102 kHz switching — what it means for the board
The switching frequency is fixed at 102 kHz, with no clock sync input.
Synchronous rectifier — external MOSFETs required
This is a controller, not a converter; there are no integrated power switches. The Transistor Driver output type means you supply two N-channel MOSFETs — one for the high side, one for the low side — plus the inductor and output capacitor. The synchronous rectifier topology demands a bootstrap capacitor for the high-side gate drive. The 95% maximum duty cycle leaves headroom for dropout operation near the input rail. The Enable control feature lets you sequence the rail on and off from a logic signal.
Package and environment
Housed in an 8-pin SOIC with a 3.90 mm body width, this is a standard surface-mount footprint. The -40°C to 85°C operating range covers most industrial and telecom enclosures.
Sourcing and lifecycle
The MAX1966ESA+ carries an Active product status and is ROHS3 compliant. No pin-compatible second source or official replacement is listed in the available documentation.