EV3212DQ-00A MPS | Alldatasheet

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1.3A, 1MHz Micropower Step-Up Converter EV3212DQ-00A Rev. 1.0 www.MonolithicPower.com 1 9/1/2009 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. The Future of Analog IC Technology

DESCRIPTION

The EV3212DQ-00A is the evaluation board of MP3212, a constant frequency, 10-pin QFN current mode step-up converter intended for small, low power applications. The EV3212DQ operates from an input voltage as low as 2.3V and can generate as high as 28V output voltage and up to 100mA output current. The EV3212 features PFM at light loads for high efficiency. The EV3212 includes under- voltage lockout, output over-voltage protection, current limiting, and thermal overload protection to prevent damage in the event of an output overload. ELECTRICAL SPECIFICATIONS Parameter Symbol Value Units Supply Voltage V IN 2.3 to 5.5 V Output Current I OUT 0 to 100 mA

FEATURES

  • 180µA Quiescent Current
  • 2.3V to 5.5V Input Voltage
  • 1MHz Fixed Switching Frequency
  • 1.3A Switch Current Limit
  • Input-output disconnect
  • Up to 28V Output Voltage
  • Automatic Pulse Frequency Modulation Mode at Light Loads
  • Over 85% Efficiency
  • Available in a 10-Pin QFN Package

APPLICATIONS

  • OLED Biasing
  • LCD Bias Supply
  • White LED Driver
  • PDAs
  • Digital Still Cameras “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. EV3212DQ-00A EVALUATION BOARD Board Number MPS IC Number EV3212DQ-00A MP3212DQ Efficiency vs. Load Current 0 0.05 0.1 0.15 0.2 LOAD CURRENT (A) EFFIICENCY (%) Vin=2.7V Vin=3.6V Vin=4.2V

EV3212DQ-00A –1.3A, 1MHz, MICROPOWER STEP-UP CONVERTER EV3212DQ-00A Rev. 1.0 www.MonolithicPower.com 2 9/1/2009 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. EVALUATION BOARD SCHEMATIC 133K R4 NS NS NS NS 10K VIN PGND VOUT GND 40V/2A MP3212DQ PGND AGND VDDOUT VOUT SW VDD SHDN NC NC FBEPD 7 5 CN1 EV3212DQ-00A BILL OF MATERIALS Qty Ref Value Description Package Manufacturer Manufacturer P/N 1 C1 3.3uF Ceramic Cap., 50V, X7R 1210 Murata GRM32DR71H335KA88L

2 C2,C7 NS

1 C4 10uF Ceramic Cap., 16V, X7R 1206 Murata GRM31CR71C106KA64L 1 C5 0.1uF Ceramic Cap., 16V, X7R 0603 Murata GRM188R71C104KA01D

1 R1 10K Ω Film Resistor, 1% 0603 Yageo RC0603FR-0710K0L

1 R2 133K Ω Film Resistor, 1% 0603 Yageo RC0603FR-0133K0L

1 D1 2A,40V Schottky Diode SMA Diode Inc B240A-13-F

1 D2 NS

1 CN1 2-Pin Header,0.1” Sullins PTC02SAAN 1 Jumper Short 2 PIN 2.54mm Short Jumper 0.1” Sullins STC02SYAN 1 L1 10 uH Inductor, Idc=2.7A, DCR=71mΩ 8x8x4mm TOKO B1015AS-100M

1 U1 Step-down Regulator QFN10 MPS MP3212DQ-R1

NOTICE: The information in this document is subject to change wi thout notice. Please contact M PS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights ar e not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV3201DQ-00A Rev. 1.0 www.MonolithicPower.com 4 9/1/2009 MPS Proprietary Information. Unaut horized Photocopy and Duplication Prohibited. © 2009 MPS. All Rights Reserved. QUICK START GUIDE The output voltage of this board is set to 18V. The board layout accommodates most commonly used inductors and output capacitors. 1. Preset Power Supply to 2.5V ≤ VIN ≤ 5.5V. 2. Turn Power Supply off. 3. Connect Power Supply terminals to: Positive (+): VIN Negative (–): GND 4. Connect Load to: Positive (+): VOUT Negative (–): GND 5. Turn Power Supply on after making connections. 6. The MP3212 is enabled on the evaluation board once VIN is applied. To disable the MP3212, disconnect CN1. 7. The output voltage VOUT can be changed by varying R2. Calculate the new value using the formula: OUT FB VR2 ( 1) R1V= −× Where VFB = 1.24V and R1 = 10kΩ For example, for VOUT = 18V R2= (18V/1.24V-1)x 10kΩ=135.2kΩ Therefore use a 133kΩ standard 1% value resistor.