LP38692

IN

OUT

SNS

**

GND

1 PF

*

1 PF

*

VOUT

VIN

VEN

EN

LP38690

IN

OUT

SNS

**

GND

VOUT

VIN

1 µF*

1 µF*

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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.

LP38690, LP38692

SNVS322M – DECEMBER 2004 – REVISED DECEMBER 2015

LP38690, LP38692 1-A Low Dropout CMOS Linear Regulators

Stable with Ceramic Output Capacitors

1

1 Features

1

•

Wide Input Voltage Range (2.7 V to 10 V)

•

2.5% Output Accuracy (25°C)

•

Low Dropout Voltage: 450 mV at 1 A

(typical, 5 VOUT)

•

Precision (Trimmed) Bandgap Reference

•

Ensured Specifications for –40°C to 125°C

•

1-µA Off-State Quiescent Current

•

Thermal Overload Protection

•

Foldback Current Limiting

•

3-Lead TO-252, 5-Lead SOT-223, and 6-Bump

WSON Packages

•

Enable Pin (LP38692)

•

Ground Pin Current: 55 µA (typical) at Full Load

•

Precision Output Voltage: 2.5% (25°C) Accuracy

2 Applications

•

Hard Disk Drives

•

Notebook Computers

•

Battery Powered Devices

•

Portable Instrumentation

3 Description

The LP38690 and LP38692 low-dropout CMOS linear

regulators

provide

tight

output

tolerance

(2.5%

typical), extremely low dropout voltage (450 mV at a

1-A load current, VOUT = 5 V), and excellent AC

performance utilizing ultra low ESR ceramic output

capacitors.

The low thermal resistance of the WSON, SOT-223,

and TO-252 packages allow the full operating current

to be used 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 allowing

ground

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)

LP38690

TO-252 (3)

6.58 mm x 6.10 mm

WSON (6)

3.00 mm x 3.00 mm

LP38692

SOT-223 (5)

6.50 mm x 3.56 mm

WSON (6)

3.00 mm x 3.00 mm

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

the end of the data sheet.

Simplified Schematic for LP38690

* Minimum value required for stability.

**WSON package devices only.

Simplified Schematic for LP38692

* Minimum value required for stability.

**WSON package devices only.