LP3986TLX-2828 National Semiconductor, LP3986TLX-2828 Datasheet

LP3986TLX-2828

Manufacturer Part Number

LP3986TLX-2828

Description

Manufacturer

National Semiconductor

Datasheets

1.LP3986TLX-2828.pdf (12 pages)

2.LP3986TLX-2828.pdf (13 pages)

3.LP3986TLX-2828.pdf (13 pages)

Specifications of LP3986TLX-2828

Date_code

05+

Packing_info

0805

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LP3986TLX-2828-NOPB

Manufacturer:

NSC

Quantity:

6 011

Company:

BOSTOCK HK LIMITED

Part Number:

LP3986TLX-2828/NOPB

Manufacturer:

Texas Instruments

Quantity:

10 000

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LP3986

Dual Micropower 150 mA Ultra Low-Dropout CMOS Voltage

Regulators in micro SMD Package

General Description

The LP3986 is a 150 mA dual low dropout regulator designed

for portable and wireless applications with demanding perfor-

mance and board space requirements.

The LP3986 is stable with a small 1 µF ±30% ceramic output

capacitor requiring smallest possible board space.

The LP3986's performance is optimized for battery powered

systems to deliver ultra low noise, extremely low dropout volt-

age and low quiescent current independent of load current.

Regulator ground current increases very slightly in dropout,

further prolonging the battery life. Optional external bypass

capacitor reduces the output noise further without slowing

down the load transient response. Fast start-up time is

achieved by utilizing a speed-up circuit that actively pre-

charges the bypass capacitor. Power supply rejection is bet-

ter than 60 dB at low frequencies and 55 dB at 10 kHz. High

power supply rejection is maintained at low input voltage lev-

els common to battery operated circuits.

The LP3986 is available in a micro SMD package. Perfor-

mance is specified for a −40°C to +125°C temperature range.

For single LDO applications, please refer to the LP3985

datasheet.

Typical Application Circuit

200034

Features

■

Key Specifications

■

Applications

■

Miniature 8-I/O micro SMD package

Stable with 1µF ceramic and high quality tantalum output

capacitors

Fast turn-on

Two independent regulators

Logic controlled enable

Over current and thermal protection

Guaranteed 150 mA output current per regulator

1nA typical quiescent current when both regulators in

shutdown mode

60 mV typical dropout voltage at 150 mA output current

115 µA typical ground current

40 µV typical output noise

200 µs fast turn-on circuit

−40°C to +125°C junction temperature

CDMA cellular handsets

GSM cellular handsets

Portable information appliances

Portable battery applications

20003401

February 2007

www.national.com

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