LP2989

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Low-Dropout-Spannungsregler, 500 mA, 16 V, mit Power-Good- und Aktivierungsfunktion

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Datenblatt

document-pdfAcrobat LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors datasheet (Rev. O) (Englisch) PDF | HTML

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TPS7A26

AKTIV

Hochpräziser, einstellbarer Low-Dropout-Spannungsregler mit 500 mA, 18 V, extrem niedrigem IQ, Power This is a 500-mA LDO with power good and lower IQ (2.5 μA).

LP2989

AKTIV

Datenblatt

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Produktdetails

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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Technische Dokumentation

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Alle anzeigen 3

	Typ	Titel		Datum
*	Data sheet	LP2989 Micropower and Low-Noise, 500-mA Ultra Low-Dropout Regulator for Use With Ceramic Output Capacitors datasheet (Rev. O)	PDF \| HTML	10 Mär 2015
	Selection guide	Power Management Guide 2018 (Rev. R)		25 Jun 2018
	Selection guide	Low Dropout Regulators Quick Reference Guide (Rev. P)		21 Mär 2018

Design und Entwicklung

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