LM340, A Series

3

MOTOROLA ANALOG IC DEVICE DATA

LM340–5.0

Characteristics

Symbol

Min

Typ

Max

Unit

Output Voltage (TJ = +25°C)

IO = 5.0 mA to 1.0 A

VO

4.8

5.0

5.2

Vdc

Line Regulation (Note 2)

8.0 Vdc to 20 Vdc

7.0 Vdc to 25 Vdc (TJ = +25°C)

8.0 Vdc to 12 Vdc, IO = 1.0 A

7.3 Vdc to 20 Vdc, IO = 1.0 A (TJ = +25°C)

Regline

–

–

–

–

–

–

–

–

50

50

25

50

mV

Load Regulation (Note 2)

5.0 mA

≤ IO ≤ 1.0 A

5.0 mA

≤ IO ≤ 1.5 A (TJ = +25°C)

250 mA

≤ IO ≤ 750 mA (TJ = +25°C)

Regload

–

–

–

–

–

–

50

50

25

mV

Output Voltage

7.0

≤ Vin ≤ 20 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W

VO

4.75

–

5.25

Vdc

Quiescent Current

IO = 1.0 A

TJ = +25°C

IB

–

–

–

4.0

8.5

8.0

mA

Quiescent Current Change

7.0

≤ Vin ≤ 25 Vdc, IO = 500 mA

5.0 mA

≤ IO ≤ 1.0 A, Vin = 10 V

7.5

≤ Vin ≤ 20 Vdc, IO = 1.0 A

∆IB

–

–

–

–

–

–

1.0

0.5

1.0

mA

Ripple Rejection

IO = 1.0 A (TJ = +25°C)

RR

62

80

–

dB

Dropout Voltage

VI – VO

–

1.7

–

Vdc

Output Resistance (f = 1.0 kHz)

rO

–

2.0

–

m

Ω

Short Circuit Current Limit (TJ = +25°C)

ISC

–

2.0

–

A

Output Noise Voltage (TA = +25°C)

10 Hz

≤ f ≤ 100 kHz

Vn

–

40

–

µV

Average Temperature Coefficient of Output Voltage

IO = 5.0 mA

TCVO

–

±0.6

–

mV/

°C

Peak Output Current (TJ = +25°C)

IO

–

2.4

–

A

Input Voltage to Maintain Line Regulation (TJ = +25°C)

IO = 1.0 A

7.3

–

–

Vdc

NOTES: 1. Tlow to Thigh = 0° to +125°C

2. Load and line regulation are specified at constant junction temperature. Changes in VO due to heating effects must be taken into account separately.

Pulse testing with low duty cycle is used.

DEFINITIONS

Line Regulation – The change in output voltage for a

change in the input voltage. The measurement is made

under conditions of low dissipation or by using pulse

techniques such that the average chip temperature is not

significantly affected.

Load Regulation – The change in output voltage for a

change in load current at constant chip temperature.

Maximum Power Dissipation – The maximum total device

dissipation for which the regulator will operate within

specifications.

Quiescent Current – That part of the input current that is not

delivered to the load.

Output Noise Voltage – The rms AC voltage at the output,

with constant load and no input ripple, measured over a

specified frequency range.