TPS78518BQWDRBRQ1 TI LDO Voltage Regulators Automotive,1-A, high-accuracy, adjustable low-dropout (LDO) linear regulator

1.Features
AEC-Q100 qualified for automotive applications:
–Temperature grade 1: –40°C to +125°C, TA
•Device junction temperature: –40°C to +150°C, TJ
•Input voltage range: 1.7 V to 6.0 V
•Available output voltages:
–Adjustable option: 1.2 V to 5.5 V
–Fixed options: 0.65 V to 5.0 V
•Output accuracy: 0.5% typical, 1.7% maximum
•Low IQ: 25 μA (typical)
•Ultra-low dropout:
–315 mV (max) at 1 A (3.3 VOUT)
•Internal 550 μs soft-start time to reduce inrush current
•Active output discharge
•Packages:
–3-mm × 3-mm wettable flank VSON (8)
–5-pin TO-252, RθJA = 31.6°C/W

2.Applications
•Automotive head units
•Hybrid instrument clusters
•Telematics control units
•Medium- and short-range radar
DC/DC CONVERTERS

3.Description
The TPS785-Q1 ultra low-dropout regulator (LDO) is a small, low quiescent current LDO that can source 1 A with excellent line and load transient performance
The low output noise and great PSRR performance make the device suitable to power-sensitive analog loads. The TPS785-Q1 is a flexible device for post regulation because this device supports an input voltage range from 1.7 V to 6.0 V and offers an adjustable output range of 1.2 V to 5.5 V. The device also features fixed output voltages from 0.65 V to 5.0 V for powering common voltage rails
The TPS785-Q1 offers foldback current limit to reduce power dissipation during a over current condition. The EN input helps with power sequencing requirements of the system. The internal soft-start provides a controlled start up reducing the inrush current allowing for lower input capacitance to be used
The TPS785-Q1 provides an active pulldown circuit to quickly discharge output loads when disabled

4.Typical Application Circuit

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