Integrated Circuits (ICs)

LP2951-33D

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100-MA, 30-V, LOW-DROPOUT VOLTAGE REGULATOR WITH POWER GOOD & ENABLE

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Search across all available documentation for this part.

DocumentsFundamental Theory of PMOS LDO Voltage Regulators (Rev. A)AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A)+13

Integrated Circuits (ICs)

LP2951-33D

Active

Texas Instruments

100-MA, 30-V, LOW-DROPOUT VOLTAGE REGULATOR WITH POWER GOOD & ENABLE

Deep-Dive with AI

DocumentsFundamental Theory of PMOS LDO Voltage Regulators (Rev. A)AN-1482 LDO Regulator Stability Using Ceramic Output Capacitors (Rev. A)+13

Specifications Series Pricing Description Documents

Technical Specifications

Parameters and characteristics for this part

Specification	LP2951-33D

Control Features	Enable
Current - Output	100 mA
Current - Quiescent (Iq)	120 µA
Current - Supply (Max) [Max]	14 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 ¯C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	Adjustable (Fixed)
Package / Case	8-SOIC
Package / Case [x]	0.154 in
Package / Case [y]	3.9 mm
Protection Features	Over Temperature, Over Current, Short Circuit
Supplier Device Package	8-SOIC
Voltage - Input (Max) [Max]	30 V
Voltage - Output (Max) [Max]	30 V
Voltage - Output (Min/Fixed)	1.235 V
Voltage - Output (Min/Fixed)	3.3 V
Voltage Dropout (Max) [Max]	0.6 V

LP2951-Q1 Series

Automotive 100mA 30V low-dropout voltage regulator with power good and enable

Part	Current - Output	Output Type	Voltage - Output (Max)	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Min/Fixed) [Min]	Voltage - Output (Min/Fixed)	Voltage - Input (Max) [Max]	Voltage Dropout (Max) [Max]	Supplier Device Package	Package / Case	Package / Case [y]	Package / Case [x]	Number of Regulators	Current - Quiescent (Iq)	Mounting Type	Output Configuration	Current - Supply (Max) [Max]	Control Features	Protection Features	Voltage - Output (Max) [Max]	Grade	Qualification	Voltage - Output (Min/Fixed)	Package / Case [custom]	Package / Case
Texas Instruments LP2951CM	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C	1.235 V	5 V	30 V	0.6 V	8-SOIC	8-SOIC	3.9 mm	0.154 in	1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit
Texas Instruments LP2951ACSDX/NOPB	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C	1.235 V	5 V	30 V	0.6 V	8-WSON (4x4)	8-WDFN Exposed Pad			1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit
Texas Instruments LP2951-50QDRGRQ1	100 mA	Adjustable (Fixed)		-40 °C	125 ¯C	1.235 V	5 V	30 V	0.6 V	8-SON (3x3)	8-WFDFN Exposed Pad			1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit	30 V	Automotive	AEC-Q100
Texas Instruments LP2951ACMX-3.0	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C		3 V	30 V	0.6 V	8-SOIC	8-SOIC	3.9 mm	0.154 in	1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit				1.235 V
Texas Instruments LP2951CSDX-3.0/NOPB	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C		3 V	30 V	0.6 V	8-WSON (4x4)	8-WDFN Exposed Pad			1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit				1.235 V
Texas Instruments LP2951ACMM-3.0	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C		3 V	30 V	0.6 V		8-MSOP 8-TSSOP			1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit				1.235 V	0.118 in	3 mm
Texas Instruments LP2951-33D	100 mA	Adjustable (Fixed)		-40 °C	125 ¯C		3.3 V	30 V	0.6 V	8-SOIC	8-SOIC	3.9 mm	0.154 in	1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit	30 V			1.235 V
Texas Instruments LP2951CM-3.3/NOPB	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C		3.3 V	30 V	0.6 V	8-SOIC	8-SOIC	3.9 mm	0.154 in	1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit				1.235 V
Texas Instruments LP2951CMM/NOPB	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C	1.235 V	5 V	30 V	0.6 V		8-MSOP 8-TSSOP			1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit					0.118 in	3 mm
Texas Instruments LP2951CM-3.0	100 mA	Adjustable (Fixed)	29 V	-40 °C	125 ¯C		3 V	30 V	0.6 V	8-SOIC	8-SOIC	3.9 mm	0.154 in	1	120 µA	Surface Mount	Positive	14 mA	Enable	Over Current Over Temperature Short Circuit				1.235 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Tube	1	$ 1.52
		10	$ 0.96
		75	$ 0.67
		150	$ 0.60
		300	$ 0.55
		525	$ 0.51
		1050	$ 0.47
		2550	$ 0.42
		5025	$ 0.40
Texas Instruments	TUBE	1	$ 0.75
		100	$ 0.58
		250	$ 0.42
		1000	$ 0.30

Description

General part information

LP2951-Q1 Series

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is anerrorflag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.