LT3668
Features n
LT3668 40V 400m A Step-Down Switching Regulator with Dual Fault Protected Tracking LDOs Description
The LT®3668 is a monolithic triple power supply posed of a 400m A buck switching regulator and two 200m A low dropout linear tracking regulators (LDOs).This provides a plete and robust power solution for applications that require the power supply of a sensor to tightly track the power supply of a measurement ASIC. Each tracking LDO supplies 200m A of output current with a typical dropout voltage of 340m V, and each LDO has an accurate resistor programmable current limit. Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting and reverse current protection. The buck regulator includes a high efficiency switch, a boost diode, and the necessary oscillator, control and logic circuitry. Current mode topology is used for fast transient response and good loop stability. Low ripple Burst Mode operation maintains high efficiency at low output...
