LDO Regulator, 20 mA, Low Dropout, Ultra-High PSRR, Ultra-Low Noise

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Overview

The NCV47551 is a low noise low output current integrated low dropout regulator designed for use in harsh automotive environments. It includes wide operating temperature and input voltage ranges. The device is offered with adjustable voltage versions available in 3% output voltage accuracy. It has a high peak input voltage tolerance and reverse input voltage protection. It also provides overcurrent protection, overtemperature protection and enable for control of the state of the output voltage. The integrated current sense feature provides diagnosis and system protection functionality. The current limit of the device is adjustable by resistor connected to CSO pin. Voltage on CSO pin is proportional to output current.

  • Microphone Power Supply
  • Audio and Infotainment System
  • Navigation
  • Satellite Radio
  • Automotive
  • Enable Input (3.3 V Logic Compatible Thresholds)
  • Adjustable Voltage Version (from 3.3 V to 20 V) 3% Output
    Voltage
  • Adjustable Current Limit (from 100 µA to 20 mA) with 10% Accuracy
  • Protection: Current Limitation, Thermal Shutdown, Reverse Input Voltage

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Product

Status

CAD Models

Compliance

Package Type

Case Outline

MSL Type

MSL Temp (°C)

Container Type

Container Qty.

ON Target

Output

Polarity

VO (V)

IO Typ (A)

VI Min (V)

VI Max (V)

VDO Typ (V)

Iq Typ (mA)

PSRR (dB)

Noise (µVrms)

Enable

PowerGood

Application

Reference Price

NCV47551DAJR2G

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Active

CAD Model

Pb

A

H

P

SOIC-8

1

260

REEL

2500

Y

Single

Positive

Adj

0.02

-42

40

0.21

0.265

85

23

Yes

No

Automotive

$0.5722

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