NON-ISOLATED DC/DC CONVERTERS 4.5V-14V Input 0.8V-5.5V/8A Output x7AH-08E Series • PRELIMINARY Non-Isolated • Remote On/Off • Fixed Frequency • Under-voltage Lockout (UVLO) • High Efficiency • OCP/SCP • High Power Density • Wide Trim Range • Low Cost Description The Bel x7AH-08E1A0 modules are a series of non-isolated, step down DC/DC converters that operate from 4.5V to14V source. These converters are available in a range of output voltages from 0.8V to 5.5V. It is packaged in a compact, overmolded package rated at 8A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. The output is closely regulated and the efficiency for 5V output is typically 93% at full load. Part Selection Output Voltage 0.8V - 3.63V 4.5V – 5.5V Input Voltage 4.5V – 14V 8V – 14V Max. Output Current 8A 8A Max. Output Power 26.4W 44W Typical Efficiency 91% 93% Part Number Surface Mount S7AH-08E1A0 S7AH-08E500 Part Number Vertical Mount V7AH-08E1A0 V7AH-08E500 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 -40°C -55°C Typ - Max 15V 14V 85°C 125°C Notes Input Specifications Parameter Min Typ Max 8.0V 4.5V - 14V 14V Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) - 3mA 180mA 5.4A 6.7A 5.3A 3.2A 3.0A 2.8A 2.0A 100mA 10mA - Input Reflected Ripple Current (RMS) - 50mA - Notes Input Voltage Vo=4.5V-5.5V Vo=0.9V-3.63V Input Current (full load) Vo=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V With simulated source impedance of 500nH, 5Hz to 20MHz; use two 47uF/16V low ESR Tantalum capacitors. 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 4.5V-14V Input 0.8V-5.5V/8A Output Input Specifications (continued) Parameter I2t Inrush Current Transient Min - Turn-on Voltage Threshold Turn-off Voltage Threshold Typ 0.04A2s 4.3V 7.5V 4.0V 7.2V Max - Notes x7AH-08E1A0 x7AH-08E500 x7AH-08E1A0 x7AH-08E500 Output Specifications Parameter Output Voltage Set Point Min Typ Max Vo=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 4.900V 3.234V 2.450V 1.764V 1.470V 1.176V 0.882V 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 0.9V 5.100V 3.366V 2.550V 1.836V 1.530V 1.224V 0.918V Vo=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V - ±15mV ±10mV ±8mV ±5mV ±5mV ±4mV ±4mV ±25mV ±16.5mV ±12.6mV ±9mV ±9mV ±8mV ±8mV Vo=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V - ±15mV ±10mV ±8mV ±5mV ±5mV ±4mV ±4mV ±25mV ±16.5mV ±12.5mV ±9mV ±9mV ±8mV ±8mV - 30mV 50mV 0A 10A - TBD 8A 20A - Ripple and Noise (RMS) - 15mV 30mV Ripple and Noise (pk-pk) - 50mV 80mV 0uF 8mS 0% - 20mS 3% 3200uF - 120mV 50uS 120mV 50uS 180mV 80uS 180mV 80uS Line Regulation Load Regulation Regulation Over Temperature (-40°C to 85°C) Output Current Current Limit Threshold Short Circuit Surge Transient Turn on Time Overshoot at Turn on Output Capacitance Notes Test condition: Vin=12V, lout=50% full load BW = 0-20MHz; with a 1uf ceramic capacitor and a 10uF/10V Tantalum capacitor at the output. Transient Response 50% ~ 100% Max Load 100% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time All di/dt = 0.5A/uS; Vin = 12V; with a 1uF ceramic capacitor and a 10uF/10V Tantalum capacitor at the output. Note: All specifications are typical at 12V 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 