LM3411

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Regulador secundario de precisión y controlador

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document-pdfAcrobat LM3411 Precision Secondary Regulator and Driver datasheet (Rev. F) (Inglés) PDF | HTML

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LM3411

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Detalles del producto

VO (V)

3.3, 5

Initial accuracy (max) (%)

0.5, 1, 11

VO adj (min) (V)

3.3

VO adj (max) (V)

5

Iz for regulation (min) (µA)

85

Reference voltage (V)

Fixed

Rating

Catalog

Temp coeff (max) (ppm/°C)

61

Operating temperature range (°C)

-40 to 85

Iout/Iz (max) (mA)

15

VO (V)

3.3, 5

Initial accuracy (max) (%)

0.5, 1, 11

VO adj (min) (V)

3.3

VO adj (max) (V)

5

Iz for regulation (min) (µA)

85

Reference voltage (V)

Fixed

Rating

Catalog

Temp coeff (max) (ppm/°C)

61

Operating temperature range (°C)

-40 to 85

Iout/Iz (max) (mA)

15

SOT-23 (DBV)

5

8.12 mm² 2.9 x 2.8

Fixed Voltages of 3.3 V and 5 V With Initial
Tolerance of ±1% for Standard Grade and ±0.5%
for A Grade
Custom Voltages Available (3 V to 17 V)
Wide Output Current Range (20 µA to 15 mA)
Low Temperature Coefficient
Available in 5-Pin SOT-23 Surface-Mount
Package (Tape and Reel)

Fixed Voltages of 3.3 V and 5 V With Initial
Tolerance of ±1% for Standard Grade and ±0.5%
for A Grade
Custom Voltages Available (3 V to 17 V)
Wide Output Current Range (20 µA to 15 mA)
Low Temperature Coefficient
Available in 5-Pin SOT-23 Surface-Mount
Package (Tape and Reel)

The LM3411 is a low-power fixed-voltage (3.3 V or 5 V) precision shunt regulator designed specifically for driving an optoisolator to provide feedback isolation in a switching regulator.

The LM3411 circuitry includes an internally compensated operational amplifier, a bandgap reference, NPN output transistor, and voltage setting resistors.

A trimmed precision bandgap reference with temperature drift curvature correction provides a ensured 1% precision over the operating temperature range (A grade version). The inverting input of the amplifier is externally accessible for loop frequency compensation when used as part of a larger servo system. The output is an open-emitter NPN transistor capable of driving up to 15 mA of load current.

Because of its small die size, the LM3411 has been made available in the subminiature 5-pin SOT-23 surface-mount package. This package is ideal for use in space-critical applications.

Although its main application is to provide a precision output voltage (no trimming required) and maintain very good regulation in isolated DC-DC converters, it can also be used with other types of voltage regulators or power semiconductors to provide a precision output voltage without precision resistors or trimming.

The LM3411 is a low-power fixed-voltage (3.3 V or 5 V) precision shunt regulator designed specifically for driving an optoisolator to provide feedback isolation in a switching regulator.

The LM3411 circuitry includes an internally compensated operational amplifier, a bandgap reference, NPN output transistor, and voltage setting resistors.

A trimmed precision bandgap reference with temperature drift curvature correction provides a ensured 1% precision over the operating temperature range (A grade version). The inverting input of the amplifier is externally accessible for loop frequency compensation when used as part of a larger servo system. The output is an open-emitter NPN transistor capable of driving up to 15 mA of load current.

Because of its small die size, the LM3411 has been made available in the subminiature 5-pin SOT-23 surface-mount package. This package is ideal for use in space-critical applications.

Although its main application is to provide a precision output voltage (no trimming required) and maintain very good regulation in isolated DC-DC converters, it can also be used with other types of voltage regulators or power semiconductors to provide a precision output voltage without precision resistors or trimming.

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