LP2989

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具有电源正常指示和使能功能的 500mA、16V、低压降稳压器

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数据表

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TPS7A26

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具有电源正常指示功能的 500mA、18V、超低 IQ、高精度、可调节低压降稳压器 This is a 500-mA LDO with power good and lower IQ (2.5 μA).

LP2989

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数据表

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产品详情

Output options

Fixed Output

Iout (max) (A)

0.5

Vin (max) (V)

Vin (min) (V)

2.1

Vout (max) (V)

Vout (min) (V)

2.5

Fixed output options (V)

2.5, 2.8, 3, 3.3, 3.8, 5

Noise (µVrms)

Iq (typ) (mA)

0.11

Thermal resistance θJA (°C/W)

Rating

Catalog

Load capacitance (min) (µF)

4.7

Regulated outputs (#)

Features

Enable, Power good

Accuracy (%)

PSRR at 100 KHz (dB)

Dropout voltage (Vdo) (typ) (mV)

310

Operating temperature range (°C)

-40 to 125

Output options

Fixed Output

Iout (max) (A)

0.5

Vin (max) (V)

Vin (min) (V)

2.1

Vout (max) (V)

Vout (min) (V)

2.5

Fixed output options (V)

2.5, 2.8, 3, 3.3, 3.8, 5

Noise (µVrms)

Iq (typ) (mA)

0.11

Thermal resistance θJA (°C/W)

Rating

Catalog

Load capacitance (min) (µF)

4.7

Regulated outputs (#)

Features

Enable, Power good

Accuracy (%)

PSRR at 100 KHz (dB)

Dropout voltage (Vdo) (typ) (mV)

310

Operating temperature range (°C)

-40 to 125

SOIC (D)

29.4 mm² 4.9 x 6

VSSOP (DGK)

14.7 mm² 3 x 4.9

WSON (NGN)

16 mm² 4 x 4

2.1-V to 16-V Input Voltage Range
2.5-V to 5-V Fixed Output Voltage Options
Ultra-Low Dropout Voltage
500-mA Continuous Output Current
Very Low Output Noise With External Capacitor
< 0.8-µA Quiescent Current When Shutdown
Low Ground Pin Current at All Loads
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

2.1-V to 16-V Input Voltage Range
2.5-V to 5-V Fixed Output Voltage Options
Ultra-Low Dropout Voltage
500-mA Continuous Output Current
Very Low Output Noise With External Capacitor
< 0.8-µA Quiescent Current When Shutdown
Low Ground Pin Current at All Loads
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

The LP2989 is a fixed-output 500-mA precision LDO regulator designed for use with ceramic output capacitors.

Output noise can be reduced to 18 µV (typical) by connecting an external 10-nF capacitor to the bypass pin.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2989 delivers superior performance:

Dropout Voltage: Typically 310 mV at 500-mA load, and 1 mV at 100-µA load.
Ground Pin Current: Typically 3 mA at 500-mA load, and 110 µA at 100-µA load.
Sleep Mode: The LP2989 draws less than 0.8-µA quiescent current when SHUTDOWN pin is pulled low.
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 < 2 V, see LP2989LV (SNVS086) data sheet.

The LP2989 is a fixed-output 500-mA precision LDO regulator designed for use with ceramic output capacitors.

Output noise can be reduced to 18 µV (typical) by connecting an external 10-nF capacitor to the bypass pin.

Using an optimized Vertically Integrated PNP (VIP) process, the LP2989 delivers superior performance:

Dropout Voltage: Typically 310 mV at 500-mA load, and 1 mV at 100-µA load.
Ground Pin Current: Typically 3 mA at 500-mA load, and 110 µA at 100-µA load.
Sleep Mode: The LP2989 draws less than 0.8-µA quiescent current when SHUTDOWN pin is pulled low.
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 < 2 V, see LP2989LV (SNVS086) data sheet.

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	类型	标题		下载最新的英语版本	日期
*	数据表	LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors 数据表 (Rev. O)	PDF \| HTML		2015年 3月 10日
	选择指南	电源管理指南 2018 (Rev. K)			2018年 7月 31日
	选择指南	电源管理指南 2018 (Rev. R)			2018年 6月 25日
	选择指南	Low Dropout Regulators Quick Reference Guide (Rev. P)			2018年 3月 21日
	选择指南	低压降稳压器快速参考指南 (Rev. M)		最新英语版本 (Rev.P)	2017年 1月 5日