LP38511-ADJ_16 Datasheet, PDF (1/23 Pages) Texas Instruments – 800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage Regulator

LP38511-ADJ
www.ti.com
SNVS545D – JANUARY 2009 – REVISED APRIL 2013
LP38511-ADJ 800mA Fast-Transient Response Adjustable Low-Dropout Linear Voltage
Regulator
Check for Samples: LP38511-ADJ
FEATURES
1
•2 2.25V to 5.5V Input Voltage Range
• Adjustable Output Voltage Range of 0.5V to
3.3V
• 800mA Output Load Current
• ±2.0% Accuracy over Line, Load, and Full-
Temperature Range from -40°C to +125°C
• Stable with Tiny 10 uF Ceramic Capacitors
• Enable Pin
• Typically Less than 1uA of Ground Pin Current
with Enable Pin Low
• 25dB of PSRR at 100 kHz
• Over-Temperature and Over-Current
Protection
• 8-Pin SO PowerPad and 5-Pin PFM Surface
Mount Packages
APPLICATIONS
• Digital Core ASICs, FPGAs, and DSPs
• Servers
• Routers and Switches
• Base Stations
• Storage Area Networks
• DDR2 Memory
DESCRIPTION
The LP38511-ADJ Fast-Transient Response Low-
Dropout Voltage Regulator offers the highest-
performance in meeting AC and DC accuracy
requirements for powering Digital Cores. The
LP38511-ADJ uses a proprietary control loop that
enables extremely fast response to change in line
conditions and load demands. Output Voltage DC
accuracy is specified at 2.5% over line, load and full
temperature range from -40°C to +125°C. The
LP38511-ADJ is designed for inputs from the 2.5V,
3.3V, and 5.0V rail, is stable with 10 uF ceramic
capacitors, and has an adjustable output voltage. The
LP38511-ADJ provides excellent transient
performance to meet the demand of high
performance digital core ASICs, DSPs, and FPGAs
found in highly-intensive applications such as servers,
routers/switches, and base stations.
Typical Application Circuit
V_IN
ON
V_EN ^OFF
GND
C_IN
10 PF
Ceramic
IN
OUT
LP38511-ADJ
EN
ADJ
GND
V_OUT
R1
C_FF
C_OUT
10 PF
R2
Ceramic
GND
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.
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