LP3987 Datasheet

IC型号：
LP3987
PDF描述：
Micropower micro SMD 150 mA Ultra Low-Dropout CMOS Voltage R...
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533.04KB
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NSC

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LP3987 Micropower micro SMD 150 mA Ultra Low-Dropout CMOS Voltage Regulators with sleep

MODE

February 2003

LP3987

Micropower micro SMD 150 mA Ultra Low-Dropout

CMOS Voltage Regulators with sleep MODE

General Description

The LP3987 is a 150mA fixed output voltage regulator with

very low dropout voltage designed specially to meet require-

ments of battery-powered applications. The additional sleep

MODE feature will reduce current consumption during

standby operation to prolong the usage of battery.

Dropout Voltage:

100mV maximum dropout with 150mA

load.

Shutdown:

Less than 1碌A quiescent current.

Sleep Mode:

Typically 14碌A quiescent current during sleep

MODE to reduce battery consumption.

Enhanced Stability:

The LP3987 is stable with minimum

1碌F

卤

20% low ESR ceramic output capacitor as low as 5m鈩?/div>

and high quality tantalum capacitors.

The LP3987 is available in thin and thick 5 Bump micro SMD

package. Performance is specified for 鈭?0藲C to 125藲C.

This device is available with output voltage options of 2.6V,

2.8V, & 2.85V. For other voltage options, please contact

National Semiconductor Corporation.

Features

Miniature 5-I/O micro SMD package

Stable with ceramic and high quality tantalum output

capacitors

Logic controlled enable

Thermal Shutdown and short-circuit current limit

Key Specifications

2.7 to 6.0V input range

Guaranteed 150 mA output current

1碌A quiescent current on shutdown

100 mV maximum dropout with 150 mA load

50dB PSRR at 10KHz

Sleep MODE features

Over temperature & over current protection

鈭?0藲C to +125藲C junction temperature range for

operation

Applications

CDMA cellular handsets

Wideband CDMA cellular handsets

GSM cellular handsets

Portable information appliances

碌P/DSP Power Supplies

Digital Cameras

SRAM Backup

Typical Application Circuit

20022201

漏 2003 National Semiconductor Corporation

DS200222

www.national.com

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