1 Features
1• Input Voltage: 2.7 V to 6.5 V
• 500-mA Low-Dropout Regulator With EN
• Low IQ: 45 μA
• Multiple Output Voltage Versions Available:
– Fixed Outputs of 1.2 V to 4.3 V
– Adjustable Outputs from 1.25 V to 6 V
• High PSRR: 68 dB at 1 kHz
• Low Noise: 13.2 μVRMS
• Fast Start-Up Time: 45 μs
• Stable With a Ceramic, 2.2-μF, Low-ESR Output
Capacitor
• Excellent Load and Line Transient Response
• 2% Overall Accuracy (Load, Line, and
Temperature, VOUT > 2.2 V)
• Very Low Dropout: 280 mV at 500 mA
• 2-mm × 2-mm WSON-6 and
3-mm × 3-mm SON-8 Packages

2 Applications
• Post DC-DC Converter Ripple Filtering
• IP Network Cameras
• Macro Base Stations
• Thermostats

3 Description
The TPS735 low-dropout (LDO), low-power linear
regulator offers excellent AC performance with very
low ground current. High power-supply rejection ratio
(PSRR), low noise, fast start-up, and excellent line
and load transient responses are provided while
consuming a very low 45-μA (typical) ground current.
The TPS735 device is stable with ceramic capacitors
and uses an advanced BiCMOS fabrication process
to yield a typical dropout voltage of 280 mV at 500-
mA output. The TPS735 device uses a precision
voltage reference and feedback loop to achieve
overall accuracy of 2% (VOUT > 2.2 V) over all load,
line, process, and temperature variations. This device
is fully specified from TJ = –40°C to +125°C and is
offered in a low-profile, 3 mm × 3 mm SON-8
package and a 2 mm × 2 mm WSON-6 package.