Specification	LP2957AISX/NOPB

Control Features	Enable
Current - Output	250 mA
Current - Quiescent (Iq)	200 µA
Current - Supply (Max) [Max]	33 mA
Mounting Type	Surface Mount
Number of Regulators	1
Operating Temperature [Max]	125 °C
Operating Temperature [Min]	-40 °C
Output Configuration	Positive
Output Type	1.81 mOhm
Package / Case	TO-263-6, TO-263BA, D2PAK (5 Leads + Tab)
Protection Features	Over Temperature, Reverse Polarity, Over Current
Supplier Device Package	TO-263 (DDPAK-5)
Voltage - Input (Max) [Max]	30 V
Voltage - Output (Min/Fixed)	5 V
Voltage Dropout (Max) [Max]	0.8 V

LP2957A Series

250-mA, 30-V, low-dropout voltage regulator with high accuracy & power good

Part	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Current - Output	Supplier Device Package	Output Configuration	Current - Quiescent (Iq)	Protection Features	Control Features	Mounting Type	Voltage Dropout (Max) [Max]	Output Type	Voltage - Output (Min/Fixed)	Number of Regulators	Current - Supply (Max) [Max]	Voltage - Input (Max) [Max]
Texas Instruments LP2957IT	TO-220-5 Formed Leads	125 °C	-40 °C	250 mA	TO-220-5	Positive	200 µA	Over Current Over Temperature Reverse Polarity	Enable	Through Hole	0.8 V	1.81 mOhm	5 V	1	33 mA	30 V
Texas Instruments LP2957ISX	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	125 °C	-40 °C	250 mA	TO-263 (DDPAK-5)	Positive	200 µA	Over Current Over Temperature Reverse Polarity	Enable	Surface Mount	0.8 V	1.81 mOhm	5 V	1	33 mA	30 V
Texas Instruments LP2957AISX/NOPB	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	125 °C	-40 °C	250 mA	TO-263 (DDPAK-5)	Positive	200 µA	Over Current Over Temperature Reverse Polarity	Enable	Surface Mount	0.8 V	1.81 mOhm	5 V	1	33 mA	30 V
Texas Instruments LP2957AISX	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	125 °C	-40 °C	250 mA	TO-263 (DDPAK-5)	Positive	200 µA	Over Current Over Temperature Reverse Polarity	Enable	Surface Mount	0.8 V	1.81 mOhm	5 V	1	33 mA	30 V
Texas Instruments LP2957AIS/NOPB	D2PAK (5 Leads + Tab) TO-263-6 TO-263BA	125 °C	-40 °C	250 mA	TO-263 (DDPAK-5)	Positive	200 µA	Over Current Over Temperature Reverse Polarity	Enable	Surface Mount	0.8 V	1.81 mOhm	5 V	1	33 mA	30 V

Pricing

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

Distributor	Package	Quantity	$

Digikey	Cut Tape (CT)	1	$ 4.24
		10	$ 3.81
		25	$ 3.60
		100	$ 3.12
		250	$ 2.96
	Digi-Reel®	1	$ 4.24
		10	$ 3.81
		25	$ 3.60
		100	$ 3.12
		250	$ 2.96
	Tape & Reel (TR)	500	$ 2.65
		1000	$ 2.24
		2500	$ 2.13
Texas Instruments	LARGE T&R	1	$ 3.20
		100	$ 2.80
		250	$ 1.97
		1000	$ 1.58

Description

General part information

LP2957A Series

The LP2957 is a 5V micropower voltage regulator with electronic shutdown, error flag, very low quiescent current (150 µA typical at 1 mA load), and very low dropout voltage (470 mV typical at 250 mA load current).

Output can be wired for snap-on/snap-off operation to eliminate transition voltage states where µP operation may be unpredictable.

Output crowbar (50 mA typical pull-down current) will bring down the output quickly when the regulator snaps off or when the shutdown function is activated.

Documents

Technical documentation and resources

LP2957/LP2957A 5V Low-Dropout Regulator for µP Applications datasheet (Rev. C)

Data sheet