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| NON-ISOLATED DC/DC CONVERTER 5V Input Vref/2 / 5A Output X7AH-05BT50 * * * Non-Isolated Fixed frequency (300kHz) Under-voltage lockout (UVLO) * * * Remote On/Off OCP/SCP Low Profile Package (7.82mm) Description The Bel X7AH-05BT50 is part of the low cost non-isolated DC/DC converter series. The converter is designed specifically to provide bus termination voltage in application such as DDR (double data rate) memory where the bus termination voltage must closely track the I/O bus voltage. The converter accepts a reference input and programs its output voltage to 50% of the reference. The modules use a SMD or vertical mount package for ease of layout and space savings. Part Selection Output Voltage Vref/2 Input Voltage 5V Max. Output Current 5A Max. Output Power 6.25W Typical Efficiency 82% Part Number Surface Mount S7AH-05BT50 Part Number Vertical Mount V7AH-05BT50 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 -0.3V -0.3V -40C -55C Typ Max 6V 6V 85C 125C Notes Input Specifications Parameter Input Voltage Input Current Input Current (No load) Remote Off Input Current Input Reflected Ripple Current (RMS) Input Reflected Ripple Current (pk-pk) I t Inrush Current Transient Turn-on Voltage Threshold Turn Off Voltage threshold 2 Min 4.5V 4.19V - Typ 5.0V 9mA 30mA 110mA 0.02A s 4.3V 3.8V 2 Max 5.5V 2A 60mA 15mA 50mA 140mA 0.05A s 4.5V 4.49V 2 Notes Measured with simulated source impedance of 500nH, 5Hz to 20MHz; & one 270uF/16V capacitor with ESR = 0.018 ohm max. at 100KHz Notes: 1. All tests are measured at Vref = 2.5V. 2. All specifications are typical at 25C 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 CONVERTER 5V Input Vref/2 / 5A Output Output Specifications Parameter Output Voltage Set Point Load Regulation Line Regulation Regulation Over Temperature (-40C to +85C) Output Current Output Current Threshold Short Circuit Surge Transient Ripple and Noise (RMS) Ripple and Noise (pk-pk) Turn On Time Overshoot at Turn on Output Capacitance Min 0.99* (Vref/2) V 0A 6.5A Typ Vref/2 3mV 1mV 15mV 2 0.04A s 12mV 45mV 12mS 0% Max 1.01* (Vref/2) V 6mV 3mV 20mV 5A 12.5A 2 0.08A s 20mV 90mV 20mS 5% 2200uF Tested at: 0-20MHz BW; with 1uF ceramic capacitor at the output Notes Vin=5V, Iout=full load. Notes: 1. All specifications are typical at nominal input, full load at 25C unless otherwise stated. 2. The modules track the transient response of the reference input. See the figure in TR data on Page 3. 3. The turn-off undershoot of the module is below 100mV if a 220uF aluminum cap is added at the output. 4. All tests are measured at Vref=2.5V. General Specifications Parameter Efficiency Switching Frequency MTBF Dimensions (surface mount) Inches (L x W Millimeters (L x W Dimensions (vertical) Inches (L x W Millimeters (L x W Weight x H) x H) x H) x H) Min 79% 250KHz Typ 82% 300KHz 8,841,119 hours 0.78 x 0.7 x 0.32 19.812 x 17.78 x 8.128 0.7 x 0.308 x 0.65 17.78 x 7.82 x 16.51 4.7g Max 340KHz Calculated Per Bell Core TR-332 (IO =4A, Vin=5V, Vref=2.5V; Ta = 25C) Notes Measured at Vin=5V, full load - Note: All specifications are typical at nominal input, full load at 25C unless otherwise stated. All tests are measured at Vref=2.5V Control Specifications Parameter Min -0.3V -0.3V 3.15 V(Vin=4.5V) 3.85 V(Vin=5.5V) Typ Max 1.35V (Vin=4.5V) 1.65V (Vin=5.5V) 5.5V 5.5V Notes Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Remote on/off pin open, unit on Note: All tests are measured at Vref=2.5V. 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 CONVERTER 5V Input Vref/2 / 5A Output Transient Response: track the transient response of the reference input. No External Load Capacitance. Channel 1: Transient response tracking. Channel 2: Transient response of the reference input. Ta = 25C 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 CONVERTER 5V Input Vref/2 / 5A Output Efficiency Data 87.0% 86.0% 85.0% 84.0% 83.0% 82.0% 81.0% 80.0% 79.0% 1 2 3 4 5 4.5V 5.0V 5.5V Efficiency is tested at Vref=2.5V. Thermal Derating Curves V7AH-05BT50 S7AH-05BT50 Test Condition: Derating curves are tested at nominal input voltage and Vref=2.5V. 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 CONVERTER 5V Input Vref/2 / 5A Output S7AH-05BT50 bel Pin Connections Pin 1 2 3 4 5 6 7 Function Remote On/Off (option) Vin Ground Vout Vref N/A N/A V7AH-05BT50 bel bel Pin Connections Pin 1 2 3 4 5 Function Remote On/Off (option) Vin Ground Vout Vref 2003 Bel Fuse Inc. Specifications subject to change without notice. 112504 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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