LP3991TL-2.5/NOPB

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Texas Instruments

300-MA, LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

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LP3991TL-2.5/NOPB

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Texas Instruments

300-MA, LOW-DROPOUT VOLTAGE REGULATOR WITH ENABLE

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Description Specifications Series Pricing CAD Documents

Description

General part information

LP3991 Series

Operating from a minimum input voltage of 1.65 V, the LP3991 LDO has been designed to provide fixed stable output voltages for load currents up to 300 mA. This device is suitable where accurate low voltages are required from low input voltage sources and is therefore suitable for post regulation of switched mode regulators. In such applications, significant improvements in performance and EMI can be realized, with little reduction in overall efficiency. The LP3991 provides fixed outputs as low as 1.2 V from a wide input range from 1.65 V to 4 V Using the enable (EN) pin, the device may be controlled to provide a shutdown state, in which negligible supply current is drawn.

The LP3991 is designed to be stable with space-saving ceramic capacitors as small as 0402 case size.

Performance is specified for a –40°C to +125°C junction temperature range. For output voltage options, contact your local Texas Instruments sales office.

Technical Specifications

Parameters and characteristics for this part

Specification	LP3991TL-2.5/NOPB

Control Features	Enable
Current - Output	300 mA
Current - Quiescent (Iq)	100 µA
Current - Supply (Max)	225 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 / Case	DSBGA, 4-WFBGA
Package Length	1 mm
Package Name	4-DSBGA
Package Width	1 mm
Protection Features	Short Circuit, Over Temperature
PSRR	65 dB
Voltage - Input (Max)	4 V
Voltage - Output (Min/Fixed)	2.5 V
Voltage Dropout (Max)	0.16 V

LP3991 Series

Part	PSRR	Package Width	Package Name	Package Length	Current - Supply (Max)	Protection Features	Voltage Dropout (Max)	Voltage - Input (Max)	Current - Quiescent (Iq)	Control Features	Number of Regulators	Current - Output	Output Configuration	Operating Temperature (Min)	Operating Temperature (Max)	Mounting Type	Package / Case	Voltage - Output (Min/Fixed)	Output Type	Board Type	Supplied Contents	Channels per IC (Single)	Channels per IC (Type)	Channels per IC (Count)	Utilized IC / Part	Voltage - Input (Minimum)	Voltage - Input (Maximum)	Voltage - Output	Regulator Type	Contents
Texas Instruments LP3991TL-1.8/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	1.8 V	Fixed
Texas Instruments LP3991TL-1.2EV												300 mA								Fully Populated	Board(s)	1	Single	1	LP3991	1.65 V	4 V	1.2 V	Positive Fixed	Board
Texas Instruments LP3991TL-1.2/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	1.2 V	Fixed
Texas Instruments LP3991TLX-1.2/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	1.2 V	Fixed
Texas Instruments LP3991TL-1.55/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	1.55 V	Fixed
Texas Instruments LP3991TLX-1.7/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	1.7 V	Fixed
Texas Instruments LP3991TL-2.8/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	2.8 V	Fixed
Texas Instruments LP3991TLX-2.0/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	2 V	Fixed
Texas Instruments LP3991TLX-0.8/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	0.8 V	Fixed
Texas Instruments LP3991TLX-1.7/NOPB	65 dB	1 mm	4-DSBGA	1 mm	225 µA	Over Temperature Short Circuit	0.16 V	4 V	100 µA	Enable	1	300 mA	Positive	-40 °C	85 °C	Surface Mount	4-WFBGA DSBGA	1.7 V	Fixed

Pricing

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CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

AN-1416 LP3991TL DSBGA Evaluation Board Information (Rev. B)

LP3991 300-mA LDO for Digital Applications datasheet (Rev. J)

LP3991TL-2.5/NOPB | Datasheet