LP2954A_15 Datasheet, PDF (1/24 Pages) Texas Instruments – LP2954/LP2954A 5V and Adjustable Micropower Low-Dropout Voltage Regulators

LP2954, LP2954A
www.ti.com
SNVS096D – JUNE 1999 – REVISED MARCH 2013
LP2954/LP2954A 5V and Adjustable Micropower Low-Dropout Voltage Regulators
Check for Samples: LP2954, LP2954A
FEATURES
1
•2 5V Output within 1.2% Over Temperature
(A Grade)
• Adjustable 1.23 to 29V Output Voltage
Available (LP2954IM and LP2954AIM)
• Ensured 250 mA Output Current
• Extremely Low Quiescent Current
• Low Dropout Voltage
• Reverse Battery Protection
• Extremely Tight Line and Load Regulation
• Very Low Temperature Coefficient
• Current and Thermal Limiting
• Pin Compatible with LM2940 and LM340
(5V Version Only)
• Adjustable Version Adds Error Flag to Warn of
Output Drop and a Logic-Controlled Shutdown
APPLICATIONS
• High-Efficiency Linear Regulator
• Low Dropout Battery-Powered Regulator
DESCRIPTION
The LP2954 is a 5V micropower voltage regulator
with very low quiescent current (90 μA typical at 1 mA
load) and very low dropout voltage (typically 60 mV at
light loads and 470 mV at 250 mA load current).
The quiescent current increases only slightly at
dropout (120 μA typical), which prolongs battery life.
The LP2954 with a fixed 5V output is available in the
three-lead TO-220 and DDPAK/TO-263 packages.
The adjustable LP2954 is provided in an 8-lead
surface mount, small outline package. The adjustable
version also provides a resistor network which can be
pin strapped to set the output to 5V.
Reverse battery protection is provided.
The tight line and load regulation (0.04% typical), as
well as very low output temperature coefficient make
the LP2954 well suited for use as a low-power
voltage reference.
Output accuracy is ensured at both room temperature
and over the entire operating temperature range.
Package Outline and Ordering Information
Figure 1. TO-220 3–Lead Plastic Package (Front
View)
Figure 2. SO-8 Small Outline Surface Mount (Top
View)
Figure 3. TO-263 3-Lead Plastic Surface-Mount
Package (Top View)
Figure 4. TO-263 3-Lead Plastic Surface-Mount
Package (Side View)
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
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2013, Texas Instruments Incorporated