REG101 Series

100-mA, 10-V, low-dropout voltage regulator with enable

Catalog

100-mA, 10-V, low-dropout voltage regulator with enable

Part	Number of Regulators	Output Configuration	Current - Supply (Max) [Max]	Control Features	Voltage Dropout (Max) [Max]	Voltage - Input (Max) [Max]	Protection Features	Current - Quiescent (Iq)	Current - Output	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Package / Case	Package / Case [y]	Package / Case [x]	PSRR	Supplier Device Package	Output Type	Voltage - Output (Min/Fixed)
Texas Instruments REG101UA-3.3G4	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	8-SOIC	3.9 mm	0.154 in	65 dB	8-SOIC	1.81 mOhm	3.3 V
Texas Instruments REG101NA-2.8/250	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	SC-74A SOT-753			65 dB	SOT-23-5	1.81 mOhm	2.8 V
Texas Instruments REG101NA-3.3/250G4	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	SC-74A SOT-753			65 dB	SOT-23-5	1.81 mOhm	3.3 V
Texas Instruments REG101NA-2.5/3K	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	SC-74A SOT-753			65 dB	SOT-23-5	1.81 mOhm	2.5 V
Texas Instruments REG101NA-3.3/3KG4	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	SC-74A SOT-753			65 dB	SOT-23-5	1.81 mOhm	3.3 V
Texas Instruments REG101NA-5/250	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	SC-74A SOT-753			65 dB	SOT-23-5	1.81 mOhm	5 V
Texas Instruments REG101UA-2.8/2K5G4	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	8-SOIC	3.9 mm	0.154 in	65 dB	8-SOIC	1.81 mOhm	2.8 V
Texas Instruments REG101NA-5/3KG4	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	SC-74A SOT-753			65 dB	SOT-23-5	1.81 mOhm	5 V
Texas Instruments REG101UA-2.5G4	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	8-SOIC	3.9 mm	0.154 in	65 dB	8-SOIC	1.81 mOhm	2.5 V
Texas Instruments REG101NA-3/3K	1	Positive	650 µA	Enable	0.13 V	10 V	Over Current Over Temperature	0.5 mA	100 mA	85 °C	-40 °C	Surface Mount	SC-74A SOT-753			65 dB	SOT-23-5	1.81 mOhm

Catalog

100-mA, 10-V, low-dropout voltage regulator with enable

Key Features

• NEW DMOS TOPOLOGY:Ultra Low Dropout Voltage:60mV typ at 100mAOutput capacitor NOT required for stabilityFAST TRANSIENT RESPONSEVERY LOW NOISE: 23 µVrmsHIGH ACCURACY: ±1.5% maxHIGH EFFICIENCY:IGND= 500 µA at IOUT= 100mANot Enabled: IGND= 10nA2.5V,2.8V,2.85V,3.0V,3.3V,5.0V,AND ADJUSTABLE OUTPUT VERSIONSOTHER OUTPUT VOLTAGES AVAILABLE UPON REQUESTFOLDBACK CURRENT LIMITTHERMAL PROTECTIONSMALL SURFACE-MOUNT PACKAGES:SOT23-5 and SO-8APPLICATIONSPORTABLE COMMUNICATION DEVICESBATTERY-POWERED EQUIPMENTPERSONAL DIGITAL ASSISTANTSMODEMSBAR-CODE SCANNERSBACKUP POWER SUPPLIESAll trademarks are the property of their respective owners.NEW DMOS TOPOLOGY:Ultra Low Dropout Voltage:60mV typ at 100mAOutput capacitor NOT required for stabilityFAST TRANSIENT RESPONSEVERY LOW NOISE: 23 µVrmsHIGH ACCURACY: ±1.5% maxHIGH EFFICIENCY:IGND= 500 µA at IOUT= 100mANot Enabled: IGND= 10nA2.5V,2.8V,2.85V,3.0V,3.3V,5.0V,AND ADJUSTABLE OUTPUT VERSIONSOTHER OUTPUT VOLTAGES AVAILABLE UPON REQUESTFOLDBACK CURRENT LIMITTHERMAL PROTECTIONSMALL SURFACE-MOUNT PACKAGES:SOT23-5 and SO-8APPLICATIONSPORTABLE COMMUNICATION DEVICESBATTERY-POWERED EQUIPMENTPERSONAL DIGITAL ASSISTANTSMODEMSBAR-CODE SCANNERSBACKUP POWER SUPPLIESAll trademarks are the property of their respective owners.

Description

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). The REG101 is well protected—internal circuitry provides a current limit which protects the load from damage. Thermal protection circuitry keeps the chip from being damaged by excessive temperature. The REG101 is available in the SOT23-5 and the SO-8 packages. 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). The REG101 is well protected—internal circuitry provides a current limit which protects the load from damage. Thermal protection circuitry keeps the chip from being damaged by excessive temperature. The REG101 is available in the SOT23-5 and the SO-8 packages.