X7AH-03C1A0 BEL | Alldatasheet
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Technical content
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 3.3V Input 0.9V-2.5V/3A Output
- Non-Isolated • OCP/SCP
- High Efficiency • Wide Range Trim
- Low Cost • Remote On/Off
- Excellent Thermal Performance • Industrial Temperature Range
- Input Under Voltage Lockout
Description
The Bel x7AH-03C1A0 modules are a series of non-isolated, step down DC/DC converters that operate from a 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 for 2.5 V output is typically 93% at full load. Typical features include remote on/off, input under voltage lockout, over current protection and short circuit protection. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Part Number Surface Mount Part Number Vertical Mount 0.9-2.5V 3.3V 3A 7.5W 93% S7AH-03C1A0 V7AH-03C1A0 2.5V 3.3V 3A 7.5W 93% S7AH-03C250 V7AH-03C250 1.8V 3.3V 3A 5.4W 89% S7AH-03C180 V7AH-03C180 1.5V 3.3V 3A 4.5W 87% S7AH-03C150 V7AH-03C150 1.2V 3.3V 3A 3.6W 84% S7AH-03C120 V7AH-03C120 0.9 V 3.3V 3A 2.7W 81% S7AH-03C090 V7AH-03C090 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 Min Typ Max Notes Input Voltage (continuous) -0.3V - 6V Output Enable Terminal Voltage -0.3V - 6V Ambient Temperature -40°C - 85°C Storage Temperature -55°C - 125°C Input Specifications Parameter Min Typ Max Notes Input Voltage 3V - 3.6V Input Current (no load) - - 110mA Input Current (full load) VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 3.1A 2.3A 1.9A 1.6A 1.2A Remote Off Input Current - 7mA 14mA x7AH-03C1A0 Series
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 3.3V Input 0.9V-2.5V/3A Output Input Specifications (continued) Parameter Min Typ Max Notes Input Reflected Ripple Current (pk-pk) - 50mA 100mA Input Reflected Ripple Current (RMS) - 15mA 25mA With simulated source impedance of 500nH, 5Hz to 20MHz; use a 270uF/6.3V capacitor with ESR=0.03 ohm max, at 100KHz. I2t Inrush Current Transient - 0.01A 2s 0.02A 2s Turn on Voltage Threshold - 2.7V - Turn off Voltage Threshold - 2.4V - Note: All specifications are typical at 25°C unless otherwise stated. Output Specifications Parameter Min Typ Max Notes Output Voltage Set Point VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 2.450V 1.764V 1.470V 1.176V 0.882V 2.5V 1.8V 1.5V 1.2V 0.9V 2.550V 1.836V 1.530V 1.224V 0.918V Test conditions: Vin=3.3V, Io= full load Line Regulation VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 1mV 1mV 1mV 1mV 1mV 5mV 5mV 5mV 5mV 5mV Load Regulation VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 1mV 1mV 1mV 1mV 1mV 5mV 5mV 5mV 5mV 5mV Regulation Over Temperature (-40°C to +85°C) VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 10mV 10mV 10mV 10mV 10mV 20mV 20mV 20mV 20mV 20mV Output Current 0A - 3A Current Limit Threshold 5A - 9A Short Circuit Surge Transient VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 0.04A2s 0.04A2s 0.04A2s 0.04A2s 0.04A2s 0.08A2s 0.08A2s 0.08A2s 0.08A2s 0.08A2s
