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3.6-35V 1ch Buck converter(controller) - BD9845FV

BD9845FV is an IC containing a circuit of switching regulator controller by pulse width modulation system.This circuit can be used for step-down DC/DC converter operation.In addition, the package is designed compact, and is optimum for compact power supply for many kinds of equipment.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD9845FV-E2 Active SSOP-B14 2500 2500 Taping Yes
 
Specifications:
Grade Standard
ch 1
Integrated FET / Controller Controller
Buck / Boost / Buck-Boost / Inverting Buck
Synchronous / Nonsynchronous Nonsynchronous
Vin1(Min.)[V] 3.6
Vin1(Max.)[V] 35.0
Vout1(Min.)[V] 1.2
Vout1(Max.)[V] 31.5
Iout1(Max.)[A] 1.0
SW frequency(Max.)[MHz] 1.5
Light Load mode No
EN Yes
PGOOD No
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
Features:
  • ・High voltage resistance input (Vcc=35V)
    ・FET driver circuit is contained (step-down circuit 1 output).
    ・Error amplifier reference voltage (1.0V±1%) and REG output circuit (2.5V) are contained.
    ・Over current detection circuit is contained.
    ・Soft start and pause period can be adjusted.
    ・Three modes of standby, master, and slave can be switched. (ices=0μA typ in standby mode.)
    ・ON / OFF control is enabled independently for each channel. (DT terminal)
 
 
Applications:
Pin Configuration:
Pin Configration
 
 
Technical Data
Application Note

Capacitor Calculation for Buck converter IC

Application Note

Inductor Calculation for Buck converter IC

Application Note

Resistor Value Table to set Output Voltage of Buck Converter IC

Application Note

Thermal Resistance

Application Note

PCB Layout Techniques of Buck Converter

Application Note

The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit

Application Note

Calculation of Power Loss (Synchronous)

Application Note

Considerations for Power Inductors Used for Buck Converters

Application Note

Snubber Circuit for Buck Converter IC