4.5V-14V Input 0.8V-5.5V/8A Output General Specifications Parameter Min Typ Max Notes 89% 87% 86% 84% 82% 81% 76% 93% 91% 90% 88% 86% 85% 80% - - 330KHz - 90%VO - 403%VO x7AH-08E1A01 90%VO - 110%VO x7AH-08E5002 - - 0.2V Efficiency Vo=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V Switching Frequency Output Trim Range Remote Sense Compensation MTBF Measured at Vin=12V, full load Calculated Per Bell Core TR-332 (IO = Nominal; Ta = 25°C) TBD Dimensions (surface mount) Inches (L × W × H) Millimeters (L × W × H) Dimensions (vertical) Inches (L × W × H) Millimeters (L × W × H) Weight 0.78 x 0.7 x 0.32 19.81 x 17.78 x 8.13 0.7 x 0.308 x 0.65 17.78 x 7.82 x 16.51 - 6g - Notes: All specifications are typical at 25°C unless otherwise stated. 1. The output voltage is 0.9V at trim pin is open. 2. The output voltage is 5.0V at trim pin is open. Control Specifications Parameter Min Typ Max Signal Low (Unit Off) -0.3V - 0.8V Signal High (Unit On) 2.4V - 14V Notes Remote On/Off Remote on/off pin open, unit on. 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 4.5V-14V Input 0.8V-5.5V/8A Output Output Trim Equations 1) x7AH-08E1A0 Equations for calculating the trim resistor (in kΩ) 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. Vout Rtrim − down 1.076 = − 5.631 Vo − Vadj Rtrim-down Module Trim GND Rtrim−up 3.759 = − 0.261 Vadj − Vo Vout Module Trim Rtrim-up GND Note: Output voltage Vo=0.9V when Rtrim_up is not connected. 2) x7AH-08E500 Equations for calculating the trim resistor (in kΩ) 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. Vout Rtrim− down = 23.099 − 5.631 Vo − Vadj Rtrim-down Module Trim GND Vout Rtrim−up 3.759 = − 0.261 Vadj − Vo Module Trim Rtrim-up GND Note: Output voltage Vo=5V when Rtrim_up is not connected. 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 4.5V-14V Input 0.8V-5.5V/8A Output Efficiency Data MODULE 2.5V 105.0% 100.0% 95.0% 90.0% 85.0% 80.0% 75.0% 4.5V 8.0V 12.0V 14.0V EFFICIENCY EFFICIENCY MODULE 3.3V 85.0% 75.0% 65.0% 0.8 2 4 6 8 0.8 6 MODULE 1.8V MODULE 1.5V 85.0% 75.0% EFFICIENCY 4.5V 8.0V 12.0V 14.0V 65.0% 2 4 6 8 8 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 4.5V 8.0V 12.0V 14.0V 0.8 OUTPUT CURRENT(A) 2 4 6 8 OUTPUT CURRENT(A) MODULE 0.9V MODULE 1.2V 100.0% 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 4.5V 8.0V 12.0V 14.0V EFFICIENCY EFFICIENCY 4 OUTPUT CURRENT(A) 95.0% 0.8 2 OUTPUT CURRENT(A) 105.0% EFFICIENCY 4.5V 8.0V 12.0V 14.0V 95.0% 4.5V 8.0V 12.0V 14.0V 90.0% 80.0% 70.0% 60.0% 0.8 2 4 6 OUTPUT CURRENT(A) 8 0.8 2 4 6 8 OUTPUT CURRENT(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 4.5V-14V Input 0.8V-5.5V/8A Output Thermal Derating Curves Vo=0.9V Vo=1.8V Vo=3.3V 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 4.5V-14V Input 0.8V-5.5V/8A Output S7AH-08E bel Pin Connections Pin Function 1 Remote On/Off (option) 2 Vin 3 Ground 4 Vout 5 Trim (option) 6 Remote Sense (option) 7 N/A V7AH-08E Pin Connections bel bel Pin Function 1 Remote On/Off (option) 2 Vin 3 Ground 4 Vout 5 Trim (option) ©2005 Bel Fuse Inc. Specifications subject to change without notice. 030405 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