LP8340 Datasheet, PDF (1/18 Pages) National Semiconductor (TI) – Low Dropout, Low IQ, 1.0A CMOS Linear Regulator

LP8340
www.ti.com
SNVS221D – FEBRUARY 2003 – REVISED APRIL 2013
LP8340 Low Dropout, Low I_Q, 1.0A CMOS Linear Regulator
Check for Samples: LP8340
FEATURES
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•2 ±1.5% Typical V_OUT Tolerance
• 420mV Typical Dropout @ 1.0A (V_O = 5V)
• Wide Operating Range 2.7V to 10V
• Internal 1.0A PMOS Output Transistor
• 19µA Typical Quiescent Current
• Thermal Overload Limiting
• Foldback Current Limiting
• Zener Trimmed Bandgap Reference
• Space Saving WSON package
• Temperature Range
– LP8340C 0°C to 125°C
– LP8340I −40°C to 125°C
APPLICATIONS
• Hard Disk Drives
• Notebook Computers
• Battery Powered Electronics
• Portable Instrumentation
DESCRIPTION
The LP8340 low-dropout CMOS linear regulator is
available in 5V, 3.3V, 2.5V, 1.8V and adjustable
output versions. Packaged in the 6ld WSON package
and 3ld PFM. The LP8340 can deliver up to 1.0A
output current.
Typical dropout voltage is 420mV at 1.0A for the 5.0V
version, 540mV at 1.0A for the 3.3V version, 670mV
at 1.0A for the 2.5V version and 680mV at 800mA for
the 1.8V version.
The LP8340 includes a zener trimmed bandgap
voltage reference, foldback current limiting and
thermal overload limiting.
The LP8340 features a PMOS output transistor which
unlike PNP type low dropout regulators requires no
base drive current. This allows the device ground
current to remain less than 50µA over operating
temperature, supply voltage and irrespective of the
load current.
Typical Applications
V_IN
1.0µF
Ceramic
V_IN
V_OUT
V_OUT Sense
(LLP only)
V_OUT
1.0µF
Ceramic
GND
Figure 1. Fixed V_OUT
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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 © 2003–2013, Texas Instruments Incorporated