0 V/6 A Output Thermal Derating Curves Vin=12 V, Vo=0.75 V Vin=12 V, Vo=2.5 V Vin=12 V, Vo=5.0 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 8.3 V-14 V Input 0.75 V-5.0 V/6 A Output Mechanical Outline Pin Connections Pin Function 1 Remote On/Off 2 Vin+ 3 SEQ 4 Ground 5 Trim 6 Vout+ RECOMMENDED PAD LAYOUT 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. ©2005 Bel Fuse Inc. Specifications subject to change without notice. 120205 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