Maxim Integrated MAX1771CSA+T, current-mode PWM controller, boost/buck-boost topology, 300kHz switching, 92% max duty cycle, 3V to 16.5V supply, enable pin, 8-SOIC, 0°C to 70°C.
| Parameter | Value |
|---|---|
| Output type | Transistor Driver |
| Mounting type | Surface Mount |
| Voltage - supply (Vcc (Vdd)) | 3V ~ 16.5V |
| Frequency | 300kHz |
| Number of outputs | 1 |
| Output phases | 1 |
| Duty cycle | 92% |
| Operating temperature | 0°C ~ 70°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Step-Up, Step-Up/Step-Down |
| Topology | Boost, Buck-Boost |
| Clock sync | No |
| Case | 8-SOIC (0.154\", 3.90mm Width) |
| Control features | Enable |
| Output configuration | Positive |
| Synchronous rectifier | No |
The 300kHz switching frequency is fixed; the controller does not synchronize to an external clock.
The MAX1771CSA+T carries an active lifecycle status. For BOM planning, this means no forced redesign or inventory bulge from an impending EOL notice. The part is ROHS3 compliant.
The switching frequency is 300kHz. This is fixed; the controller does not support external clock synchronization.
Yes, the controller includes an enable pin for external shutdown control, allowing the converter to be turned off for power sequencing or low-power standby.
The maximum duty cycle is 92%, which defines the achievable step-up ratio and minimum dropout in boost mode.