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0.5V/div
V
OUT
V
EN
1V/div
Time(2ms/div)
C
SS
=5600pF
C
SS
=560pF
C
SS
=0nF
3.8V
1.8V
TPS74701
GND
EN
FB
IN PG
BIAS
SS
OUT
V
IN
R
1
R
2
R
3
C
OUT
C
IN
C
SS
V
BIAS
C
BIAS
V
OUT
TPS74701-Q1
www.ti.com
SBVS141A –APRIL 2010–REVISED SEPTEMBER 2010
500-mA LOW-DROPOUT LINEAR REGULATOR WITH PROGRAMMABLE SOFT-START
Check for Samples: TPS74701-Q1
1
FEATURES
DESCRIPTION
• Qualified for Automotive Applications
The TPS74701 low-dropout (LDO) linear regulator
• V
OUT
Range: 0.8 V to 3.6 V
provides an easy-to-use, robust power management
• Ultralow V
IN
Range: 0.8 V to 5.5 V
solution for a wide variety of applications.
• V
BIAS
Range 2.7 V to 5.5 V
User-programmable soft-start minimizes stress on the
input power source by reducing capacitive inrush
• Low Dropout: 50 mV typ at 500 mA, V
BIAS
= 5 V
current on start-up. The soft-start is monotonic and
• Power Good (PG) Output Allows Supply
well-suited for powering many different types of
Monitoring or Provides a Sequencing Signal
processors and ASICs. The enable input and power
for Other Supplies
good output allow easy sequencing with external
• 2% Accuracy Over Line/Load/Temperature
regulators. This complete flexibility permits the user to
configure a solution that meets the sequencing
• Programmable Soft-Start Provides Linear
requirements of FPGAs, DSPs, and other
Voltage Startup
applications with special start-up requirements.
• V
BIAS
Permits Low V
IN
Operation with Good
A precision reference and error amplifier deliver 2%
Transient Response
accuracy over load, line, temperature, and process.
• Stable with Any Output Capacitor ≥ 2.2 mF
The device is stable with any type of capacitor
• Available in a Small 3mm × 3mm × 1mm
greater than or equal to 2.2mF, and is fully specified
SON-10 Package
from –40°C to +125°C. The TPS74701 is offered in a
small 3mm × 3mm SON-10 package for compatibility
with the TPS74801.
APPLICATIONS
• FPGA Applications
• DSP Core and I/O Voltages
• Post-Regulation Applications
• Applications with Special Start-Up Time or
Sequencing Requirements
• Hot-Swap and Inrush Controls
Figure 2. Turn-On Response
Figure 1. Typical Application Circuit (Adjustable)
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright © 2010, Texas Instruments Incorporated
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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