XCM519

XCM519 Series GENERAL DESCRIPTION www.DataSheet4U.com ETR2421-003 600mA Synchronous Step-Down DC/DC Converter + Low Voltage Input LDO The XCM519 series is a multi combination module IC which comprises of a 600mA driver transistor built-in synchronous step–down DC/DC converter and a low voltage input LDO regulator. The device is housed in small USP-12B01 package which is ideally suited for space conscious applications. Battery operated portable products require high efficiency so that a dual DC/DC converter is often used. The XCM519 can replace this dual DC/DC to eliminate one inductor and reduce output noise. The DC/DC converter and the LDO regulator blocks are isolated in the package so that noise interference from the DC/DC to the LDO regulator is minimal. A low output voltage and low On-resistance LDO regulator is added in series to the DC/DC output so that one another low output voltage is created with a high efficiency and low noise. With comparison to the dual DC/DC solution, one inductor can be eliminated which results in parts reduction and board space saving. APPLICATIONS Mobile phones, Smart phones Bluetooth equipment Portable communication modems FEATURES Input Voltage Range : 2.7V ~ 6.0V Output Voltage Range : 0.8V ~ 4.0V High Efficiency : 92% (TYP.) Output Current : 600mA (MAX.) Oscillation Frequency : 1.2MHz, 3.0MHz (+15%) Maximum Duty Cycle : 100% Soft-Start Circuit Built-In Current Limiter Circuit (Constant Current & Latching) Bui...