LP38693

-ADJ

IN

OUT

GND

1 PF

*

1 PF

*

R1

R2

EN

ADJ

LP38691

-ADJ

IN

OUT

GND

1 PF

*

1 PF

*

R1

R2

ADJ

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Design

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.

LP38691-ADJ, LP38693-ADJ, LP38691-ADJ-Q1, LP38693-ADJ-Q1

SNVS324K – JANUARY 2005 – REVISED JANUARY 2016

LP3869x-ADJ/Q1 500-mA Low-Dropout CMOS Linear Regulators

Stable With Ceramic Output Capacitors

1

1 Features

1

•

Wide Input Voltage Range: 2.7 V to 10 V

•

All WSON Options are Available as AEC-Q100

Grade 1

•

Output Voltage Range: 1.25 V to 9 V

•

2% Adjust (ADJ) Pin Voltage Accuracy (25°C)

•

Low Dropout Voltage: 250 mV at 500 mA

(Typical, 5-V Out)

•

Precision (Trimmed) Bandgap Reference

•

Ensured Specs for –40°C to +125°C

•

1-µA Off-State Quiescent Current

•

Thermal Overload Protection

•

Foldback Current Limiting

•

Ground (GND) Pin Current: 55 µA (Typical) at Full

Load

•

Enable (EN) Pin (LP38693-ADJ)

2 Applications

•

Hard Disk Drives

•

Notebook Computers

•

Battery-Powered Devices

•

Portable Instrumentation

3 Description

The

LP3869x-ADJ

low-dropout

CMOS

linear

regulators provide 2% precision reference voltage,

extremely low dropout voltage (250 mV at 500-mA

performance

using

ultra-low

equivalent

series

resistance (ESR) ceramic output capacitors.

The low thermal resistance of the WSON and SOT-

223 packages allow use of the full operating current

even in high ambient temperature environments.

The use of a PMOS power transistor means that no

DC base drive current is required to bias it, thus

allowing the GND-pin current to remain below 100 µA

regardless of load current, input voltage, or operating

temperature.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

LP38691-ADJ

WSON (6)

3.00 mm × 3.00 mm

LP38693-ADJ

SOT-223 (5)

6.50 mm × 3.56 mm

WSON (6)

3.00 mm × 3.00 mm

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

the end of the data sheet.

Typical Application Circuits

* Minimum value required for stability