LM2941CSSLASHNOPB datasheet(6/30 Pages) TI1

6 / 30 page

LM2941, LM2941C

SNVS770I – JUNE 1999 – REVISED JANUARY 2015

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Electrical Characteristics: LM2941T, LM2941S, LM2941LD (continued)

5 V

≤ VOUT ≤ 20 V, VIN = VOUT + 5 V, COUT = 22 μF, unless otherwise specified. MIN (minimum) and MAX (maximum)

specifications in apply over the full Operating Temperature Range (unless otherwise specified) and typical values apply at TJ

= 25°C.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ON/OFF threshold

IOUT ≤ 1 A

1.30

0.80

voltage ON

ON/OFF threshold

IOUT ≤ 1 A

1.3

voltage OFF

VON/OFF = 2 V, IOUT ≤ 1 A

300

ON/OFF threshold

μA

current

VON/OFF = 2 V, IOUT ≤ 1 A, TJ = 25°C

100

6.6 Electrical Characteristics: LM2941CT, LM2941CS

5 V

≤ VOUT ≤ 20 V, VIN = VOUT + 5 V, COUT = 22 μF, unless otherwise specified. MIN (minimum) and MAX (maximum)

specifications in apply over the full Operating Temperature Range (unless otherwise specified) and typical values apply at TJ

= 25°C.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

5 mA

≤ IOUT ≤ 1 A

(1)

1.211

1.275

1.339

Reference voltage

5 mA

≤ IOUT ≤ 1 A

(1), T

J = 25°C

1.237

1.275

1.313

VOUT + 2 V ≤ VIN ≤ 26 V, IOUT = 5 mA, TJ =

Line regulation

mV/V

25°C

Load regulation

50 mA

≤ IOUT ≤ 1 A, TJ = 25°C

mV/V

Output impedance

100 mADC and 20 mArms, ƒOUT = 120 Hz

Ω/V

VOUT + 2 V ≤ VIN < 26 V, IOUT = 5 mA, TJ =

25°C

Quiescent current

VIN = VOUT + 5 V, IOUT = 1 A

VIN = VOUT + 5 V, IOUT = 1 A, TJ = 25°C

10 Hz to 100 kHz

0.003%

RMS output noise, % of VOUT

IOUT = 5 mA

Ripple rejection

ƒOUT = 120Hz, 1 Vrms, IL = 100 mA, TJ = 25°C

0.005

0.02

%/V

Long-term stability

0.4

%/1000 Hr

IOUT = 1A

0.5

Dropout voltage

IOUT = 1A, TJ = 25°C

0.5

0.8

IOUT = 100 mA

110

200

Short-circuit current

VIN max = 26 V

(2), T

J = 25°C

1.6

1.9

VOUT max 1 V above nominal VOUT, ROUT = 100

Maximum line transient

Ω, t ≤ 100 ms, , TJ = 25°C

Maximum operational input

TJ = 25°C

VDC

voltage

Reverse polarity

ROUT = 100 Ω, VOUT ≥ −0.6 V, TJ = 25°C

−15

−30

DC input voltage

Reverse polarity

≤ 100 ms, ROUT = 100 Ω, TJ = 25°C

−45

−55

transient input voltage

ON/OFF threshold

IOUT ≤ 1 A, TJ = 25°C

1.3

0.8

voltage ON

ON/OFF threshold

IOUT ≤ 1 A, TJ = 25°C

1.3

voltage OFF

ON/OFF threshold

VON/OFF = 2 V, IOUT ≤ 1 A, TJ = 25°C

100

μA

current

(1)

The output voltage range is 5 V to 20 V and is determined by the two external resistors, R1 and R2. See Typical Application.

(2)

Output current capability will decrease with increasing temperature, but will not go below 1 A at the maximum specified temperatures.

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