LP3981

現行

具啟用功能的 300-mA 高準確度低壓降電壓穩壓器

立即訂購

產品規格表

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

LP3981

現行

產品規格表

立即訂購

產品詳細資料

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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