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LM2931

LOW DROPOUT VOLTAGE REGULATORS

Motorola => Freescale 

LM2931 Series

ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 10 mA, CO = 100 µF, CO(ESR) = 0.3 Ω, TJ = 25°C [Note 1].)

LM2931–5.0

LM2931A–5.0

Characteristic

Symbol Min Typ Max Min Typ Max

Unit

FIXED OUTPUT

Ripple Rejection (f = 120 Hz)

RR

60

90

–

60

90

–

dB

Dropout Voltage

IO = 10 mA

IO = 100 mA

Over–Voltage Shutdown Threshold

VI–VO

V

–

0.015 0.2

–

0.015 0.2

–

0.16

0.6

–

0.16 0.6

Vth(OV) 26

29.5

40

26

29.5

40

V

Output Voltage with Reverse Polarity Input (Vin = –15 V)

–VO

– 0.3

0

–

– 0.3

0

–

V

ELECTRICAL CHARACTERISTICS (Vin = 14 V, IO = 10 mA, CO = 100 µF, CO(ESR) = 0.3 Ω, TJ = 25°C [Note 1].)

LM2931C

LM2931AC

Characteristic

Symbol Min Typ Max Min Typ Typ

ADJUSTABLE OUTPUT

Reference Voltage (Note 2, Figure 18)

IO = 10 mA, TJ = 25°C

IO ≤ 100 mA, TJ = – 40 to +125°C

Output Voltage Range

Vref

1.14 1.20 1.26 1.17 1.20 1.23

1.08

–

1.32 1.15

–

1.25

VOrange 3.0 to 2.7 to

–

3.0 to 2.7 to

–

24

29.5

24

29.5

Line Regulation (Vin = VO + 0.6 V to 26 V)

Load Regulation (IO = 5.0 mA to 100 mA)

Output Impedance

IO = 10 mA, ∆IO = 1.0 mA, f = 10 Hz to 10 kHz

Bias Current

IO = 100 mA

IO = 10 mA

Output Inhibited (Vth(OI) = 2.5 V)

Adjustment Pin Current

Output Noise Voltage (f = 10 Hz to 100 kHz)

Long–Term Stability

Regline

–

0.2

1.5

–

0.2

1.5

Regload

–

0.3

1.0

–

0.3

1.0

ZO

–

40

–

–

40

–

IB

–

6.0

–

–

6.0

–

–

0.4

1.0

–

0.4

1.0

–

0.2

1.0

–

0.2

1.0

IAdj

–

0.2

–

–

0.2

–

Vn

–

140

–

–

140

–

S

–

0.4

–

–

0.4

–

Ripple Rejection (f = 120 Hz)

RR

0.10 0.003

–

0.10 0.003

–

Dropout Voltage

IO = 10 mA

IO = 100 mA

Over–Voltage Shutdown Threshold

VI–VO

–

0.015 0.2

–

0.16

0.6

Vth(OV) 26

29.5

40

–

0.015

–

0.16

26

29.5

Output Voltage with Reverse Polarity Input (Vin = –15 V)

–VO

– 0.3

0

–

–0.3

0

Output Inhibit Threshold Voltages

Output “On”:

Output “Off”:

TJ = 25°C

TJ = – 40° to +125°C

TJ = 25°C

TJ = – 40° to +125°C

Output Inhibit Threshold Current (Vth(OI) = 2.5 V)

Vth(OI)

–

2.15 1.90

–

2.15

–

–

1.20

–

–

2.50 2.26

–

2.50 2.26

3.25

–

–

3.25

–

Ith(OI)

–

30

50

–

30

NOTES: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

2. The reference voltage on the adjustable device is measured from the output to the adjust pin across R1.

0.2

0.6

40

–

1.90

1.20

–

–

50

Unit

V

V

mV/V

%/V

mΩ/V

mA

µA

µVrms/V

%/kHR

%/V

V

V

V

V

µA

4

MOTOROLA ANALOG IC DEVICE DATA

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