LM3557SD-2/NOPB

LM3557 www.ti.com SNVS338B – NOVEMBER 2004 – REVISED FEBRUARY 2013 LM3557 Step-Up Converter for White LED Applications Check for Samples: LM3557 FEATURES DESCRIPTION • • • • • • • The LM3557 is a complete solution for white LED drive applications. With minimal external component count, no DC current leakage paths to ground, cycleby-cycle current limit protection, and output overvoltage protection circuitry, the LM3557 offer superior performance and cost savings over standard DC/DC boost component implementations. 1 2 • • VIN Range: 2.7V–7.5V Small External Components 1.25 MHz Constant-Switching Frequency Output Over-Voltage Protection Input Under-Voltage Protection Cycle-By-Cycle Current Limit TRUE SHUTDOWN: No DC current paths to ground during shutdown Low Profile Package: