LM2990

AKTIV

Negativer LDO-Spannungsregler, 1 A

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Datenblatt

document-pdfAcrobat LM2990 Negative Low-Dropout Regulator datasheet (Rev. G) (Englisch) PDF | HTML

LM2990

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Output options

Fixed Output

Iout (max) (A)

1

Vin (max) (V)

-6

Vin (min) (V)

-26

Vout (max) (V)

-5

Vout (min) (V)

-15

Fixed output options (V)

-15, -12, -5.2, -5

Rating

Catalog

Noise (µVrms)

250

PSRR at 100 KHz (dB)

23

Iq (typ) (mA)

1

Thermal resistance θJA (°C/W)

23, 41.2

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Accuracy (%)

4.9

Dropout voltage (Vdo) (typ) (mV)

600

Operating temperature range (°C)

-40 to 125

Output options

Fixed Output

Iout (max) (A)

1

Vin (max) (V)

-6

Vin (min) (V)

-26

Vout (max) (V)

-5

Vout (min) (V)

-15

Fixed output options (V)

-15, -12, -5.2, -5

Rating

Catalog

Noise (µVrms)

250

PSRR at 100 KHz (dB)

23

Iq (typ) (mA)

1

Thermal resistance θJA (°C/W)

23, 41.2

Load capacitance (min) (µF)

10

Regulated outputs (#)

1

Accuracy (%)

4.9

Dropout voltage (Vdo) (typ) (mV)

600

Operating temperature range (°C)

-40 to 125

TO-220 (NDE)

3

46.5328 mm² 10.16 x 4.58

TO-263 (KTT)

3

154.8384 mm² 10.16 x 15.24

Input Voltage: –26 V to –6 V
Fixed Output Voltages: −5 V, −5.2 V, −12 V, and
−15 V
5% Output Accuracy over Entire Operating Range
Output Current in Excess of 1 A
Dropout Voltage Typically 0.6 V at 1-A Load
Low Quiescent Current
Internal Short-Circuit Current Limit
Internal Thermal Shutdown with Hysteresis
Functional Complement to the LM2940 Series

Input Voltage: –26 V to –6 V
Fixed Output Voltages: −5 V, −5.2 V, −12 V, and
−15 V
5% Output Accuracy over Entire Operating Range
Output Current in Excess of 1 A
Dropout Voltage Typically 0.6 V at 1-A Load
Low Quiescent Current
Internal Short-Circuit Current Limit
Internal Thermal Shutdown with Hysteresis
Functional Complement to the LM2940 Series

The LM2990 is a three-terminal, low-dropout, 1-A negative voltage regulator available with fixed output voltages of −5 V, −5.2 V, −12 V, and −15 V.

The LM2990 uses circuit design techniques to provide low-dropout and low-quiescent current. The dropout voltage at 1-A load current is typically 0.6 V and an ensured worst-case maximum of 1 V over the entire operating temperature range. The quiescent current is typically 1 mA with 1-A load current and an input-output voltage differential greater than 3 V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (V_OUT − V_IN ≤ 3 V). Output voltage accuracy is ensured to ±5% over load and temperature extremes.

The LM2990 also implements short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when overloaded for an extended period of time.

All these features make the LM2990 an ideal negative power supply suited for dual supply systems. The device may also be used as fixed or adjustable current sink load.

The LM2990 is available in two 3-pin packages and is rated for operation over the junction temperature range of −40°C to 125°C.

The LM2990 is a three-terminal, low-dropout, 1-A negative voltage regulator available with fixed output voltages of −5 V, −5.2 V, −12 V, and −15 V.

The LM2990 uses circuit design techniques to provide low-dropout and low-quiescent current. The dropout voltage at 1-A load current is typically 0.6 V and an ensured worst-case maximum of 1 V over the entire operating temperature range. The quiescent current is typically 1 mA with 1-A load current and an input-output voltage differential greater than 3 V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (V_OUT − V_IN ≤ 3 V). Output voltage accuracy is ensured to ±5% over load and temperature extremes.

The LM2990 also implements short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when overloaded for an extended period of time.

All these features make the LM2990 an ideal negative power supply suited for dual supply systems. The device may also be used as fixed or adjustable current sink load.

The LM2990 is available in two 3-pin packages and is rated for operation over the junction temperature range of −40°C to 125°C.

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Alle anzeigen 3

	Typ	Titel		Datum
*	Data sheet	LM2990 Negative Low-Dropout Regulator datasheet (Rev. G)	PDF \| HTML	15 Mai 2015
	Application note	A Topical Index of TI LDO Application Notes (Rev. F)		27 Jun 2019
	Application note	Linear and Switching Voltage Regulator Fundamental Part 1		21 Mär 2007

Design und Entwicklung

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Gehäuse	Pins	CAD-Symbole, Footprints und 3D-Modelle
TO-220 (NDE)	3	Ultra Librarian
TO-263 (KTT)	3	Ultra Librarian

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LM2990

Negativer LDO-Spannungsregler, 1 A

LM2990

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