Negative output — what the configuration means for your rail
The output configuration is listed as Negative. This is not a generic buck-boost that can be wired for positive or negative — the control loop and error amplifier are referenced to the negative rail. If you need a -5V output from a 5V or 12V input, this controller is a direct fit. The Enable pin lets you sequence the rail on and off without dropping the input supply. Because it uses an external transistor driver output, the actual output current capability depends on the external MOSFET and inductor you pair it with; the controller itself handles the PWM logic and loop compensation.
Switching frequency and external component sizing
The 300 kHz switching frequency is a fixed internal oscillator — no external timing resistor or clock sync option.
Package and mounting
Housed in an 8-SOIC package (0.154" body width, 3.90 mm), surface-mount. The SOIC-8 footprint is standard and widely supported in assembly. No special thermal pad — junction-to-ambient thermal performance depends on copper area on the PCB.
Lifecycle and sourcing posture
The MAX774ESA+ carries an Active lifecycle status and is ROHS3 compliant. No last-time-buy notice or obsolescence risk is on record. The part is sourced through independent distribution and quoted to order against an RFQ.