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NCP731ADN330R2G

LDO Regulator

The NCP731ADN330R2G is a ldo regulator from onsemi. View the full NCP731ADN330R2G datasheet below including key specifications.

Official NCP731ADN330R2G datasheet (PDF) — the source this page was extracted from.

Manufacturer

onsemi

Package

MSOP8 EP 3x3

NCP731ADN330R2G Key Specifications

ParameterValue
PackagingCut Tape
Standard Pack Qty3000
Output voltage accuracy±0.6% at TJ = 25 °C; ±1.0% over -40 to 85 °C; ±1.5% over -40 to 125 °C
Quiescent current48 μA typ, 100 μA max (IOUT = 0 mA)
Shutdown current0.07 μA typ, 1.0 μA max (VEN = 0 V, VIN = 38 V)
Dropout voltage230 mV typ, 480 mV max at 150 mA
Current limit210 / 295 / 450 mA (min/typ/max)
PSRR (10 mA, VIN = VOUT-NOM + 2 V)80 dB at 10 Hz, 70 dB at 10 kHz, 42 dB at 100 kHz, 48 dB at 1 MHz
Output noise8.1 μVRMS typ (10 Hz–100 kHz, ADJ version)
UVLO rising threshold2.55 V typ; EN threshold 0.9 V typ
Thermal shutdown170 °C typ, 10 °C hysteresis
Thermal resistance RθJA44 °C/W

NCP731ADN330R2G Overview

Part: NCP731ADN330R2G — onsemi (NCP731 family, 3.3 V fixed-output version)

Type: Low-Noise CMOS LDO Regulator

Description: 2.7–38 V input, 150 mA CMOS LDO with 8 μVRMS typical noise (10 Hz–100 kHz), 48 μA typical quiescent current and fixed 3.3 V or 5.0 V and adjustable 1.2–35 V output options.

Operating Conditions:

  • Input voltage: 2.7–38 V
  • Operating junction temperature: -40 to 125 °C
  • Output current: up to 150 mA
  • Output capacitor: 1–1000 μF effective, ESR 1–50 mΩ

Absolute Maximum Ratings:

  • Max input voltage (VIN): -0.3 to 40 V
  • Output current: internally limited
  • Max junction temperature: 150 °C
  • Storage temperature: -55 to 150 °C
  • ESD: HBM 2000 V, CDM 1000 V

Key Specs:

  • Output voltage accuracy: ±0.6% at TJ = 25 °C; ±1.0% over -40 to 85 °C; ±1.5% over -40 to 125 °C
  • Quiescent current: 48 μA typ, 100 μA max (IOUT = 0 mA)
  • Shutdown current: 0.07 μA typ, 1.0 μA max (VEN = 0 V, VIN = 38 V)
  • Dropout voltage: 230 mV typ, 480 mV max at 150 mA
  • Current limit: 210 / 295 / 450 mA (min/typ/max)
  • PSRR (10 mA, VIN = VOUT-NOM + 2 V): 80 dB at 10 Hz, 70 dB at 10 kHz, 42 dB at 100 kHz, 48 dB at 1 MHz
  • Output noise: 8.1 μVRMS typ (10 Hz–100 kHz, ADJ version)
  • UVLO rising threshold: 2.55 V typ; EN threshold 0.9 V typ
  • Thermal shutdown: 170 °C typ, 10 °C hysteresis
  • Thermal resistance RθJA: 44 °C/W

Features:

  • Adjustable output 1.2–35 V; fixed 3.3 V and 5.0 V versions
  • Programmable soft start (SS pin)
  • Feed-forward capacitor pin on fixed versions for lower noise and better dynamic performance
  • Enable input
  • Over-current and thermal shutdown protection
  • Stable with small 1 μF ceramic capacitors
  • Pb-free and RoHS compliant

Applications:

  • Post DC-DC converter regulation and ripple filtering
  • Supply rails for op-amps, ADCs, DACs and precision analog/audio
  • Test and measurement
  • Metering
  • Industrial instrumentation
  • Battery-powered devices

Package:

  • MSOP8 EP 3x3 (Micro-8 EP, CASE 846AT), 8 pins with exposed pad connected to GND

NCP731ADN330R2G Features

  • Output Voltage Adjustable Range: 1.2 V to 35 V
  • Operating Input V oltage Range: 2.7 V to 38 V
  • Fixed Output Voltage Versions: 3.3 V and 5.0 V (other voltage versions on request)
  • Low Quiescent Current: 48 m A typ.
  • Very Low Noise: 8 m VRMS (10 Hz to 100 kHz)
  • Low Shutdown Current: 100 nA typ.
  • Output Voltage Accuracy ± 0.6% (25 ° C)
  • Low Dropout: 290 mV typ. at 150 mA
  • Programmable Soft Start Circuit
  • Over -Current and Thermal Shutdown Protections
  • Stable with Small 1 m F Ceramic Capacitors
  • Available in Micro -8 EP Package
  • Device is Pb -Free and RoHS Compliant

NCP731ADN330R2G Applications

  • Post DC -DC Converter Regulation and Ripple Filtering
  • Supply Rails for OpAmps, ADCs, DACs and other Precision Analog Circuitry and Audio
  • Test and Measurement
  • Metering
  • Industrial Instrumentation
  • Battery Powered Devices

MSOP8 EP 3x3 CASE 846AT

NCP731ADN330R2G Pin Configuration

Pin NumberPin NameDescription
8INPower supply input pin.
4GNDGround pin.
1OUTLDO output pin.
5ENEnable input pin (high = enable, low = disable). If this pin is not needed it should be conned to IN pin. No internal pull - up or pull - down circuit is present.
2ADJ/FFADJ version - pin is ADJ • Adjust input pin. Could be connected directly or by the resistor divider to the output pin. FIX versions - pin is FF • Feed forward capacitor pin. Could be connected by C FF capacitor to OUT pin for better dynamic performance & lower noise or left unconnected .
3, 7NCNot internally connected. Could be left unconnected or connected to GND.
6SSSoft - start input pin. Connect a C SS capacitor to set soft - start time. Could be left floating if not used.
EPEPADExposed pad, must be connected to GND.

NCP731ADN330R2G Thermal Information

When the LDO's die temperature exceeds the thermal shutdown threshold value, the device is internally disabled. The IC will remain in disabled state until the die temperature decreases by the thermal shutdown hysteresis value. Then the LDO is back enabled.

The thermal shutdown feature provides the protection against overheating due to application failure and it is not intended to be used as a normal working function.

NCP731ADN330R2G Typical Application

  • Post DC -DC Converter Regulation and Ripple Filtering
  • Supply Rails for OpAmps, ADCs, DACs and other Precision Analog Circuitry and Audio
  • Test and Measurement
  • Metering
  • Industrial Instrumentation
  • Battery Powered Devices

MSOP8 EP 3x3 CASE 846AT

Other Linear Regulators (LDO)

All Linear Regulators (LDO) datasheetsAll onsemi datasheets (337)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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