EV3120EJ-00A MPS | Alldatasheet

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1.2A, 1.1MHz Synchronous Boost Converter Evaluation Board EV3120EJ-00A Rev. 1.0 www.MonolithicPower.com 1 12/25/2013 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. The Future of Analog IC Technology

DESCRIPTION

The EV3120EJ-00A is a Boost converter evaluation board for the MP3120EJ, a synchronous, 1.1MHz fixed frequency, current mode step-up converter with output to input disconnect. It can startup from an input voltage as low as 0.8V and provides inrush current limiting as well as output short circuit protection. The output voltage also can be regulated when Uin>Uo, and the P-channel MOS is no longer act as a low impedance switch. The EV3120EJ-00A regulates the output voltage up to 3.3V from single cell AA battery without the uses of an external Schottky diode. The MP3120EJ is offered in a TSOT23-6 package. ELECTRICAL SPECIFICATION Parameter Symbol Value Units Input Voltage V IN 0.8-5 V Output Voltage V OUT 3.3 V

FEATURES

  • Up to 96% Efficiency
  • True Output Load Disconnect
  • Inrush Current Limiting and Internal Soft- Start
  • Low Voltage Start-Up: 0.8V
  • Internal Synchronous Rectifier
  • Current Mode Control with Internal Compensation
  • Short-Circuit Protection
  • 1.1MHz Fixed Frequency Switching
  • Input Range: 0.8V to 5V
  • Output Range: 2.5V to 5V
  • Tiny External Components
  • Small 6-lead ThinSOT Package APPLICATION
  • Single-cell, Two-cell and Three-cell Alkaline, NiCd or NiMH or single-cell Li Battery Consumer Products
  • MP3 Players
  • Wireless Mouse
  • Audio Recorders MPS Receivers “Monolithic Power Systems”, “MPS”, and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. EV3120EJ-00A EVALUATION BOARD Board Number MPS IC Number EV3120EJ-00A MP3120EJ 100 120 1 10 100 1000 Efficiency vs. Output Current VOUT=3.3V OUTPUT CURRENT(A) EFFICIENCY(%) Vin=1V Vin=2V Vin=4V Vin=3V

EV3120EJ-00A―1.2A, 1.1MHZ SYNCHRONOUS BOOST CONVERTER EV BOARD EV3120EJ-00A Rev. 1.0 www.MonolithicPower.com 2 12/25/2013 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. EVALUATION BOARD SCHEMATIC SW IN FB EN OUT MP3120 GND VIN ON/OFF VOUT NC NC NC NC 3.3V EV3120EJ-00A BILL OF MATERIALS Qty Ref Value Description Package Manufacturer Manufacturer P/N 1 L1 4.7uH 1.6A inductor SMD TDK SLF6028T-4R7M1R6

1 C1 10uF

Ceramic Capacitor, 25V, X7R 1210 TDK C3225X5R1E106K

1 C2 NC 0603 TDK

1 C3 150p

Ceramic Capacitor, 50V, X7R 0603 TDK C1608X7R1C151K 2 C4, C5 4.7uF Ceramic Capacitor, 16V, X7R 1206 TDK C3216X7R1C475K

1 C6 NC

1 R1 20kΩ Resistor 5% 0603 Yageo RC0603JR-0720KL

1 R2 NC

1 R3 1MΩ Resistor 1% 0603 Yageo RC0603FR-071ML

1 R4 604kΩ Resistor 1% 0603 Yageo RC0603FR-07604KL

1 R5 20kΩ Resistor 5% 0603 Yageo RC0603JR-0720KL

1 R6 NC

EV3120EJ-00A―1.2A, 1.1MHZ SYNCHRONOUS BOOST CONVERTER EV BOARD EV3120EJ-00A Rev. 1.0 www.MonolithicPower.com 3 12/25/2013 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. PRINTED CIRCUIT BOARD LAYOUT Figure1-Top layer and Top silk Figure2-Bottom Layer

EV3120EJ-00A―1.2A, 1.1MHZ SYNCHRONOUS BOOST CONVERTER EV BOARD NOTICE: The information in this document is subject to change wi thout notice. Users should warra nt and guarantee that third party Intellectual Property rights are not infringed upon w hen integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV3120EJ-00A Rev. 1.0 www.MonolithicPower.com 4 12/25/2013 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2013 MPS. All Rights Reserved. QUICK START GUIDE The output voltage of this board is set to 3.3V. The board layout accommodates most commonly used inductors and output capacitors. 1. Preset power supply to 0.8V ≤UIN≤5V; 2. Turn off the power supply; 3. Connect power supply terminals to Positive(+): IN Negative(-): GND 4. Connect Load to: Positive(+): OUT Negative(-): GND 5. Connect the EN to 5V power supply Positive(+): EN Negative(-): GND 6. Turn on the power supply; 7. The output voltage U OUT can be adjusted by changing R3. And the value of R3 can be calculated by the following formula: OUT FB FB UUR3 R4 U Where UFB=1.2V and R4=604kΩ For example, if UOUT=3.3V 3.3 1.2R3 604k 1057k 1.2 Therefore use a 1MΩ resistor. 8. The UOUT in the EVB is set to 3.3V, if other output is need the R3 can be changed.