BD9848FV
3.6-35V 2ch Buck converter(controller)

BD9848FV透過脈寬調變(PWM)方式,內建2組電路切換式穩壓控制器,2組電路均可用來執行降壓DC/DC轉換器的動作。 另外,本產品為小型封裝,最適合作為各種裝置的小型電源使用。

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* 本產品是標準級的產品。
本產品不建議使用的車載設備。

Product Detail

 
料號 | BD9848FV-E2
狀態 | 推薦品
封裝 | SSOP-B20
單位數量 | 2500
最小包裝數量 | 2500
包裝形式 | Taping
RoHS | Yes

規格:

Grade

Standard

ch

2

Integrated FET / Controller

Controller

Topology

Buck

Synchronous / Nonsynchronous

Non-synchronous

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

Vin2(Min.)[V]

3.6

Vin2(Max.)[V]

35.0

Vout2(Min.)[V]

1.2

Vout2(Max.)[V]

31.5

SW frequency(Max.)[MHz]

1.5

Light Load mode

No

EN

Yes

PGOOD

No

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

105

功能:

・高耐壓輸入(Vcc=35V)
・內建FET 驅動電路(2降壓電路輸出)
・內建誤差放大器基準電壓(1.0V±1%)及REG輸出電路(2.5V)
・內建過電流檢測電路(5週期連續檢測)
・可調整緩啟動/Dead time
・可切換待機/主/從 3種模式(待機時 Iccs=0uA typ.)
・可獨立控制各ch的ON/OFF(DT端子)

Design Resources

 

Documents

White Paper

  • Cutting-Edge Web Simulation Tool “ROHM Solution Simulator” Capable of Complete Circuit Verification of Power Devices and Driver ICs

Technical Articles

Schematic Design & Verification

  • Calculation of Power Dissipation in Switching Circuit
  • Considering Input Filter to Reduce Conducted Emissions by DCDC Converter
  • Considering Polarity of Power Inductor to Reduce Radiated Emission of DC-DC converter
  • Method for Monitoring Switching Waveform
  • Phase Compensation Design for Current Mode Buck Converter
  • Method for Determining Constants of
  • Power Supply Sequence Circuit with General Purpose Power Supply IC
  • Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
  • Diode Selection Method for Asynchronous Converter
  • PCB Layout Techniques of Buck Converter
  • Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
  • Snubber Circuit for Buck Converter IC
  • Efficiency of Buck Converter
  • Calculation of Power Loss (Synchronous)
  • Inductor Calculation for Buck converter IC
  • Considerations for Power Inductors Used for Buck Converters
  • Capacitor Calculation for Buck converter IC
  • The Important Points of Multi-layer Ceramic Capacitor Used in Buck Converter circuit
  • Resistor Value Table to set Output Voltage of Buck Converter IC
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Two-Resistor Model for Thermal Simulation
  • Notes for Temperature Measurement Using Thermocouples
  • Notes for Temperature Measurement Using Forward Voltage of PN Junction
  • Thermal Resistance
  • Precautions When Measuring the Rear of the Package with a Thermocouple

Tools

2D/3D/CAD

  • SSOP-B20 Footprint / Symbol

Packaging & Quality

Package Information

  • Package Information
  • Anti-Whisker formation

Manufacturing Data

  • Factory Information

Environmental Data

  • UL94 Flame Classifications of Mold Compound
  • Compliance with the ELV directive
  • REACH SVHC Non-use Declaration
  • REACH SVHC Non-use Declaration
  • RoHS Comission Delegated Directive

Export Information

  • The Export Control Order
  • Export Administration Regulations(EAR)