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MAX17552 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX17552 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 8 page  Evaluates: MAX17552 (µMAX) in 5V Output-Voltage Application MAX17552 5V Output Evaluation Kit (µMAX) General Description The MAX17552 5V evaluation kit (EV kit) (µMAX®) is a fully assembled and tested circuit board that demon- strates the performance of the MAX17552 60V, 100mA ultra-small, high-efficiency, synchronous step-down DC-DC converter in a 10-pin µMAX package. The EV kit operates over a wide input voltage range of 6V to 60V and provides up to 100mA load current at 5V out- put. It draws only 26µA supply current under no-load conditions (EN/UVLO connected to VIN). The EV kit is programmed to switch at a frequency of 220kHz and delivers a peak efficiency of 93% with the supplied components. The device is simple to use and easily con- figurable with minimal external components. It features cycle-by-cycle peak current-limit protection, undervoltage lockout and thermal shutdown. The EV kit comes installed with the MAX17552AUB+ in an 10-pin (3mm x 3mm), lead(Pb)-free/RoHS-compliant µMAX package. Features and Benefits ● 6V to 60V Input Voltage Range ● 5V Output, 100mA Continuous Current ● 93% Peak Efficiency ● 26µA No-Load Supply Current ● EN/UVLO for On/Off Control and Programmable Input Undervoltage Lockout ● Programmable Switching Frequency ● Internal or Programmable Soft-Start ● PFM or Forced-PWM Mode of Operation ● RESET Output ● Peak Current-Limit Protection ● Thermal Shutdown ● Proven PCB Layout ● Fully Assembled and Tested Quick Start Recommended Equipment ● MAX17552 5V EV kit (µMAX) ● 60V adjustable, 0.5A DC power supply ● Electronic load up to 100mA ● Voltmeter Procedure The EV kit is fully assembled and tested. Follow the steps below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. 1) Verify that shunts are installed on jumpers JU1 and JU2 (EN/UVLO). 2) Verify that jumper JU3 (MODE-PFM operation) is open. 3) Set the electronic load to constant-current mode, 100mA, and disable the electronic load. 4) Connect the electronic load’s positive terminal to the VOUT PCB pad. Connect the negative terminal to the GND PCB pad. 5) Connect the voltmeter across the VOUT and GND PCB pads. 6) Set the power-supply output to 24V. Disable the power supply. 7) Connect the power-supply output to the VIN PCB pad. Connect the supply ground to the GND PCB pad. 8) Turn on the power supply. 9) Enable the electronic load and verify that output voltage is 5V with respect to GND. 10) Vary the input voltage from 6V to 60V. 11) Vary the load current from 1mA to 100mA and verify that output voltage is 5V with respect to GND. Note: While performing an output short-circuit test, it is possible for the ceramic output capacitor to oscillate with the wiring inductance between the capacitor and short- circuited load, and thereby cause the absolute maximum rating of VOUT pin (-0.3V) to be exceeded. The resistor (R7) and the capacitor (C5) are included on this EV kit to protect against unintentional violation of the above men- tioned rating. In the actual system design, parasitic board or wiring inductance should be minimized and the output- voltage waveform under short-circuit operation should be verified to ensure that the absolute maximum rating of VOUT pin is not exceeded. 19-6906; Rev 1; 4/14 Ordering Information appears at end of data sheet. μMAX is a registered trademark of Maxim Integrated Products, Inc. |
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