LT1949-1EMS8#TRPBF

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The LT1949-1EMS8#TRPBF is an integrated monolithic switching regulator that is built to reduce the size and complexity of a power supply design, allowing for greater flexibility. It contains two switchable, step-down converters — one for voltage conversion and one for current conversion — and a few supporting elements such as control loops, soft-start circuitry, and some slew rate control. This makes it ideal for applications where a continuous supply of power is necessary, such as powering embedded sensors in industrial, medical, and consumer products.

The DC-DC switching regulator works by taking a higher input voltage and step-down converting it to a lower output voltage. This output voltage can then be regulated to a specific value. This process is accomplished by two power switches and a control circuit. The power switches are connected in a formation called a bridge - the switches alternately open and close, which rapidly switches the input voltage to the output voltage. The switches must be controlled in order to maintain the desired voltage across the load. This is done by a control circuit which measures the output voltage, compares it to the reference voltage, and then adjusts the pulse-width modulated (PWM) signal to the power switches accordingly.

The maximum output current is integer-controlled, and the voltage is adjustable within a range of 0.6V to 95% × V IN by using an external resistor network. The LT1949-1EMS8#TRPBF also has soft start and skip-mode features that reduce the power consumed and size of the output capacitors.

In addition to its DC-DC switchable, step-down voltage regulators, the LT1949-1EMS8#TRPBF also has a current mode switchable step-up regulator that can supply a load current up to 1.4A. This feature is useful for applications requiring tight voltage accuracy and fast transient response.

In conclusion, the LT1949-1EMS8#TRPBF is a highly integrated, miniature DC-DC switchable, step-down voltage regulator. Due to its wide range of features, this device is ideal for embedded systems, industrial, medical and consumer products where low-cost, high efficiency, and small size are desired.

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