NON-ISOLATED DC/DC CONVERTERS 3.0 V-5.5 V Input 0.9 V-3.3 V/3 A Output x7AH-03F1A0 • Non-Isolated • Remote On/Off • High Efficiency • Input Under Voltage Lockout • Fixed Frequency (300 kHz) • OCP/SCP • Low Cost • Wide Range Trim Description The Bel x7AH-03F1A0 module is a non-isolated, step down dc/dc converter that operates from 3.0 V to 5.5 V source. This converter is available in a range of output voltages from 0.9 V to 3.3 V. It is packaged in a compact, overmolded package rated at 3 A. Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very low profile. The efficiency of 3.3 V module is typically 92% at 5 V input at full load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit protection. Part Selection Output Voltage 0.9 V - 3.3 V Input Voltage 3.0 V - 5.5 V Max. Output Current 3A Max. Output Power 10 W Typical Efficiency 92% Part Number Surface Mount S7AH-03F1A0 Part Number Vertical Mount V7AH-03F1A0 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) Min -0.3 V Typ - Max 6V Output Enable Terminal Voltage -0.3 V - 6V Ambient Temperature -40 °C - 85 °C Storage Temperature -40 °C - 125 °C Notes Input Specifications Parameter Min Typ Max 4.5 V 3.6 V 3.0 V - - 5.5 V 5.5 V 5.5 V 70 mA Remote Off Input Current - 5 mA 2.5 A 2.4 A 2.2 A 1.9 A 1.6 A 1.3 A 10 mA Input Reflected Ripple Current (pk-pk) - 75 mA - Input Reflected Ripple Current (rms) - 25 mA - Notes Input Voltage VO=3.3 V VO=2.5 V VO=0.9 V-1.8 V Input Current (no load) Input Current (full load) VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Vo=0.9 V Tested with simulated source impedance of 500 nH, 5 Hz to 20 MHz and two 270 uF/16 V Oscon caps with ESR=0.018 ohm max at 100 kHz 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 3.0 V-5.5 V Input 0.9 V-3.3 V/3 A Output Input Specifications (continued) Parameter 2 I t Inrush Current Transient Turn on Voltage Threshold Turn off Voltage Threshold Min 2.2 V Typ 2 0.004 A s 2.4 V Max 2 0.008 A s 2.9 V - Notes Only for 0.9 V-1.8 V output modules. Note: All specifications are typical at nominal input (5 V), full load at 25 °C unless otherwise stated. Output Specifications Parameter Output Voltage Set Point Min Typ Max VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V 3.217 V 2.437 V 1.755 V 1.462 V 1.170 V 0.877 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V 0.9 V 3.383 V 2.563 V 1.845 V 1.538 V 1.230 V 0.923 V VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V - 10 mV 8 mV 6 mV 5 mV 4 mV 3 mV 20 mV 16 mV 12 mV 10 mV 8 mV 6 mV VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V Regulation Over Temperature(-40 °C to +85 °C) VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V VO=0.9 V Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (rms) VO=1.2 V-3.3 V VO=0.9 V Ripple and Noise (pk-pk) VO=1.2 V-3.3 V VO=0.9 V Turn on Time Overshoot at Turn on Output Capacitance Transient Response Overshoot 50% ~ 100% Max Load Settling Time All Overshoot 100% ~ 50% Max Load Settling Time - 17 mV 13 mV 9 mV 8mV 6 mV 5 mV 33 mV 25 mV 18 mV 15 mV 12 mV 9 mV 0A 5A - 72 mV 54 mV 39 mV 32 mV 26 mV 19 mV 2 0.022 A s 97 mV 72 mV 52 mV 43 mV 40 mV 40 mV 3A 12 A 2 0.044 A s - 15 mV 10 mV 25 mV 20 mV 0 uF 50 mV 40 mV 7 mS 0% - 70 mV 60 mV 12 mS 3% 1200 uF - 150 mV 20 uS 150 mV 20 uS 200 mV 40 uS 200 mV 40 uS Notes Test conditions: Vin=5 V, Io=50% full load Line Regulation Load Regulation Test condition: 0-20 MHz BW Test conditions: di/dt = 0.5 A/uS; Vin = 5V 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 3.0 V-5.5 V Input 0.9 V-3.3 V/3 A Output General Specifications Parameter Min Typ Max Notes 88% 86% 83% 80% 77% 75% 92% 90% 87% 84% 81% 79% - 250 kHz 300 kHz 360 kHz - - 403% Vo 90% Vo - - 110% Vo 110% Vo Efficiency VO=3.3 V VO=2.5 V VO=1.8 V VO=1.5 V VO=1.2 V Vo=0.9 V Switching Frequency Output Trim Range (wide trim) Output Trim Range (narrow trim) VO=1.2 V-3.3 V VO=0.9 V MTBF Measured at Vin=5 V, full load and Ta=25 °C Calculated Per Bell Core TR-332 (Vin= 5 V; Vo=3.3 V; IO = 2.4 A; Ta = 25 °C) 7,800,000 hours Dimensions (surface mount) Inches (L × W × H) Millimeters (L × W × H) Dimensions (vertical) Inches (L × W × H) Millimeters (L × W × H) Weight Vo=0.9 V 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 - 5g - Control Specifications Parameter Remote On/Off Min Typ Max Signal Low (Unit Off) -0.3 V - 0.8 V Signal High (Unit On) 2.8 V - 6V 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 (Vo) are shown below. 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− up = 3.712 −1 Vadj − Vo Module Trim Rtrim-up GND Note: Output voltage Vo=0.902V when Ttrim-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 3.0 V-5.5 V Input 0.9 V-3.3 V/3 A Output Efficiency Data MODULE 3.3V EFFICIENCY 100.0% 95.0% 90.0% 4.5V 5.0V 5.5V 85.0% 80.0% 75.0% 0.30 0.75 1.50 2.25 3.00 OUTPUT CURRENT (A) MODULE 1.8V 95.0% EFFICIENCY 90.0% 3.0V 3.3V 5.0V 5.5V 85.0% 80.0% 75.0% 70.0% 65.0% 0.30 0.75 1.50 2.25 3.00 OUTPUT CURRENT (A) MODULE 0.9V EFFICIENCY 90.0% 85.0% 80.0% 3.0V 3.3V 5.0V 5.5V 75.0% 70.0% 65.0% 60.0% 0.30 0.75 1.50 2.25 3.00 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 3.0 V-5.5 V Input 0.9 V-3.3 V/3 A Output Thermal Derating Curve x7AH-03F1A0 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 3.0 V-5.5 V Input 0.9 V-3.3 V/3 A Output S7AH-03F1A0 bel Pin Connections Pin Function 1 Remote On/Off 2 Vin 3 Ground 4 Vout 5 Trim 6 N/A 7 N/A V7AH-03F1A0 bel bel Pin Connections Pin Function 1 Remote On/Off 2 Vin 3 Ground 4 Vout 5 Trim 2005 Bel Fuse Inc. Specifications subject to change without notice. 040605 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