IN

OUT

FB

GND

TPS79801

R

1

V

IN

V

OUT

R

2

C

1

V

= 1.275 V (1 + R / R ) + I R

V

= 1.275 V

I

= 0.2 µA at 25°C

Output Range = 1.275 V to 28 V

OUT

2

1

FB

2

FB

FB

EN

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TPS79801-Q1, TPS79850-Q1

SLVS822E – MARCH 2009 – REVISED SEPTEMBER 2015

TPS798xx-Q1 50 mA, 3 V to 50 V, Micropower, Low-Dropout Linear Regulator

1 Features

3 Description

The TPS798xx-Q1 is the first device in a line of 50-V

1

•

Qualified for Automotive Applications

high-voltage micropower low-dropout (LDO) linear

•

Wide Input Voltage Range: 3 V to 50 V

regulators. This device is capable of supplying 50-mA

•

Low Quiescent Current: 40

μA (Typical)

output current with a dropout voltage of only 300 mV.

Designed for low quiescent current high voltage (50

•

Low Dropout Voltage: 300 mV (Typical)

V) applications, 40

μA operating and 1 μA in

•

Output Current: 50 mA

shutdown makes the TPS798xx-Q1 an ideal choice

•

No Input Protection Diodes Needed

for

battery-powered

or

high-voltage

systems.

Quiescent current is also well-controlled in dropout.

•

Adjustable Output From 1.275 V to 28 V

•

1-

μA Quiescent Current in Shutdown

Other features of the TPS798xx-Q1 include the ability

to operate with low equivalent series resistance

•

Stable With 1-

μF Output Capacitor

(ESR) ceramic output capacitors. This device is

•

Stable With Aluminum, Tantalum, or Ceramic

stable with only 1

μF on the output; most older

Capacitors

devices require from 10-

μF to 100-μF tantalum

•

Reverse Input-Battery Protection

capacitors for stability. Small ceramic capacitors can

be used without the necessary addition of ESR, as is

•

Reverse Output Current Flow Protection

common with other regulators. Internal protection

•

Thermal Limiting

circuitry includes reverse input-battery protection,

•

Available in an 8-Pin MSOP-PowerPAD IC

reverse output current protection, current limiting, and

Package

thermal limiting to protect the device in various fault

conditions.

2 Applications

This device is available in a fixed output voltage of 5

•

Low-Current, High-Voltage Regulators

V (TPS79850) and with an adjustable output voltage

with a 1.275-V reference voltage (TPS79801). The

•

Regulators for Battery-Powered Systems

TPS798xx-Q1 regulator is available in a 8-pin MSOP-

•

Telecom

PowerPAD (DGN) package with an exposed pad for

•

Automotives

enhanced thermal management capability.

Device Information(1)

PART

PACKAGE

BODY SIZE (NOM)

NUMBER

TPS79801-Q1

MSOP-PowerPAD (8)

3.00 mm × 3.00 mm

TPS79850-Q1

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Simplified Schematic

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.