BD4271FP2-C
550mA 5V Output LDO Regulator With WDT and Voltage Detector for Automotive

BD4271FP2-C is automotive voltage regulator with watchdog timer and offers the output current of 550mA while limiting the quiescent current low. A logical “HIGH” at the CTL pin enables the LDO regulator and “LOW” disables the LDO regulator and keeps current consumption low. A reset signal is generated for an output voltage VO of Typ 4.65V. The reset delay time and watchdog time (WDT) can be programmed by the external capacitor.

Product Detail

 
Part Number | BD4271FP2-CE2
Status | Recommended
Package | TO263-7
Unit Quantity | 500
Minimum Package Quantity | 500
Packing Type | Taping
RoHS | Yes

Functional Safety:

Category : FS supportive
A product that has been developed for automotive use and is capable of supporting safety analysis with regard to the functional safety.

Specifications:

Grade

Automotive

Common Standard

AEC-Q100 (Automotive Grade)

ch

1

Vin(Min.)[V]

5.5

Vin(Max.)[V]

45.0

Vout (Typ.) [V]

5

Vout Precision

±2.0%

Iout(Max.)[A]

0.55

Circuit Current[mA]

0.075

Shutdown Function

Yes

Thermal Shut-down

Yes

Over Current Protection

Yes

Under Voltage Lock Out

Yes

Discharge Function

Yes

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

0.2(Io=300mA)

Ripple Rejection [dB]

60.0

Load Regulation[mV]

10

Detect Voltage(VDET) [V]

4.65

VDET Precision

0.026

Additional Feature

5V LDO + 4.65V Reset + WDT

Operating Temperature (Min.)[°C]

-40

Operating Temperature (Max.)[°C]

150

Features:

  • AEC-Q100 qualified
  • Low ESR ceramic capacitors applicable for output
  • Low drop voltage: PDMOS output transistor
  • Power on and under-voltage reset
  • Programmable reset delay and watchdog time by external capacitor
  • Enable input
  • Over Current Protection (OCP)
  • Thermal Shut Down (TSD)

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
  • Suppression Method of Switching Noise Using Linear Regulator and Low Pass Filter
  • Measurement Method for Phase Margin with Frequency Response Analyzer (FRA)
  • 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

  • TO263-7 Footprint / Symbol

Packaging & Quality

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)