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LP2957A

Texas Instruments
Part Number LP2957A
Manufacturer Texas Instruments
Description 5V Low-Dropout Regulator
Published Jul 26, 2021
Detailed Description LP2957, LP2957A www.ti.com SNVS102C – JUNE 1998 – REVISED APRIL 2013 LP2957/LP2957A 5V Low-Dropout Regulator for µP A...
Datasheet PDF File LP2957A PDF File

LP2957A
LP2957A

Overview
LP2957, LP2957A www.
ti.
com SNVS102C – JUNE 1998 – REVISED APRIL 2013 LP2957/LP2957A 5V Low-Dropout Regulator for µP Applications Check for Samples: LP2957, LP2957A FEATURES 1 •2 5V Output within 1.
4% Over Temperature (A Grade) • Easily Programmed for Snap-On/Snap-Off Output • Ensured 250 mA Output Current • Extremely Low Quiescent Current • Low Input-Output Voltage Required for Regulation • Reverse Battery Protection • Extremely Tight Line and Load Regulation • Very Low Temperature Coefficient • Current and Thermal Limiting • Error Flag Signals when Output is out of Regulation APPLICATIONS • High-Efficiency Linear Regulator • Battery-Powered Regulator 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.
Package Outline Top View Top View Figure 1.
Bent, Staggered Leads 5-Lead TO-220 Package See Package Number NDH0005D Figure 2.
Plastic Surface Mount Package 5-Lead DDPAK/TO-263 Package See Package Number KTT0005B Side View Figure 3.
See Package Number KTT0005B These devices have limited built-in ESD protection.
The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
1 Please be aware that an important notice co...


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