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Automatically Controlled Buck-Boost Switching Regulator - BD9035AEFV-C

The BD9035AEFV-C is a buck-boost switching controller with a high withstand voltage and a wide input range (VIN=3.8~30V) capable of generating buck-boost output with one inductor. The IC has a ±7% high accuracy switching frequency for the entire operating temperature range (Ta=-40°C~+125°C). Because of the automatically controlled buck-boost system the BD9035AEFV-C also has a higher efficiency compared to regular switching regulators employing Sepic or H-bridge systems.

Part number
Status
Package
Unit Quantity
Minimum Package Quantity
Packing Type
RoHS
BD9035AEFV-CE2 Active HTSSOP-B24 2000 2000 Taping Yes
 
Specifications:
Grade Automotive
ch 1
Integrated FET / Controller Controller
Buck / Boost / Buck-Boost / Inverting Buck-Boost
Synchronous / Nonsynchronous Synchronous
Vin1(Min.)[V] 3.8
Vin1(Max.)[V] 30.0
Vout1(Min.)[V] 3.3
Vout1(Max.)[V] 3.7
SW frequency(Max.)[MHz] 0.6
EN Yes
PGOOD Yes
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 125
Features:
  • · Power supply voltage: 40V(maximum rating)
    · Automatically controlled buck-boost system.
    · ±7% High accuracy switching frequency (Ta=-40°C~+125°C).
    · PLL circuit for external synchronization: 100kHz~600kHz
    · Two-stage overcurrent protection through one external resistor.
    · Various protection functions
    · Undervoltage, overvoltage output detection circuit & constant output monitor pin (PGOOD)
    · AEC-Q100 Qualified
 
 
Applications:
 
 
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