LT3579/LT3579-1 6A Boost/Inverting DC/DC Converter with Fault Protection
FEATURES
n 6A, 42V Combined Power Switch n O...
LT3579/LT3579-1 6A Boost/Inverting DC/DC Converter with Fault Protection
FEATURES
n 6A, 42V Combined Power Switch n Output Short Circuit Protection n Wide Input Range: 2.5V to 16V Operating, 40V Maximum Transient n LT3579-1: Dual-Phase Capable n Master/Slave (3.4A/2.6A) Switch Design n User Configurable Undervoltage Lockout n Easily Configurable as a Boost, SEPIC, Inverting, or
Flyback Converter n Low VCESAT Switch: 250mV at 5.5A (Typical) n Can Be Synchronized to External Clock n Can Synchronize other Switching
Regulators n High Gain SHDN Pin Accepts Slowly Varying Input
Signals n 20-Lead TSSOP and 20-Pin 4mm × 5mm QFN
Packages
APPLICATIONS
n Local Power Supply n Vacuum Fluorescent Display (VFD) Bias Supplies n TFT-LCD Bias Supplies n Automotive Engine Control Unit (ECU) Power
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DESCRIPTION
The LT®3579 is a PWM DC/DC converter with built-in fault protection features to aid in protecting against output shorts, input/output overvoltage, and overtemperature conditions. The part consists of a 42V master switch, and a 42V slave switch that can be tied together for a total current limit of 6A. The LT3579 is ideal for many local power supply designs. It can be easily configured in Boost, SEPIC, Inverting, or Flyback configurations, and is capable of generating 12V at 1.7A, or –12V at 1.2A from a 5V input. In addition, the LT3579’s sla...