REG101NA-2.85/3K

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Texas Instruments

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

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REG101NA-2.85/3K

Active

Texas Instruments

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

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Description Specifications Series Pricing CAD Documents

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).

Technical Specifications

Parameters and characteristics for this part

Specification	REG101NA-2.85/3K

Control Features	Enable
Current - Output	100 mA
Current - Quiescent (Iq)	0.5 mA
Current - Supply (Max)	650 µA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Output Configuration	Positive
Output Type	Fixed
Package Name	SOT-23-5
Protection Features	Over Current, Over Temperature
PSRR	65 dB
Voltage - Input (Max)	10 V
Voltage - Output (Min/Fixed)	2.85 V
Voltage Dropout (Max)	0.13 V

REG101 Series

Part	Number of Regulators	Voltage - Input (Max)	Operating Temperature (Min)	Operating Temperature (Max)	Current - Supply (Max)	Mounting Type	Control Features	Current - Quiescent (Iq)	PSRR	Current - Output	Output Configuration	Protection Features	Output Type	Package Name	Package Length	Package Width	Voltage Dropout (Max)	Voltage - Output (Min/Fixed)
Texas Instruments REG101UA-3.3/2K5	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	8-SOIC	0.154 in	3.9 mm	0.13 V	3.3 V
Texas Instruments REG101UA-3.3G4	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	8-SOIC	0.154 in	3.9 mm	0.13 V	3.3 V
Texas Instruments REG101UA-2.5/2K5	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	8-SOIC	0.154 in	3.9 mm	0.13 V	2.5 V
Texas Instruments REG101NA-2.8/250	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	SOT-23-5			0.13 V	2.8 V
Texas Instruments REG101NA-3.3/250G4	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	SOT-23-5			0.13 V	3.3 V
Texas Instruments REG101NA-2.5/3K	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	SOT-23-5			0.13 V	2.5 V
Texas Instruments REG101NA-3.3/3KG4	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	SOT-23-5			0.13 V	3.3 V
Texas Instruments REG101UA-3.3	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	8-SOIC	0.154 in	3.9 mm	0.13 V	3.3 V
Texas Instruments REG101NA-5/250	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	SOT-23-5			0.13 V	5 V
Texas Instruments REG101UA-2.8/2K5G4	1	10 V	-40 °C	85 °C	650 µA	Surface Mount	Enable	0.5 mA	65 dB	100 mA	Positive	Over Current Over Temperature	Fixed	8-SOIC	0.154 in	3.9 mm	0.13 V	2.8 V