LP3875EMP-ADJ-NOPB Datasheet, PDF (1/20 Pages) Texas Instruments – Ultra Low Dropout Voltage, Load Regulation of 0.06%

LP3875-ADJ
www.ti.com
SNVS247D – SEPTEMBER 2003 – REVISED APRIL 2013
LP3875-ADJ 1.5A Fast Ultra Low Dropout Linear Regulators
Check for Samples: LP3875-ADJ
FEATURES
1
•2 Ultra Low Dropout Voltage
• Low Ground Pin Current
• Load Regulation of 0.06%
• 10nA Quiescent Current in Shutdown Mode
• Specified Output Current of 1.5A DC
• Available in DDPAK/TO-263, TO-220 and SOT-
223 Packages
• Minimum Output Capacitor Requirements
• Overtemperature/Overcurrent Protection
• −40°C to +125°C Junction Temperature Range
APPLICATIONS
• Microprocessor Power Supplies
• GTL, GTL+, BTL, and SSTL Bus Terminators
• Power Supplies for DSPs
• SCSI Terminator
• Post Regulators
• High Efficiency Linear Regulators
• Battery Chargers
• Other Battery Powered Applications
DESCRIPTION
The LP3875-ADJ fast ultra low-dropout linear
regulators operate from a +2.5V to +7.0V input
supply. These ultra low dropout linear regulators
respond very quickly to step changes in load, which
makes them suitable for low voltage microprocessor
applications. The LP3875-ADJ is developed on a
CMOS process which allows low quiescent current
operation independent of output load current. This
CMOS process also allows the LP3875-ADJ to
operate under extremely low dropout conditions.
Dropout Voltage: Ultra low dropout voltage; typically
38mV at 150mA load current and 380mV at 1.5A load
current.
Ground Pin Current: Typically 6mA at 1.5A load
current.
Shutdown Mode: Typically 10nA quiescent current
when the shutdown pin is pulled low.
Adjustable Output Voltage: The output voltage may
be programmed via two external resistors.
TYPICAL APPLICATION CIRCUIT
INPUT
*
SD
CIN
10 PF
VIN
VOUT
LP3875-ADJ
R1*
SD
ADJ
GND
R2*
OUTPUT
1.5A
CFF*
COUT
10 PF
Tantalum
*See Application Hints
V_OUT = 1.216 x (1+
R1 ₎
R2
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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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 © 2003–2013, Texas Instruments Incorporated