特点
No External Components Required
V
CC
Range: 1.8V to 5V
Internal Voltage Triplers Produce High Side Gate Drive for Logic Level FETs
Ultralow Power:
10μA Per Driver ON Current (LTC1982)
20μA ON Current (LTC1981)
< 1μA Shutdown Current
GATE DRIVE Outputs Driven to Ground During Shutdown
GATE DRIVE Outputs Internally Clamped to 7.5V Max
Ultrasmall Application Circuit
5-Pin SOT-23 Package (LTC1981)
6-Pin SOT-23 Package (LTC1982)
GATE DRIVE READY Output (LTC1981)
典型应用
描述
The LTC ? 1981/LTC1982 are low-powered, self-contained N-channel MOSFET drivers. An internal voltage tripler allows gates to be driven without the use of any external components. Internal regulation circuitry allows quiescent current to drop to 10μA per driver (20μA for LTC1981) once the gates are closed.
Low quiescent current and low shutdown current (under 1μA) make these parts ideal for battery and other power constrained systems. The wide input voltage range accommodates a variety of battery/input configurations.
Gate drive is internally clamped to 7.5V providing protection to the external MOSFET gate. The MOSFETs can be driven in either high side or low side mode.
The LTC1981 single driver version also includes a gate drive ready pin and twice the drive current capacity of the dual driver LTC1982.
The LTC1981 is available in a 5-pin SOT-23. The LTC1982 is available in a 6-pin SOT-23.