LP3981

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Hochpräziser Low-Dropout-Spannungsregler, 300 mA, mit Aktivierungsfunktion

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Datenblatt

document-pdfAcrobat LP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator datasheet (Rev. H) (Englisch) PDF | HTML

LP3981

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Output options

Fixed Output

Iout (max) (A)

0.3

Vin (max) (V)

6

Vin (min) (V)

2.7

Vout (max) (V)

3.3

Vout (min) (V)

2.5

Fixed output options (V)

2.5, 2.7, 2.8, 2.83, 3, 3.3

Noise (µVrms)

35

Iq (typ) (mA)

0.07

Thermal resistance θJA (°C/W)

57

Rating

Catalog

Load capacitance (min) (µF)

2.2

Regulated outputs (#)

1

Features

Enable

Accuracy (%)

2

PSRR at 100 KHz (dB)

25

Dropout voltage (Vdo) (typ) (mV)

132

Operating temperature range (°C)

-40 to 125

Output options

Fixed Output

Iout (max) (A)

0.3

Vin (max) (V)

6

Vin (min) (V)

2.7

Vout (max) (V)

3.3

Vout (min) (V)

2.5

Fixed output options (V)

2.5, 2.7, 2.8, 2.83, 3, 3.3

Noise (µVrms)

35

Iq (typ) (mA)

0.07

Thermal resistance θJA (°C/W)

57

Rating

Catalog

Load capacitance (min) (µF)

2.2

Regulated outputs (#)

1

Features

Enable

Accuracy (%)

2

PSRR at 100 KHz (dB)

25

Dropout voltage (Vdo) (typ) (mV)

132

Operating temperature range (°C)

-40 to 125

VSSOP (DGK)

8

14.7 mm² 3 x 4.9

WSON (NGC)

6

12 mm² 3 x 4

2.5-V to 6-V Input Range
300-mA Output Current
60-dB PSRR at 1 kHz
≤ 1-µA Quiescent Current When Shut Down
Fast Turnon Time: 120 µs (typical) with C_BYPASS =
0.01 µF
132-mV Typical Dropout with 300-mA Load
35-µVrms Output Noise Over 10 Hz to 100 kHz
Logic Controlled Enable
Stable With Ceramic and High-Quality Tantalum
Capacitors
Thermal Shutdown and Short-Circuit Current Limit
Low Thermal Resistance in WSON-6 Package
Gives Excellent Power Capability

2.5-V to 6-V Input Range
300-mA Output Current
60-dB PSRR at 1 kHz
≤ 1-µA Quiescent Current When Shut Down
Fast Turnon Time: 120 µs (typical) with C_BYPASS =
0.01 µF
132-mV Typical Dropout with 300-mA Load
35-µVrms Output Noise Over 10 Hz to 100 kHz
Logic Controlled Enable
Stable With Ceramic and High-Quality Tantalum
Capacitors
Thermal Shutdown and Short-Circuit Current Limit
Low Thermal Resistance in WSON-6 Package
Gives Excellent Power Capability

Performance of the LP3981 device is optimized for battery-powered systems to deliver ultra-low-noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low frequencies. This high power supply rejection is maintained down to lower input voltage levels common to battery-operated circuits.

The device is ideal for mobile phone and similar battery-powered wireless applications. It provides up to 300 mA, from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode.

The LP3981 is available in 8-pin VSSOP-8 and 6-pin WSON packages. Performance is specified for −40°C to +125°C temperature range. The device available in the following output voltages: 2.5 V, 2.7 V, 2.8 V, 2.83 V, 3 V, 3.03 V and 3.3 V as standard. Other output options can be made available; contact your local TI sales office for more information.

Performance of the LP3981 device is optimized for battery-powered systems to deliver ultra-low-noise, extremely low dropout voltage, and low quiescent current. Regulator ground current increases only slightly in dropout, further prolonging the battery life.

Power supply rejection is better than 60 dB at low frequencies. This high power supply rejection is maintained down to lower input voltage levels common to battery-operated circuits.

The device is ideal for mobile phone and similar battery-powered wireless applications. It provides up to 300 mA, from a 2.5-V to 6-V input, consuming less than 1 µA in disable mode.

The LP3981 is available in 8-pin VSSOP-8 and 6-pin WSON packages. Performance is specified for −40°C to +125°C temperature range. The device available in the following output voltages: 2.5 V, 2.7 V, 2.8 V, 2.83 V, 3 V, 3.03 V and 3.3 V as standard. Other output options can be made available; contact your local TI sales office for more information.

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	Typ	Titel		Datum
*	Data sheet	LP3981 Micropower, 300-mA Ultra-Low-Dropout CMOS Voltage Regulator datasheet (Rev. H)	PDF \| HTML	18 Jul 2015

Design und Entwicklung

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The PMP10613 reference design provides all the power supply rails necessary to power Xilinx® Zynq® 7000 series (XC7Z045) FPGA. This design uses several LMZ3 series modules, LDOs, and a DDR termination regulator to provide all the necessary rails to power the FPGA. It (...)

Test report: PDF

Schaltplan: PDF

Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
VSSOP (DGK)	8	Ultra Librarian
WSON (NGC)	6	Ultra Librarian

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LP3981

Hochpräziser Low-Dropout-Spannungsregler, 300 mA, mit Aktivierungsfunktion

LP3981

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