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UCC36451G-SH2-R Datasheet(PDF) 2 Page - Unisonic Technologies |
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UCC36451G-SH2-R Datasheet(HTML) 2 Page - Unisonic Technologies |
2 / 8 page UCC36451 CMOS IC UNISONICTECHNOLOGIESCO.,LTD 2 of 8 www.unisonic.com.tw QW-R115-014.A PIN CONFIGURATION PIN DESCRIPTION PIN NO. PIN NAME DESCRIPTION 1 BS Boot-Strap Pin. Supply high side gate driver. 2 IN Power Input pin. Bypass IN to GND with a suitably large capacitor to eliminate noise on the input to the IC. 3 SW Power Switching Output. SW is the switching node that supplies power to the output. Connect the output LC filter from SW to the output load. 4 LG Gate drive for external low side N-MOSFET. 5 FB Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a resistive voltage divider from the output voltage. 6 GND Ground 7 CS1 The Current Sense 1 pin. 8 CS2 The Current Sense 2 pin. BLOCK DIAGRAM Internal Regulator PWM Control & Protect Logic FB M1 CURRENT SENSE AMPLIFIER BS IN SW LG Input UVLO 7.0V/OVP Softstart Thermal Protection 1V 1.1V GND CS1 VDD 0.1V CS2 0.1V |
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