1 Features
• AEC-Q100 qualified for automotive applications:
– Temperature grade 1: –40°C to +125°C, TA
– Device HBM ESD classification level 2
– Device CDM ESD classification level C4A
• Stable with 1μF or larger ceramic output capacitor
• Input voltage range: 2.2V to 5.5V
• Ultra-low dropout voltage: 130mV (typical) at 1A
• Excellent load transient response, even with only
1μF output capacitor
• NMOS topology delivers low reverse leakage
current
• 1% initial accuracy
• 3% overall accuracy over line, load, and
temperature
• Less than 20nA (typical) quiescent current in
shutdown mode
• Thermal shutdown and current limit for fault
protection
• Available in multiple output voltage versions

2 Applications
• Point of load regulation for DSPs, FPGAs, ASICs,
and microprocessors
• Post-regulation for switching supplies
• Portable-, battery-powered equipment

3 Description
The TPS737-Q1 linear low-dropout (LDO) voltage
regulator uses an n-type field effect transistor (NMOS)
pass transistor in a voltage-follower configuration.
This topology is relatively insensitive to output
capacitor value and ESR, allowing a wide variety
of load configurations. Load transient response is
excellent, even with a small 1μF ceramic output
capacitor. The NMOS topology also allows very low
dropout.
The TPS737-Q1 uses an advanced bipolar
complementary metal-oxide semiconductor (BiCMOS)
process. This process yields high precision and
delivers very low dropout voltages and low ground pin
current. Current consumption, when not enabled, is
under 20nA and is designed for portable applications.
This device is protected by thermal shutdown and
foldback current limit.