SRDB-04C500 BEL | Alldatasheet
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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
3.3 V Input 5 V/4 A Output
- Non-Isolated • Remote Sense
- High Efficiency • Allows Burst Mode Operation
- Fixed Frequency (530 kHz) at Low Load Currents
- Low Profile Package (8.5 mm)
Description
The SRDB-04C500 is part of the low cost non-isolated dc/dc series. The module uses a DIP package for ease of layout and space savings, with a low profile of 8.5mm. The output is closely regulated and the efficiency is typically 92% at full load. The unit is designed to be highly efficient and cost-effective. Features include remote sense, output voltage adjustment and burst mode at light load. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number 5 V 3.3 V 4 A 20 W 92% SRDB-04C500 Note: Add “R” suffix at the end of the model number to indicate “Reel Packaging”, and “G” for “Tray Packaging”. Absolute Maximum Ratings Parameter Min Typ Max Notes Input Voltage (continuous) 2.8 V - 4 V Ambient Temperature 0 °C - 70 °C Storage Temperature -40 °C - 125 °C Input Specifications Parameter Min Typ Max Notes Input Voltage 3 V - 3.6 V Input Current (full load) - - 8.5 A Input Reflected Ripple Current (pk-pk) - 120 mA 200 mA Input Reflected Ripple Current (rms) - 25 mA 50 mA Tested with simulated source impedance of 500 nH, 5 Hz to 20 MHz; 270 uF/16 V capacitors with ESR=0.018 ohm max. at 100KHz I2t Inrush Current Transient - 0.02 A 2s 0.05 A 2s Turn-on Voltage Threshold - 2.8 V 2.9 V Note: All specifications are typical at 25 °C unless otherwise stated. SRDB-04C500 RoHS Compliant
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 Parameter Min Typ Max Notes Output Voltage Set Point 4.85 V 5.0 V 5.15 V Vin=3.3 V, full load Line Regulation - 20 mV 40 mV Load Regulation - 30 mV 60 mV Regulation Over Temperature (0 °C to 70 °C) - 20 mV 30 mV Ripple and Noise (rms) 1 - 15 mV 25 mV - 100 mV - Burst Mode; Io=0 A Ripple and Noise (pk-pk) 1 - 70 mV 100 mV Fixed frequency; Io=4 A Output Current 0 A - 4 A Rise Time - 30 mS 50 mS Overshoot at Turn on - 0% 5% Output Capacitance 0 uF 2000 uF Transient Response Overshoot - 100 mV 150 mV 50% ~ 100% Max Load Settling Time - 60 uS 120 uS Overshoot - 100 mV 150 mV 100% ~ 50% Max Load Settling Time VO=5 V - 60 uS 120 uS Tested at di/dt=0.5 A/us, Vin=3.3 Vdc, without external load capacitance Notes: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated. 1. Test condition of the output ripple and noise: 0-20 MHz BW; recommend a 220 uF capacitor at output if the module operates at bust mode (light load). General Specifications Parameter Min Typ Max Notes Efficiency 88% 92% - Vin=3.3 V, full load Switching Frequency 460 kHz 530 kHz 630 kHz Output Voltage Trim Range 90% Vo - 110% Vo Remote Sense Compensation - - 10% Typical at nominal input, full load at 25 °C unless otherwise stated. MTBF 7,600,000 hours Calculated Per Bell Core SR-332 (Vin= 3.3 V; Vo=5 V; IO = 3.2 A; Ta = 25 °C) Dimensions Inches millimeters 1.22 x 0.827 x 0.345 30.99 x 21.0 x 8.76 Weight - 11 g - 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 Equations for calculating the trim resistor (in k Ω) 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. 79.8109.12 −−=− adjnom downtrim VVR 62.582.3 −−=− nomadj uptrim VVR Note: For Trim Up, the output voltage Vnom = 5.025 V Efficiency Data 70.0% 75.0% 80.0% 85.0% 90.0% 95.0% Output Current (A) Efficiency 3.0 V 3.3 V 3.6 V Vo=5 V Vout Trim GND Rtrim-down Module Vout Trim GND Rtrim- up Module
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
©2005 Bel Fuse Inc. Specifications subject to change without notice. 091905 CORPORATE FAR EAST EUROPE Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd.
206 Van Vorst Street 8F/ 8 Luk Hop Street Preston Technology Management Centre
Jersey City, NJ 07302 San Po Kong Marsh Lane, Suite G7, Preston Tel 201-432-0463 Kowloon, Hong Kong Lancashire, PR1 8UD, U.K. Fax 201-432-9542 Tel 852-2328-5515 Tel 44-1772-556601 www.belfuse.com Fax 852-2352-3706 Fax 44-1772-888366 www.belfuse.com www.belfuse.com NON-ISOLATED DC/DC CONVERTERS 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. Pin Connections Pin Function