MIC5022

The MIC5022 half-bridge MOSFET driver is designed to operate at frequencies up to 100kHz (5kHz PWM for 2% to 100% duty cycle) and is an ideal choice for high speed applications such as motor control and SMPS (switch mode power supplies).

A rising or falling edge on the input results in a current source pulse or sink pulse on the gate outputs. This output current pulse can turn on a 2000pF MOSFET in approximately 1ms.The MIC5022 then supplies a limited current (< 2mA), if necessary, to maintain the output states.

Two overcurrent comparators with nominal trip voltages of 50mV make the MIC5022 ideal for use with current sensing MOSFETs. External low value resistors may be used instead of sensing MOSFETs for more precise overcurrent control.Optional external capacitors placed on the C_TH and C_TL pins may be used to individually control the current shutdown duty cycles from approximately 20% to <1%. Duty cycles from 20% to about 75% are possible with individual pull-up resistors from C_TL and C_TH to V_DD. An open collector output provides a fault indication when either sense input is tripped.The MIC5022 is available in 16-pin wide SOIC and 14-pin plastic DIP packages.

Other members of the MIC502x family include the MIC5020 low-side driver and the MIC5021 high-side driver.