LP3874 0.8A Fast Ultra Low Dropout Linear Regulators

LP3874-ADJ Adjustable Output Version
LP38841-ADJ 75mV Dropout, Adjustable Output, 5.5Vin Max
LP38851 New! National's LP38k Family Of High
LP38852 Performance LDOs Power Digital ICs
LP38853 See More At LDO.NATIONAL.COM
LP3874 特性Features

LP3874 概述Description

Paramaters / Values LP3874 LP3874-ADJ LP38841-ADJ LP38851 LP38852 LP38853
Output Current 800 mA 800 mA 800 mA 800 mA 1500 mA 3000 mA
Output Min 1.8, 2.5, 3.3, 5 Volt 1.216 Volt 0.56 Volt 0.80 Volt 0.8 Volt 0.8 Volt
Input Min Voltage 2.5 Volt 2.5 Volt 0.635 Volt 0.915 Volt 0.93 Volt 1.04 Volt
Input Max Voltage 7 Volt 7 Volt 5.5 Volt 5.5 Volt 5.5 Volt 5.5 Volt
Dropout Voltage 0.24 Volt 0.24 Volt 0.075 Volt 0.115 Volt 0.130 Volt 0.240 Volt
Adjustable Output No Yes Yes Yes Yes Yes
Quiescent Current 5 mA 6 mA 32 mA 10 mA 10 mA 10 mA
On/Off Pin Yes Yes Yes Yes Yes Yes
Error Flag No No No No No No
RegType LDO LDO LDO LDO LDO LDO
Temperature Min -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C -40 deg C
Temperature Max 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C 125 deg C
Output Voltage 1.8, 2.5, 3.3, 5 Volt
Output Max 1.8, 2.5, 3.3, 5 Volt 6.76 Volt 1.5 Volt 1.80 Volt 1.8 Volt 1.8 Volt

The LP3871/LP3874 series of fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. Wide range of preset output voltage options are available. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. The LP3871/LP3874 are developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3871/LP3874 to operate under extremely low dropout conditions.

Dropout Voltage: Ultra low dropout voltage; typically 24mV at 80mA load current and 240mV at 0.8A load current.

Ground Pin Current: Typically 6mA at 0.8A load current.

Shutdown Mode: Typically 10nA quiescent current when the shutdown pin is pulled low.

Error# Flag: Error# flag goes low when the output voltage drops 10% below nominal value.

SENSE: Sense pin improves regulation at remote loads.

Precision Output Voltage: Multiple output voltage options are available ranging from 1.8V to 5.0V with a guaranteed accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).

LP3874 应用Applications

LP3874 功能框图Diagrams

LP3874

LP3874

LP3874

芯片订购型号
Part Number(s) (NSID) Top View Availability Budgetary Pricing Pack Size
LP3874EMP-1.8/NOPB
LP3874EMP-1.8
SOT-223 Full production Lead Time: 16 weeks $1.01 each at 1K+ pcs reel of 1000
LP3874EMP-2.5/NOPB
LP3874EMP-2.5
SOT-223 Full production Lead Time: 16 weeks $1.01 each at 1K+ pcs reel of 1000
LP3874EMP-3.3/NOPB
LP3874EMP-3.3
SOT-223 Full production Lead Time: 16 weeks $1.01 each at 1K+ pcs reel of 1000
LP3874EMP-5.0/NOPB
LP3874EMP-5.0
SOT-223 Full production Lead Time: 16 weeks $1.01 each at 1K+ pcs reel of 1000
LP3874EMPX-1.8/NOPB
LP3874EMPX-1.8
SOT-223 Full production Lead Time: 12 weeks $1.01 each at 1K+ pcs reel of 2000
LP3874EMPX-2.5/NOPB
LP3874EMPX-2.5
SOT-223 Full production Lead Time: 12 weeks $1.01 each at 1K+ pcs reel of 2000
LP3874EMPX-3.3/NOPB
LP3874EMPX-3.3
SOT-223 Full production Lead Time: 12 weeks $1.01 each at 1K+ pcs reel of 2000
LP3874EMPX-5.0/NOPB
LP3874EMPX-5.0
SOT-223 Full production Lead Time: 16 weeks $1.01 each at 1K+ pcs reel of 2000
LP3874ES-2.5/NOPB
LP3874ES-2.5

TO-263
Full production Lead Time: 16 weeks $1.22 each at 1K+ pcs rail of 45
LP3874ES-3.3/NOPB
LP3874ES-3.3

TO-263
Full production Lead Time: 16 weeks $1.22 each at 1K+ pcs rail of 45
停产产品Obsolete Versions
Obsolete Part Alternate Part or Supplier Source Last Time Buy Date
LP3874ES-1.8 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ES-5.0 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ESX-1.8 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ESX-2.5 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ESX-3.3 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ESX-5.0 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ET-1.8 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ET-2.5 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ET-3.3 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ET-5.0 NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874ET-ADJ NONE NATIONAL SEMICONDUCTOR 01 Dec 2009
LP3874 应用技术支持与电子电路设计开发资源下载 Documents