Datasheet > LP2989LV

LP2989LV

更新时间： 2024-11-27 02:58:15

品牌	Logo	应用领域
德州仪器 - TI		/
页数	文件大小	规格书
26页	1052K
描述
Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors

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LP2989LV

SNVS086K –MAY 2000–REVISED JULY 2015

LP2989LV Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With

Ceramic Output Capacitors

1 Features

3 Description

The LP2989LV is a fixed-output 500-mA precision

LDO regulator designed for use with ceramic output

capacitors.

•

2.1-V to 16-V Input Voltage Range

Ultra-Low Dropout Voltage

500-mA Continuous Output Current

Output noise can be reduced to 18 μV (typical) by

connecting an external 10-nF capacitor to the bypass

pin.

Very Low Output Noise With External Capacitor

< 0.8-µA Quiescent Current When Shut Down

Low Ground Pin Current at All Loads

Using an optimized Vertically Integrated PNP (VIP)

0.75% Output Voltage Accuracy (A Grade)

High Peak Current Capability (800-mA typical)

Overtemperature and Overcurrent Protection

−40°C to +125°C Junction Temperature Range

process,

the

LP2989LV

delivers

superior

performance:

Ground Pin Current: Typically 3 mA at 500-mA load,

and 110 µA at 100-µA load.

Sleep Mode: The LP2989LV draws less than 0.8-µA

quiescent current when SHUTDOWN pin is pulled

low.

2 Applications

•

Notebooks and Desktop PCs

PDAs and Palmtop Computers

Wireless Communication Pins

SMPS Post-Regulators

ERROR Flag: The built-in ERROR flag goes low

when the output drops approximately 5% below

nominal.

Precision Output: Output voltage accuracy is 0.75%

(A grade) and 1.25% (standard grade) at room

temperature.

For output voltages greater than or equal to 2 V, see

the LP2989 (SNVS083) data sheet.

Device Information⁽¹⁾

PART NUMBER

PACKAGE

WSON (8)

SOIC (8)

BODY SIZE (NOM)

4.00 mm x 4.00 mm

4.90 mm x 3.91 mm

LP2989LV

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

the end of the data sheet.

Typical Application

*Capacitance values shown are minimum required to assure stability, but may be increased without limit. Larger

output capacitor provides improved dynamic response. See the Output Capacitor section.

**Shutdown must be actively terminated (see the Shutdown Input Operation section). Tie to IN (pin 4) if not use.

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.

12 3 4 5 6 7...26

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LP2989LV 替代型号

型号	品牌	替代类型	描述	数据表
LP38691-Q1	TI	功能相似	汽车类 500mA、10V、低压降稳压器
LP38693-Q1	TI	功能相似	LP3869x/-Q1 500-mA Low-Dropout CMOS Linear Regulators Stable With Ceramic Output Capacitor
LP2989	TI	功能相似	LP2989 Micropower/Low Noise, 500 mA Ultra Low-Dropout RegulatorFor Use with Ceramic Output

与LP2989LV相关器件

型号	品牌	获取价格	描述	数据表
LP2989LV_15	TI	获取价格	Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output C
LP298AIM-2.8	NSC	获取价格	Micropower, 200 mA Ultra Low-Dropout Voltage Regulator with Programmable Power-On Reset De
LP298IM-1.8	NSC	获取价格	Micropower 500 mA Low Noise Low Dropout Regulator for Applications with Output Voltages <
LP2992	NSC	获取价格	Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages Designe
LP2992	TI	获取价格	具有使能功能的 250mA、16V、低压降稳压器
LP2992_15	TI	获取价格	Micropower 250-mA Low-Noise Ultralow-Dropout Regulator in SOT-23
LP2992AILD-1.5	NSC	获取价格	Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and LLP Packages Designe
LP2992AILD-1.5	TI	获取价格	LP2992 Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and WSON Packages
LP2992AILD-1.5/NOPB	NSC	获取价格	IC VREG 1.5 V FIXED POSITIVE LDO REGULATOR, 0.85 V DROPOUT, PDSO6, LLP-6, Fixed Positive S
LP2992AILD-1.5/NOPB	TI	获取价格	LP2992 Micropower 250 mA Low-Noise Ultra Low-Dropout Regulator in SOT-23 and WSON Packages

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