NON-ISOLATED DC/DC CONVERTERS 4.5V-32V Input 1.2V-5.0V/3A Output x7AH-03H Series • Non-Isolated • Remote On/Off • High Efficiency • Input Under Voltage Lockout • High Power Density • OCP/SCP • Excellent Thermal Performance • Low Cost Description The Bel x7AH-03Hxx0 is part of the low cost non-isolated DC/DC power converter series. It is packaged in a compact, overmolded package rated at 3A. 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 of 3.3V output is typically 90% at full load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit protection. Part Selection Output Voltage 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V Input Voltage 8.0V – 32V 4.9V – 32V 4.5V –32V 4.5V –32V 4.5V – 32V 4.5V – 32V Max. Output Current 3A 3A 3A 3A 3A 3A Max. Output Power 15W 10W 7.5W 5.4W 4.5W 3.6W Typical Efficiency 92% 90% 88% 85% 83% 81% Part Number Surface Mount S7AH-03H500 S7AH-03H330 S7AH-03H250 S7AH-03H180 S7AH-03H150 S7AH-03H120 Part Number Vertical Mount V7AH-03H500 V7AH-03H330 V7AH-03H250 V7AH-03H180 V7AH-03H150 V7AH-03H120 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 -40°C Typ - Max 34V 12V 85°C 125°C Notes Input Specifications Parameter Input Voltage Input Current (no load) Input Current (full load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (RMS) I2t Inrush Current Transient Turn on Voltage Threshold 1 Turn off Voltage Threshold 2 Min 4.5V - Typ 30mA 4mA Max 32V 3A - - 200mA 400mA - 100mA 150mA - 2 0.02A s 4.1V 3.3V 0.1A2s 4.5V 4.0V Notes See “Part Selection” for more details. Tested with simulated source impedance of 500nH, 5Hz to 20MHz and two 100uF/50V electrolytic capacitors and a 3.3uF/50V ceramic capacitor at the input. Notes: 1. The max Turn on Voltage threshold of the 3.3V & 5.0V output module will be relaxed to 4.9V & 8.0V respectively. 2. The max Turn off Voltage threshold of the 3.3V output module will be relaxed to 4.5V. The 5.0V output module does not have such function. 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-32V Input 1.2V-5.0V/3A Output Output Specifications Parameter Output Voltage Set Point Min Typ Max 4.900V 3.234V 2.450V 1.764V 1.470V 1.176V 5.0V 3.3V 2.5V 1.8V 1.5V 1.2V 5.100V 3.366V 2.550V 1.836V 1.530V 1.224V VO=5.0V VO=1.2-3.3V - ±10mV ±5mV ±15mV ±10mV VO=5.0V VO=1.2-3.3V - ±10mV ±5mV ±15mV ±10mV - 30mV 50mV 0A - 3A 3.3A - 9A VO=1.2V-5.0V - 0.02A2s 0.1A2s VO=1.2V-5.0V - 25mV 50mV VO=1.2V-5.0V - 60mV 100mV Turn on Time - 15mS 50mS Overshoot at Turn on - 2% 5% 220uF - 1200uF - 150mV 200mV VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V Vo=1.2V Line Regulation Load Regulation Regulation Over Temperature (-40°C to +85°C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (RMS) Ripple and Noise (pk-pk) Output Capacitance Notes Test conditions: Vin=12V, Io=50% full load Tested with 0-20MHz BW, with a 220uF tantalum capacitor at the output. Transient Response 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load 50% ~ 100% Max Load 100% ~ 50% Max Load Overshoot - 100uS 150uS - 150mV 200mV Settling Time - 100uS 150uS Overshoot - 130mV 180mV Settling Time - 100uS 150uS - 130mV 180mV Settling Time - 100uS 150uS Overshoot - 100mV 150mV Settling Time - 50uS 100uS - 100mV 150mV Settling Time - 50uS 100uS Overshoot - 90mV 140mV Settling Time - 40uS 80uS - 90mV 140mV - 40uS 80uS Settling Time Overshoot Overshoot Overshoot Overshoot Settling Time VO=5.0V VO=3.3V VO=1.8V 2.5V VO=1.2V 1.5V Test conditions: di/dt = 0.5A/uS; Vin = 12V; with a 220uF Tantalum capacitor at the 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 4.5V-32V Input 1.2V-5.0V/3A Output General Specifications Parameter Min Typ 89% 87% 85% 82% 80% 78% 200KHz 90%Vo 92% 90% 88% 85% 83% 81% 300KHz - Max Notes Efficiency VO=5.0V VO=3.3V VO=2.5V VO=1.8V VO=1.5V Vo=1.2V Switching Frequency Output Trim Range (narrow trim) - Measured at Vin=12V, full load and Ta=25°C 400KHz 110%Vo Calculated Per Bell Core TR-332 (IO = Nominal; Ta = 25°C) 8,120,000 hours MTBF 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 0.70 x 0.32 19.81 x 17.78 x 8.13 - 0.70 x 0.308 x 0.65 17.78 x 7.82 x 16.51 5.1g - Control Specifications Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Min Typ Max -0.3V 2.8V - 1V 12V Notes Remote on/off pin open, unit on. Output Trim Equations 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. Rtrimdown A = −B Vnom − Vadj Vout Rtrimdown Module Trim GND Rtrimup = Vadj C −D − Vnom Vout Module Trim Rtrimup GND Vnom A B C D 5.0 3.3 2.5 1.8 1.5 1.2 61.850 53.840 9.556 3.849 3.102 1.794 29.400 61.700 15.620 13.830 14.420 10.910 11.760 17.200 4.496 3.064 3.536 3.536 14.700 40.200 10.000 10.000 10.000 6.490 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-32V Input 1.2V-5.0V/3A Output Efficiency Data 5.0V Module 3.3V Module 100.0% 100.0% 90.0% 90.0% 8V 70.0% 12V 60.0% 24V 50.0% 32V 80.0% Efficiency Efficiency 80.0% 40.0% 12V 60.0% 24V 50.0% 32V 40.0% 30.0% 30.0% 0.3 0.8 1.5 2.3 3.0 0.3 0.8 Output Current 2.5V Module 1.8V Module 2.3 3.0 100.0% 90.0% 90.0% 80.0% 80.0% 70.0% 12V 60.0% 24V 50.0% 32V Efficiency 4.5V 40.0% 4.5V 70.0% 12V 60.0% 24V 50.0% 32V 40.0% 30.0% 0.3 0.8 1.5 2.3 30.0% 3.0 0.3 0.8 Output Current 1.5 2.3 3.0 Output Current 1.2V Module 1.5V Module 100.0% 100.0% 90.0% 90.0% 80.0% 4.5V 70.0% 12V 60.0% 24V 50.0% 32V 40.0% Efficiency Efficiency 1.5 Output Current 100.0% Efficiency 4.9V 70.0% 80.0% 4.5V 70.0% 12V 60.0% 24V 32V 50.0% 40.0% 30.0% 30.0% 0.3 0.8 1.5 Output Current 2.3 3.0 0.3 0.8 1.5 2.3 3.0 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 4.5V-32V Input 1.2V-5.0V/3A Output Thermal Derating Curve Vin=24V 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-32V Input 1.2V-5.0V/3A Output bel Pin Connections Pin Function 1 Remote On/Off (option) 2 Vin 3 Ground 4 Vout 5 Trim (option) 6 N/A 7 N/A Pin Connections bel bel Pin Function 1 Remote On/Off (option) 2 Vin 3 Ground 4 Vout 5 Trim (option) ©2004 Bel Fuse Inc. Specifications subject to change without notice. 121704 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