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| EV2359DJ-00B 1.2A, 24V, 1.4MHz Step-Down Converter Evaluation Board in TSOT23-6 The Future of Analog IC Technology DESCRIPTION The EV2359DJ-00B is the evaluation board for the MP2359, a monolithic non-synchronous step-down switch mode converter with an integrated power MOSFET. The MP2359 achieves 1.2A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The MP2359 is available in TSOT23-6 and SOT23-6 packages. FEATURES * * * * * * * 1.2A Output Current Wide 4.5V to 24V Operating Input Range Output Adjustable from 0.8V to 15V Fully Assembled and Tested Cable Set-Top Box/Digital Video Recorders xDSL Modems/Routers Pre-Regulator for Linear Regulators APPLICATIONS "MPS" and "The Future of Analog IC Technology", are Trademarks of Monolithic Power Systems, Inc. ELECTRICAL SPECIFICATIONS Parameter Input Voltage Output Voltage Output Current Symbol VIN VOUT IOUT Value 4.5 - 24 3.3 1 Units V V A EV2359DJ-00B EVALUATION BOARD Efficiency vs Load Current 100 95 90 VOUT = 5V EFFICIENCY (%) 85 80 75 70 65 60 55 50 VOUT = 3.3V VIN = 12V 10 100 1000 MP2359-EC01 (L x W x H) 2.1" x 1.9" x 0.4" (5.3cm x 4.8cm x 1.0cm) Board Number EV2359DJ-00B MPS IC Number MP2359DJ LOAD CURRENT (mA) EV2359DJ-00B Rev. 1.0 5/5/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 1 EV2359DJ-00B - 1.2A, 24V, 1MHz STEP-DOWN CONVERTER in TSOT23-6 EV BOARD EVALUATION BOARD SCHEMATIC D3 1N4148 (Optional) VIN GND EN 4 EN 5 IN BS 1 C3 22nF D2 1N4148 (Optional) C6 NS MP2359 SW 6 VOUT 3.3V GND D1 B230A-13-F 3 GND FB U1 EV2359_S01 EV2359DJ-00B BILL OF MATERIALS Qty 2 1 1 1 1 1 2 1 1 1 1 1 1 Ref C4, C5 C1 C3 C2 C6 D1 D2, D3 L1 R1 R2 R3 R4 U1 Value 0.1F 10F 22nF 22F Description Package Manufacturer Manufacturer P/N 0603 1206 0603 1206 TDK Murata TDK TDK C1608X7R1H104K GRM31CR61E106KA12L C1608X7R1H223K C3216X5R0J226M 1N5819HW-7 A921CY-4R7M ERJ-3EKF4992V ERJ-3EKF1622V ERJ-3GEYJ104V ERJ-3GEY0R00V MP2359DJ Ceramic Capacitor, 50V, X7R Ceramic Capacitor, 25V, X5R Ceramic Capacitor, 50V, X7R Ceramic Capacitor, 6.3V, X5R Not Stuffed, Optional Diode Schottky, 40V, 1A Not Stuffed, Optional 4.7H Inductor, 1.66A, D63LCB 49.9k Resistor, 1% 16.2k Resistor, 1% 100k Resistor, 5% 0 Resistor, 5% DC/DC Converter SOD-123 Diodes Inc. SMD 0603 0603 0603 0603 TSOT23-6 Toko Panasonic Panasonic Panasonic Panasonic MPS EV2359DJ-00B Rev. 1.0 5/5/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 2 EV2359DJ-00B - 1.2A, 24V, 1MHz STEP-DOWN CONVERTER in TSOT23-6 EV BOARD PRINTED CIRCUIT BOARD LAYOUT Figure 1--Top Silk Layer Figure 2--Top Layer Figure 3--Bottom Layer EV2359DJ-00B Rev. 1.0 5/5/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 3 EV2359DJ-00B - 1.2A, 24V, 1MHz STEP-DOWN CONVERTER in TSOT23-6 EV BOARD QUICK START GUIDE 1. Connect the positive terminal of the load to VOUT pin, and the negative terminal of the load to GND pin. 2. Preset the power supply output to 4.5V - 24V and turn off the power supply. 3. Connect the positive terminal of the power supply output to the VIN pin and the negative terminal of the power supply output to the GND pin. 4. Turn the power supply on. The board will automatically startup. 5. To use the Enable function, apply a digital input to EN pin. Drive EN higher than 1.2V to turn on the regulator, drive EN less than 0.4V to turn it off. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. EV2359DJ-00B Rev. 1.0 5/5/2006 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. (c) 2006 MPS. All Rights Reserved. 4 |
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