5V Or 12V Single Synchronous Buck Pulse-Width Modulation (PWM) Controller

The ISL6545 makes simple work out of implementing a complete control and protection scheme for a DC/DC stepdown converter driving N-Channel MOSFETs in a synchronous buck topology. Since it CAN work with either 5V or 12V supplies, this one IC CAN be used in a wide variety of applications within a system. The ISL6545 integrates the control, Gate drivers, output adjustment, monitoring and protection functions into a single 8 Ld SOIC or 10 Ld DFN package.
The ISL6545 provides single feedback loop, voltage-mode control with fast transient response. The output voltage CAN be precisely regulated to as low as 0.6V, with a maximum tolerance of 1.0% over-temperature and line voltage variations. A selectable fixed frequency Oscillator ISL6545 for 300kHz; ISL6545A for 600kHz) reduces design complexity, while balancing typical application cost and efficiency.
The error Amplifier features a 20MHz gain-bandwidth product and 9V/s slew rate which enables high converter bandwidth for fast transient performance. The resulting PWM duty cycles range from 0% to 100%.
Protection from overcurrent conditions is provided by monitoring the rDS(ON) of the lower MOSFET to inhibit PWM operation appropriately. This approach simplifies the implementation and improves efficiency by eliminating the need for a Current Sense resistor.
By Intersil Corporation
ISL6545A 's PackagesISL6545A 's pdf datasheet
ISL6545ACBZ SOIC
ISL6545ACBZ-T SOIC
ISL6545ACRZ DFN
ISL6545ACRZ-T DFN
ISL6545AIBZ SOIC
ISL6545AIBZ-T SOIC
ISL6545AIRZ DFN
ISL6545AIRZ-T DFN




ISL6545A Pinout, Pinouts
ISL6545A pinout,Pin out
This is one package pinout of ISL6545A,If you need more pinouts please download ISL6545A's pdf datasheet.

ISL6545A Application circuits
ISL6545A circuits
This is one application circuit of ISL6545A,If you need more circuits,please download ISL6545A's pdf datasheet.


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