BD00KA5WFP
500mA Variable Output, High-Accuracy LDO Regulator

ROHM's secondary LDO regulators were designed to maximize device characteristics and provide stable operation through low power consumption, increased miniaturization, and low noise. ROHM's 500mA variable secondary LDO regulators for local power supplies allow arbitrary setting of the output voltage(1.0V-4V variable) via external resistance and feature low saturation along with ±1% voltage accuracy. Optimized for TVs, HDDs, PCs, DVD players, and the like. In addition, multiple protection circuits are integrated (i.e. overcurrent, thermal shutdown), providing a high level of reliability.

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Product Detail

 
Part Number | BD00KA5WFP-E2
Status | Recommended
Package | TO252-5
Unit Quantity | 2000
Minimum Package Quantity | 2000
Packing Type | Taping
RoHS | Yes

Specifications:

Grade

Standard

Breakdown Voltage(Max.)[V]

7.0

ch

1

Vin(Min.)[V]

2.3

Vin(Max.)[V]

5.5

Vout (Typ.) [V]

1 to 4

Vout Precision

±1.0

Iout(Max.)[A]

0.5

Circuit Current[mA]

0.35

Shutdown Function

Yes

Thermal Shut-down

Yes

Over Current Protection

Yes

Over Voltage Protection

No

Discharge Function

No

Soft Start

No

I/O Voltage Difference (Typ.)[V]

0.12(Io=0.2A)

Ripple Rejection [dB]

50.0

Load Regulation[mV]

25(0 to 500mA)

Input Capacitor[µF]

1.0

Output Capacitor[µF]

1.0

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

105

Features:

・Maximum current: 500mA
・Output voltage accuracy: ±1%
・Ultra-low saturation voltage with PMOS output: 0.12V typ. (Io=200mA)
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Design Resources

 

Documents

Application Note

  • BDxxKA5 Series Dropout Voltage
  • BDxxKA5 Series Application Information
  • BDxxKA5 Series PCB Layout

Reference Design

  • BD00KA5WFP Reference Circuits and Bomlist

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

  • What Is Thermal Design
  • Method for Calculating Junction Temperature from Transient Thermal Resistance Data
  • Thermal Calculation for Linear Regulator
  • Thermal Resistance

Tools

2D/3D/CAD

  • TO252-5 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 Contained Report
  • RoHS Comission Delegated Directive

Export Information

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