MIC2876

MIC2876 4.8A ISW, Synchronous Boost Regulator with Bi-Directional Load Disconnect General Description The MIC2876 is a compact and highly-efficient 2MHz synchronous boost regulator with a 4.8A switch. It features a bi-directional load disconnect function which prevents any leakage current between the input and output when the device is disabled. The MIC2876 operates in bypass mode automatically when the input voltage is greater than the target output voltage. At light loads, the boost converter goes to the PFM mode to improve the efficiency. The MIC2876 also features an integrated anti-ringing switch to minimize EMI. The MIC2876 is available in a 8-pin 2mm × 2mm Thin DFN (TDFN) package, with a junction temperature range of −40°C to +125°C. Datasheets and support documentation are available on Micrel’s web site at: www.micrel.com. Features Input voltage range: 2.5V to 5.5V Fully-integrated, high-efficiency, 2MHz synchronous boost regulator Bi-directional true load disconnect Integrated anti-ringing switch Up to 95% efficiency <1µA shutdown current Bypass mode for VIN ≥ VOUT Overcurrent protection and thermal shutdown Fixed and adjustable output versions 8-pin 2mm × 2mm TDFN package Applications Tablet and smartphones USB OTG and HDMI hosts Portable power reserve supplies High-current parallel Lithium cell applications Portable equipment Simplified Application Schematics MIC2876 (Adjustable Output) MIC2876 (Fixed Output) Micrel Inc. 2180 Fo...