MAX767 5V-to-3.3V, Synchronous, Step-Down Power-Supply Controller
SSOP20 SMD Package - image for illustration only
MAX767 5V-to-3.3V, Synchronous, Step-Down Power-Supply Controller
RS Components Part # 732-6992
RS Catalogue Price: £6.00+VAT
Manufactured by Maxim - Part # MAX767CAP+ - SSOP20 SMD Package
DESCRIPTION
The MAX767 is a high-efficiency, synchronous buck controller IC dedicated to converting a fixed 5V supply into a tightly regulated 3.3V output. Two key features set this device apart from similar, low-voltage step-down switching regulators: high operating frequency and all N-channel construction in the application circuit. The 300kHz operating frequency results in very small, lowcost external surface-mount components.
The inductor, at 3.3μH for 5A, is physically at least five times smaller than inductors found in competing solutions. All N-channel construction and synchronous rectification result in reduced cost and highest efficiency. Efficiency exceeds 90% over a wide range of loading, eliminating the need for heatsinking. Output capacitance requirements are low, reducing board space and cost.
FEATURES
- >90% Efficiency
- 700μA Quiescent Supply Current
- 120μA Standby Supply Current
- 4.5V-to-5.5V Input Range
- Low-Cost Application Circuit
- All N-Channel Switches
- Small External Components
- Tiny Shrink-Small-Outline Package (SSOP)
- Predesigned Applications:
Standard 5V to 3.3V DC-DC Converters up to 10A
High-Accuracy Pentium P54C VR-Spec Supply
APPLICATIONS
Local 5V-to-3.3V DC-DC Conversion
Microprocessor Daughterboards
Power Supplies up to 10A or More