LM2941

ACTIVE

1-A, 26-V, high-PSRR, adjustable low-dropout voltage regulator with enable from -40°C to +125°C

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Data sheet

document-pdfAcrobat LM2941x 1-A Low Dropout Adjustable Regulator datasheet (Rev. I) PDF | HTML

LM2941

ACTIVE

Data sheet

Order now

Product details

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

1

Vin (max) (V)

26

Vin (min) (V)

6

Vout (max) (V)

20

Vout (min) (V)

5

Fixed output options (V)

20

Rating

Catalog

Noise (µVrms)

600

PSRR at 100 KHz (dB)

67

Iq (typ) (mA)

10

Thermal resistance θJA (°C/W)

32, 40.6, 41

Load capacitance (min) (µF)

22

Regulated outputs (#)

1

Features

Enable

Accuracy (%)

5

Dropout voltage (Vdo) (typ) (mV)

500

Operating temperature range (°C)

-40 to 125

Output options

Adjustable Output, Fixed Output

Iout (max) (A)

1

Vin (max) (V)

26

Vin (min) (V)

6

Vout (max) (V)

20

Vout (min) (V)

5

Fixed output options (V)

20

Rating

Catalog

Noise (µVrms)

600

PSRR at 100 KHz (dB)

67

Iq (typ) (mA)

10

Thermal resistance θJA (°C/W)

32, 40.6, 41

Load capacitance (min) (µF)

22

Regulated outputs (#)

1

Features

Enable

Accuracy (%)

5

Dropout voltage (Vdo) (typ) (mV)

500

Operating temperature range (°C)

-40 to 125

TO-220 (KC)

5

45.212 mm² 10.16 x 4.45

TO-220 (NDH)

5

86.0552 mm² 10.16 x 8.47

TO-263 (KTT)

5

154.8384 mm² 10.16 x 15.24

WSON (NGN)

8

16 mm² 4 x 4

Operating V_IN Range: 6 V to 26 V
Output Voltage Adjustable From 5 V to 20 V
Dropout Voltage Typically 0.5 V at I_OUT = 1 A
Output Current in Excess of 1 A
Trimmed Reference Voltage
Reverse Battery Protection
Internal Short-Circuit Current Limit
Mirror Image Insertion Protection
P⁺ Product Enhancement Tested
TTL, CMOS Compatible ON/OFF Switch
WSON Space-Saving Package

Operating V_IN Range: 6 V to 26 V
Output Voltage Adjustable From 5 V to 20 V
Dropout Voltage Typically 0.5 V at I_OUT = 1 A
Output Current in Excess of 1 A
Trimmed Reference Voltage
Reverse Battery Protection
Internal Short-Circuit Current Limit
Mirror Image Insertion Protection
P⁺ Product Enhancement Tested
TTL, CMOS Compatible ON/OFF Switch
WSON Space-Saving Package

The LM2941 positive voltage regulator features the ability to source 1 A of output current with a typical dropout voltage of 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (V_IN − V_OUT ≤ 3 V).

Designed also for vehicular applications, the LM2941 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. Familiar regulator features such as short circuit and thermal overload protection are also provided.

The LM2941 positive voltage regulator features the ability to source 1 A of output current with a typical dropout voltage of 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (V_IN − V_OUT ≤ 3 V).

Designed also for vehicular applications, the LM2941 and all regulated circuitry are protected from reverse battery installations or two-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. Familiar regulator features such as short circuit and thermal overload protection are also provided.

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	Type	Title		Date
*	Data sheet	LM2941x 1-A Low Dropout Adjustable Regulator datasheet (Rev. I)	PDF \| HTML	12 Jan 2015
	More literature	Die D/S LM2941 MDE 1A Low Dropout Adjustable Regulator		20 Dec 2012

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