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LM340AT

THREE–TERMINAL POSITIVE FIXED VOLTAGE REGULATORS

Motorola => Freescale 

LM340, A Series

LM340–12

ELECTRICAL CHARACTERISTICS (Vin = 19 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)

Characteristics

Symbol Min

Typ

Max Unit

Output Voltage (TJ = +25°C)

IO = 5.0 mA to 1.0 A

VO

11.5

12

12.5

Vdc

Line Regulation (Note 2)

15 Vdc to 27 Vdc

14.6 Vdc to 30 Vdc (TJ = +25°C)

16 Vdc to 22 Vdc, IO = 1.0 A

14.6 Vdc to 27 Vdc, IO = 1.0 A (TJ = +25°C)

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)

Output Voltage

14.5 ≤ Vin ≤ 27 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W

Regline

–

–

–

–

mV

–

120

–

120

–

60

–

120

Regload

–

–

–

mV

–

120

–

120

–

60

VO

11.4

–

12.6

Vdc

Quiescent Current

IO = 1.0 A

TJ = +25°C

Quiescent Current Change

14.5 ≤ Vin ≤ 30 Vdc, IO = 500 mA

5.0 mA ≤ IO ≤ 1.0 A, Vin = 19 V

14.8 ≤ Vin ≤ 27 Vdc, IO = 1.0 A

Ripple Rejection

IO = 1.0 A (TJ = +25°C)

IB

mA

–

–

8.5

–

4.0

8.0

∆IB

mA

–

–

1.0

–

–

0.5

–

–

1.0

RR

55

72

–

dB

Dropout Voltage

Output Resistance (f = 1.0 kHz)

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

Output Noise Voltage (TA = +25°C)

10 Hz ≤ f ≤ 100 kHz

VI – VO

–

1.7

–

Vdc

rO

–

2.0

–

mΩ

ISC

–

1.1

–

A

Vn

–

75

–

µV

Average Temperature Coefficient of Output Voltage

IO = 5.0 mA

TCVO

–

±1.5

–

mV/°C

Peak Output Current (TJ = +25°C)

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

IO = 1.0 A

IO

–

2.4

–

A

14.6

–

–

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.

MOTOROLA ANALOG IC DEVICE DATA

7

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