LP2957 Series

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

Catalog

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

Part	Voltage - Input (Max)	Control Features	Output Configuration	Current - Output	Output Type	Mounting Type	Current - Quiescent (Iq)	Package / Case	Protection Features	Operating Temperature (Max)	Operating Temperature (Min)	Voltage Dropout (Max)	Package Name	Number of Regulators	Current - Supply (Max)	Voltage - Output (Min/Fixed)	Package Leads
Texas Instruments LP2957AIT	30 V p-p	Enable	Positive	250 mA	Fixed	Through Hole	200 µA	TO-220-5 Formed Leads	Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	TO-220-5	1	33 mA	5 V
Texas Instruments LP2957AIT/NOPB	30 V p-p	Enable	Positive	250 mA	Fixed	Through Hole	200 µA	TO-220-5 Formed Leads	Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	TO-220-5	1	33 mA	5 V
Texas Instruments LP2957IT	30 V p-p	Enable	Positive	250 mA	Fixed	Through Hole	200 µA	TO-220-5 Formed Leads	Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	TO-220-5	1	33 mA	5 V
Texas Instruments LP2957ISX	30 V p-p	Enable	Positive	250 mA	Fixed	Surface Mount	200 µA		Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	D2PAK TO-263 (DDPAK-5)	1	33 mA	5 V	5 Leads
Texas Instruments LP2957IS/NOPB	30 V p-p	Enable	Positive	250 mA	Fixed	Surface Mount	200 µA		Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	D2PAK DDPAK/TO-263-5 TO-263 (DDPAK-5)	1	33 mA	5 V	5 Leads
Texas Instruments LP2957AIT	30 V p-p	Enable	Positive	250 mA	Fixed	Through Hole	200 µA	TO-220-5 Formed Leads	Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	TO-220-5	1	33 mA	5 V
Texas Instruments LP2957AISX/NOPB	30 V p-p	Enable	Positive	250 mA	Fixed	Surface Mount	200 µA		Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	D2PAK TO-263 (DDPAK-5)	1	33 mA	5 V	5 Leads
Texas Instruments LP2957AISX	30 V p-p	Enable	Positive	250 mA	Fixed	Surface Mount	200 µA		Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	D2PAK TO-263 (DDPAK-5)	1	33 mA	5 V	5 Leads
Texas Instruments LP2957IS	30 V p-p	Enable	Positive	250 mA	Fixed	Surface Mount	200 µA		Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	D2PAK TO-263 (DDPAK-5)	1	33 mA	5 V	5 Leads
Texas Instruments LP2957AIS/NOPB	30 V p-p	Enable	Positive	250 mA	Fixed	Surface Mount	200 µA		Over Current Over Temperature Reverse Polarity	125 °C	-40 °C	0.8 V	D2PAK TO-263 (DDPAK-5)	1	33 mA	5 V	5 Leads

Catalog

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

Description

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. The part has tight line and load regulation (0.04% typical) and low output temperature coefficient (20 ppm/°C typical). The accuracy of the 5V output is ensured at room temperature and over the full operating temperature range. The LP2957 is available in the five-lead TO-220 and DDPAK/TO-263 packages. 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. The part has tight line and load regulation (0.04% typical) and low output temperature coefficient (20 ppm/°C typical). The accuracy of the 5V output is ensured at room temperature and over the full operating temperature range. The LP2957 is available in the five-lead TO-220 and DDPAK/TO-263 packages.