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MM1664J Datasheet(PDF) 6 Page - Mitsumi Electronics, Corp. |
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MM1664J Datasheet(HTML) 6 Page - Mitsumi Electronics, Corp. |
6 / 8 page MITSUMI 1000mA Regulator MM166 F Characteristics (3.0V product Except where noted therwise, Ta=25°C, VIN=5V, VCONT=5V, CIN=1µF, CO=2.2µ) Application Circuit NC 12 GND 3 7 6 NC NC VIN Cn 4 Cont VO 8 5 1.0 µF 0.1 µF 2.2 µF Ceramic Ceramic Input To load Cn=470pF Ceramic Note 1. The output capacitor is required between output and GND to prevent oscillation. 2. The ESR of capacitor must be defined in ESR stability area. 3. The wire of Vcc and GND is required to print full ground plane for noise and stability. 4. The input capacitor must be connected a distance of less than 1cm from input pin. 5. The capacitor is connected to Cn must have low leakage current characteristics, because Cn pin is high impedance. 6. In case the output voltage is above the input voltage, the overcurrent flow by internal parasitic diode from output to input. In such application, the external bypass diode must be connected between output and input pin. GND 1 3 2 VIN VO 1.0 µF Ceramic 0.1 µF 2.2 µF About Power dissipation This IC's GND pin and Heat Spreader Bottom effectively radiate heat. By increasing these copper foil pattern area of PCB, Power dissipation improves. Please kindly desigh PCB pattern taking care of above features about power dissipation. Power Dissipation 0 500 1000 1500 2000 2500 3000 0 25 50 75 100 125 150 Ambient Temperature(˚C) HSOP-8 : 37mm 37mm 1.6mm Double sided glass epoxy Copper plane 80% To-252 : 150mm 100mm 1.0mm Double sided glass epoxy Copper plane 80% |
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