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SOT753
Integrated Circuits (ICs)

REG101NA-2.5/3K

Obsolete
Texas Instruments

100-MA, 10-V, LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

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Search across all available documentation for this part.

DocumentsDEM-SOT23LDO Demonstration Fixture User's Guide (Rev. A)LDO Noise Demystified (Rev. B)+4
SOT753
Integrated Circuits (ICs)

REG101NA-2.5/3K

Obsolete
Texas Instruments

100-MA, 10-V, LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

Deep-Dive with AI

DocumentsDEM-SOT23LDO Demonstration Fixture User's Guide (Rev. A)LDO Noise Demystified (Rev. B)+4

Technical Specifications

Parameters and characteristics for this part

SpecificationREG101NA-2.5/3K
Control FeaturesEnable
Current - Output100 mA
Current - Quiescent (Iq)0.5 mA
Current - Supply (Max) [Max]650 µA
Mounting TypeSurface Mount
Number of Regulators1
Operating Temperature [Max]85 °C
Operating Temperature [Min]-40 °C
Output ConfigurationPositive
Output Type1.81 mOhm
Package / CaseSC-74A, SOT-753
Protection FeaturesOver Current, Over Temperature
PSRR65 dB
Supplier Device PackageSOT-23-5
Voltage - Input (Max) [Max]10 V
Voltage - Output (Min/Fixed)2.5 V
Voltage Dropout (Max) [Max]0.13 V

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
Texas InstrumentsLARGE T&R 1$ 2.38
100$ 2.08
250$ 1.46
1000$ 1.18

Description

General part information

REG101 Series

The REG101 is a family of low-noise, low-dropout linear regulators with low ground pin current. Its new DMOS topology provides significant improvement over previous designs, including low dropout voltage (only 60mV typ at full load), and better transient performance. In addition, no output capacitor is required for stability, unlike conventional low-dropout regulators that are difficult to compensate and require expensive low ESR capacitors greater than 1µF.

Typical ground pin current is only 500µA (at IOUT= 100mA) and drops to 10nA when not in enabled mode. Unlike regulators with PNP pass devices, quiescent current remains relatively constant over load variation and under dropout conditions.

The REG101 has very low output noise (typically 23µVrms for VOUT= 3.3V with CNR= 0.01µF), making it ideal for use in portable communications equipment. Accuracy is maintained over temperature, line, and load variations. Key parameters are guaranteed over the specified temperature range (-40°C to +85°C).