The LM5105 is a high-voltage gate driver designed to drive both the high-side and
low-side N–Channel MOSFETs in a synchronous buck or half-bridge configuration. The floating
high-side driver is capable of working with rail voltages up to 100 V. The single control input is
compatible with TTL signal levels and a single external resistor programs the switching transition
dead time through tightly matched turnon delay circuits. A high-voltage diode is provided to charge
the high-side gate-drive bootstrap capacitor. The robust level shift technology operates at high
speed while consuming low power and provides clean output transitions. Undervoltage lockout
disables the gate driver when either the low-side or the bootstrapped high-side supply voltage is
below the operating threshold. The LM5105 is offered in the thermally enhanced WSON plastic
package.
