EN

IN

OUT

GND

1 PF

1 PF

INPUT

ENABLE

GND

OUTPUT

LP5907

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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.

LP5907

SNVS798J – APRIL 2012 – REVISED MARCH 2016

LP5907 Ultralow-Noise, 250-mA Linear Regulator for RF and Analog Circuits - Requires

No Bypass Capacitor

1

1 Features

1

•

Input Voltage Range: 2.2 V to 5.5 V

•

Output Voltage Range: 1.2 V to 4.5 V

•

Output Current: 250 mA

•

Stable with 1-µF Ceramic Input and Output

Capacitors

•

No Noise Bypass Capacitor Required

•

Remote Output Capacitor Placement

•

Thermal-Overload and Short-Circuit Protection

•

–40°C to 125°C Junction Temperature Range for

Operation

•

•

PSRR: 82 dB at 1 kHz

•

Output Voltage Tolerance: ±2%

•

Virtually Zero IQ (Disabled): < 1 µA

•

•

Start-up Time: 80 µs

•

Low Dropout: 120 mV (typical)

2 Applications

•

Cellular Phones

•

PDA Handsets

•

Wireless LAN Devices

3 Description

The LP5907 is a linear regulator capable of supplying

250-mA

output

current.

Designed

to

meet

the

requirements of RF and analog circuits, the LP5907

device provides low noise, high PSRR, low quiescent

current, and low line or load transient response

figures. Using new innovative design techniques, the

LP5907

offers

class-leading

noise

performance

without a noise bypass capacitor and the ability for

remote output capacitor placement.

The device is designed to work with a 1-µF input and

a 1-µF output ceramic capacitor (no separate noise

bypass capacitor is required).

This device is available with fixed output voltages

from 1.2 V to 4.5 V in 25-mV steps. Contact Texas

Instruments Sales for specific voltage option needs.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE

LP5907

DSBGA (4)

0.675 mm × 0.675 mm (MAX)

SOT-23 (5)

2.90 mm × 1.60 mm (NOM)

X2SON (4)

1.00 mm × 1.00 mm (NOM)

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

the end of the data sheet.

Simplified Schematic