BD3509MUV
4.3-5.5V 4A 1ch LDO

BD3509MUV為能夠實現從超低電壓輸入到超低電壓輸出的晶片組用的線性穩壓器。透過使用內建的N-MOSFET功率電晶體，能夠在Rds ON(RON MAX=50mΩ)發生的電壓差的超低輸入/出電壓差下使用。透過把輸入/出電壓差控制在很小的限度，能夠實現大電流(Iomax=4.0A)輸出、降低變換損失，因此可置換切換式電源。BD3509MUV不需要切換式電源所必須的用於扼流圈和整流的二極體、功率電晶體，因此能夠降低裝置整體的成本和小型化。使用外接電阻能夠任意設定0.65～2.7V的輸出電壓。另外，透過使用NRCS端子能夠調整電壓輸出的起動時間，因此能夠對應裝置的電源程序。

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Product Detail

 
料號 | BD3509MUV-E2
狀態 | 推薦品
封裝 | VQFN020V4040
單位數量 | 2500
最小包裝數量 | 2500
包裝形式 | Taping
RoHS | Yes

規格:

Grade

Standard

Breakdown Voltage(Max.)[V]

6.0

ch

1

Vin(Min.)[V]

4.3

Vin(Max.)[V]

5.5

Vin 2ch[V]

0.7 to Vcc-1

Vout (Typ.) [V]

0.65 to 2.7

Vout Precision

±1.0

Iout(Max.)[A]

4.0

Circuit Current[mA]

1.2

Thermal Shut-down

Recover

Over Current Protection

Yes

Under Voltage Lock Out

Yes

Soft Start

Variable

Operating Temperature (Min.)[°C]

-10

Operating Temperature (Max.)[°C]

100

功能:

・内建高精度基準電壓電路(0.65Ｖ±1%)
・內建VCC低電壓誤動作防止電路(VCC=3.80V)
・透過NRCS減少衝擊電流
・內建超低(28mΩ typ)Nch Power MOSFET
・內建電流限制電路(4.0A min)
・内建熱截斷電路
・輸出可變型(0.65～2.7V)
・採用高功率VQFN020V4040封裝:4.0×4.0×0.9(mm)
・對應追踪功能
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Design Resources

 

Technical Articles

Schematic Design & Verification

  • Basics of Linear Regulators
  • Linear Regulator Specifications
  • Reverse Voltage Protection
  • Power Source ON/OFF Characteristics for Linear Regulator
  • Simple Test Method for Estimating the Stability of Linear Regulators
  • Connecting LDOs in Parallel
  • Problem Situations: Power Supply Does Not Start
  • Power Supply Sequence Circuit with General Purpose Power Supply IC
  • Table of resistance for output voltage setting on linear regulator Ics
  • Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
  • Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
  • Usage of SPICE Macromodel (for LDO)
  • BAxxCC0 Series Circuit Using a Ceramic Output Capacitor
  • Importance of Probe Calibration When Measuring Power: Deskew
  • Impedance Characteristics of Bypass Capacitor

Thermal Design

  • Thermal Calculation for Linear Regulator
  • Thermal Resistance

Tools

2D/3D/CAD

  • VQFN020V4040 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
  • RoHS Comission Delegated Directive

Export Information

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