Maxim Integrated MAX669EUB/V+, Automotive AEC-Q100 switching controller, Boost/Flyback/SEPIC topology, 100kHz–500kHz switching, 1.8V–28V supply, 90% max duty cycle, 10-uMAX/uSOP package.
| Parameter | Value |
|---|---|
| Series | Automotive, AEC-Q100 |
| Output type | Transistor Driver |
| Mounting | Surface Mount |
| Voltage - supply (Vcc (Vdd)) | 1.8V ~ 28V |
| Frequency | 100kHz ~ 500kHz |
| I/O channels | 1 |
| Output phases | 1 |
| Duty cycle | 90% |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tube |
| Function | Step-Up, Step-Up/Step-Down |
| Topology | Boost, Flyback, SEPIC |
| Clock sync | Yes |
| Case | 10-TFSOP, 10-MSOP (0.118\", 3.00mm Width) |
| Control features | Enable, Frequency Control |
| Output configuration | Positive, Isolation Capable |
| Synchronous rectifier | No |
The MAX669EUB/V+ from Maxim Integrated is a current-mode PWM switching controller designed for boost, flyback, and SEPIC topologies. The controller drives an external N-channel MOSFET and operates with a single output phase.
The switching frequency range of 100 kHz to 500 kHz lets you trade off inductor size against switching losses. The 90% maximum duty cycle supports moderate step-up ratios in boost or SEPIC.
Yes, the MAX669EUB/V+ is qualified to AEC-Q100, the automotive reliability standard. It is part of Maxim's Automotive series and is rated for an operating temperature range of -40°C to 85°C.
Yes, the MAX669EUB/V+ supports SEPIC topology. It also supports boost and flyback topologies. The controller includes clock synchronization and an enable pin, which are useful for multi-rail designs.
The maximum duty cycle is 90%. This limits the achievable step-up ratio in boost or SEPIC configurations — for a 12 V input, the output can be regulated up to roughly 120 V before hitting the duty-cycle ceiling, assuming ideal components.