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 3.3V Input 0.9V-2.5V/3A Output Output Specifications (continued) Parameter Min Typ Max Notes Ripple and Noise (RMS) VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 10mV 10mV 10mV 10mV 10mV 20mV 20mV 20mV 20mV 20mV Ripple and Noise (pk-pk) VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 45mV 45mV 45mV 45mV 45mV 70mV 70mV 70mV 70mV 70mV Test conditions: 0-20MHz BW; 0.1uF ceramic capacitor and 10uF tantalum capacitor at the output. Turn on Time - 7mS 15mS Overshoot at Turn on - 0% 1% Output Capacitance 0uF - 1200uF Transient Response Overshoot - 100mV 130mV 50% ~ 100% Max Load Settling Time - 30uS 60uS Overshoot - 100mV 130mV 100% ~ 50% Max Load Settling Time VO=2.5V - 30uS 60uS Overshoot - 100mV 130mV 50% ~ 100% Max Load Settling Time - 30uS 60uS Overshoot - 100mV 130mV 100% ~ 50% Max Load Settling Time VO=1.8V - 30uS 60uS Overshoot - 90mV 120mV 50% ~ 100% Max Load Settling Time - 30uS 60uS Overshoot - 90mV 120mV 100% ~ 50% Max Load Settling Time VO=1.5V - 30uS 60uS Overshoot - 90mV 120mV 50% ~ 100% Max Load Settling Time - 30uS 60uS Overshoot - 90mV 120mV 100% ~ 50% Max Load Settling Time VO=1.2V - 30uS 60uS Overshoot - 90mV 120mV 50% ~ 100% Max Load Settling Time - 30uS 60uS Overshoot - 90mV 120mV 100% ~ 50% Max Load Settling Time VO=0.9V - 30uS 60uS Test conditions: di/dt=0.5A/us, Vin=3.3V, without any external 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 3.3V Input 0.9V-2.5V/3A Output General Specifications Parameter Min Typ Max Notes Efficiency VO=2.5V VO=1.8V VO=1.5V VO=1.2V VO=0.9V 90% 86% 84% 81% 78% 93% 89% 87% 84% 81% Measured at Vin=3.3V, full load and Ta=25°C Switching Frequency 250KHz 300KHz 340KHz Output Trim Range (wide trim) 0 - 292%V O Vo=0.9V Output Trim Range (narrow trim) Vo=1.2V-2.5V Vo=0.9V 90%Vo 110%Vo 110%Vo MTBF 3,131,719 hours Calculated Per Bell Core TR-332 (IO = Nominal; Ta = 25°C) Dimensions (surface mount) Inches (L × W × H) Millimeters (L × W × H) 0.78 x 0.70 x 0.32 19.81 x 17.78 x 8.13 Dimensions (vertical) Inches (L × W × H) Millimeters (L × W × H) 0.70 x 0.308 x 0.65 17.78 x 7.82 x 16.51 Weight - 5g - Note: All specifications are typical at 25°C unless otherwise stated. Control Specifications Parameter Min Typ Max Notes Remote On/Off Signal Low (Unit Off) -0.3V - 0.3V Signal High (Unit On) 1.8V - 3.6V 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 3.3V Input 0.9V-2.5V/3A Output Output Trim Equations 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. BVV AR adjnom trimdown −−= DVV CR nomadj trimup −−= Vnom A B C D Notes 0.9 N/A N/A 3.712 33.2 Vo=0.903V when Rtrim is open Module Vout Trim GND Rtrimdown Module Vout Trim GND Rtrimup
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 3.3V Input 0.9V-2.5V/3A Output Efficiency Data MODULE 2.5V 60% 70% 80% 90% 100% 0 . 30 . 7 51 . 52 . 2 5 3 OUTPUT CURRENT EFFICIENCY 3.0V 3.3V 3.6V MODULE 1.8V 60% 70% 80% 90% 100% 0.3 0.75 1.5 2.25 3 OUTPUT CURRENT EFFICIENCY 3.0V 3.3V 3.6V MODULE 1.5V 50% 60% 70% 80% 90% 100% 0.3 0.75 1.5 2.25 3 OUTPUT CURRETN EFFICIENCY 3.0V 3.3V 3.6V MODULE 1.2V 50% 60% 70% 80% 90% 100% 0.3 0.75 1.5 2.25 3 OUTPUT CURRENT EFFICIENCY 3.0V 3.3V 3.6V MODULE 0.9V 40% 60% 80% 100% 0.3 0.75 1.5 2.25 3 OUTPUT CURRENT EFFICIENCY 3.0V 3.3V 3.6V
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 3.3V Input 0.9V-2.5V/3A Output Thermal Derating Curve
2005 Bel Fuse Inc. Specifications subject to change without notice. 011705 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 3.3V Input 0.9V-2.5V/3A Output S7AH-03C1A0 V7AH-03C1A0 Pin Connections Pin Function