LP4951C

現行

具電源良好與啟用功能的 100-mA、30-V、可調式低壓降電壓穩壓器

立即訂購

產品規格表

document-pdfAcrobat LP4950C-5V and LP4951C Adjustable Micropower Voltage Regulators datasheet (Rev. C) (英文)

LP4951C

現行

產品規格表

立即訂購

產品詳細資料

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

0.1

Vin (max) (V)

30

Vin (min) (V)

2.43

Vout (max) (V)

29

Vout (min) (V)

1.24

Fixed output options (V)

29

Rating

Catalog

Noise (µVrms)

100

PSRR at 100 KHz (dB)

13

Iq (typ) (mA)

15

Thermal resistance θJA (°C/W)

160

Load capacitance (min) (µF)

1

Regulated outputs (#)

1

Features

Enable, Power good

Accuracy (%)

3

Dropout voltage (Vdo) (typ) (mV)

430

Operating temperature range (°C)

-40 to 125

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

0.1

Vin (max) (V)

30

Vin (min) (V)

2.43

Vout (max) (V)

29

Vout (min) (V)

1.24

Fixed output options (V)

29

Rating

Catalog

Noise (µVrms)

100

PSRR at 100 KHz (dB)

13

Iq (typ) (mA)

15

Thermal resistance θJA (°C/W)

160

Load capacitance (min) (µF)

1

Regulated outputs (#)

1

Features

Enable, Power good

Accuracy (%)

3

Dropout voltage (Vdo) (typ) (mV)

430

Operating temperature range (°C)

-40 to 125

SOIC (D)

8

29.4 mm² 4.9 x 6

High Accuracy 5V Specified 100mA Output
Extremely Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load and Line Regulation
Very Low Temperature Coefficient
Use as Regulator or Reference
Needs Only 1μF for Stability
Current and Thermal Limiting

LP4951C Versions Only

Error Flag Warns of Output Dropout
Logic-controlled Electronic Shutdown
Output Pogrammable From 1.24 to 29V

All trademarks are the property of their respective owners.

High Accuracy 5V Specified 100mA Output
Extremely Low Quiescent Current
Low Dropout Voltage
Extremely Tight Load and Line Regulation
Very Low Temperature Coefficient
Use as Regulator or Reference
Needs Only 1μF for Stability
Current and Thermal Limiting

LP4951C Versions Only

Error Flag Warns of Output Dropout
Logic-controlled Electronic Shutdown
Output Pogrammable From 1.24 to 29V

All trademarks are the property of their respective owners.

The LP4950C and LP4951C are micropower voltage regulators with very low quiescent current (75μA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP4950C/LP4951C increases only slightly in dropout, prolonging battery life.

The LP4950C in the popular 3-pin TO-92 package is pin compatible with older 5V regulators. The 8-lead LP4951C is available in a plastic surface mount package and offers additional system functions.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V output or programmed from 1.24V to 29V with an external pair of resistors.

Careful design of the LP4950C/LP4951C has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

The LP4950C and LP4951C are micropower voltage regulators with very low quiescent current (75μA typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP4950C/LP4951C increases only slightly in dropout, prolonging battery life.

The LP4950C in the popular 3-pin TO-92 package is pin compatible with older 5V regulators. The 8-lead LP4951C is available in a plastic surface mount package and offers additional system functions.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V output or programmed from 1.24V to 29V with an external pair of resistors.

Careful design of the LP4950C/LP4951C has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

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