The MAX1744/MAX1745 are step-down DC-DC controllers capable of handling up to 36V inputs. These parts use a proprietary current-limited control scheme for excellent light- and full-load efficiency, while their 330kHz (max) switching frequency permits small external components for space-critical applications. Operation to 100% duty cycle permits the lowest possible dropout voltage.
The MAX1744 contains an internal feedback network that provides a pin-selectable output voltage of either 3.3V or 5V. The MAX1745 uses an external feedback network to generate an adjustable output voltage between 1.25V and 18V.
The MAX1744/MAX1745 are available in a space-saving 10-pin μMAX® package.

High-Voltage Operation (up to 36VIN)
Efficiency > 90%
Output Power Capability Exceeds 50W
10-Pin μMax Package
Low-Dropout Voltage
100% (max) Duty Cycle
90μA Quiescent Current
4μA Shutdown Current
Up to 330kHz Switching Frequency
Output Voltage
5V or 3.3V (MAX1744)
Adjustable 1.25V to 18V (MAX1745)
Current-Limited Control Scheme
Applications
Automotive Electronics
Industrial Control Systems
Telecom Systems
Wall-Cube-Powered Devices
Related Resources
Related Products
Related Packaging
Technical Docs
Reference Designs

Switching Voltage Regulators, Maxim Integrated