The MAX17290/MAX17292 high-efficiency, synchronous step-up DC-DC controllers operate over a 4.5V to 36V input voltage range with 42V input transient protection. The input operating range can be extended to as low as 2.5V in Bootstrapped mode.

The MAX17290 and MAX17292 use a constant-frequency, pulse-width modulating (PWM), peak current-mode control architecture. There are multiple versions of the devices offering one or more of the following functions: a synchronization output (SYNCO) for 180° out-of-phase operation, an overvoltage protection function using a separate input pin (OVP), and a reference input pin (REFIN) to allow on-the-fly output voltage adjustment.

The MAX17290 and MAX17292 operate in different frequency ranges. All versions can be synchronized to an external master clock using the FSET/SYNC input.

The devices are available in a compact 12-pin (3mm x 3mm) TQFN and 10-pin μMAX packages. Both packages have exposed pads. -40°C to +85°C Operation. MAX17290, MAX17292: Functional Diagram MAX17290, MAX17292: Functional Diagram 放大+

关键特性

Reduces Solution Size and Cost

All-Ceramic Capacitor Solution Allows Ultra-Compact Solution Size

100kHz to 1MHz (MAX17290) and 1MHz to 2.5MHz (MAX17292) Switching-Frequency with External Synchronization

Increases Design Flexibility

Bootstrapped Mode Allows Input Voltage to be 2.5V

Adjustable Slope Compensation

Reduces Power Dissipation

>90% Peak Efficiency

Low 4μA (typ.) Shutdown Current

Operates Reliably

42V Input Voltage Transient Protection

Fixed 9ms Internal Software Start Reduces Input Inrush Current

PGOOD Output and Hiccup Mode for Enhanced System Protection

Overtemperature Shutdown

Reduced EMI Emission with Spread-Spectrum Control