Switching regulator has programmable current limit
Linear Technology
LT3663 switching regulator
Linear Technology has announced the LT3663, a 1.2A, 1.5MHz monolithic current mode step-down switching regulator with a programmable output-current limit.
Its operating input voltage of 7.5 to 36V makes the LT3663 suitable for a variety of input sources, including unregulated 12V wall adapters, 24V industrial supplies, Fire Wire and automotive applications.
Onboard input-overvoltage lockout protects the device through input transients as high as 60V, such as those commonly found in automotive applications.
Output voltage and output current are both adjustable.
Output voltages as low as 0.8V are set by a resistor divider, while its output current is user programmable between 0.4A to 1.2A via an external resistor.
The LT3663 utilises a 1.5MHz oscillator, internal compensation and an internal boost diode to minimise the overall solution footprint.
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