3.5-14V 1A 1ch Buck converter - BD8312HFN
ROHM’s 1.0A/1.5 MHz synchronous step-down switching regulator BD8312HFN produces step-down output including 1.2, 1.8, 3.3, or 5 V from 4 batteries, batteries such as Li2cell or Li3cell, etc. or a 5V/12V fixed power supply line. This IC allows easy production of small power supply by a wide range of external constants, and is equipped with an external coil/capacitor downsized by high frequency operation of 1.5 MHz, built-in synchronous rectification SW capable of withstanding 15 V, and flexible phase compensation system on board.
|* This product is a STANDARD grade product and not recommend for on-vehicle devices.|
|Integrated FET / Controller||Integrated FET|
|Buck / Boost / Buck-Boost / Inverting||Buck|
|Synchronous / Nonsynchronous||Synchronous|
|Light Load mode||No|
|Operating Temperature (Min.)[°C]||-25|
|Operating Temperature (Max.)[°C]||85|
- ・Input voltage range 3.5 to 14V
・Includes two power FET transistor (1.0A)
・High speed frequency 1.5MHz .
・Include gain phase compensation RC for error AMP.
・Soft start circuit / Timer latched prevention circuit from shorting..
・HSON8 package (2.9mm x 3mm, 0.65mm pitch ).
Capacitor Calculation for Buck converter IC
Inductor Calculation for Buck converter IC
Resistor Value Table to set Output Voltage of Buck Converter IC
PCB Layout Techniques of Buck Converter
The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
Calculation of Power Loss (Synchronous)
Considerations for Power Inductors Used for Buck Converters
Snubber Circuit for Buck Converter IC
Efficiency of Buck Converter
Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)