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LM340AT-5.0

THREE–TERMINAL POSITIVE FIXED VOLTAGE REGULATORS

Motorola => Freescale 

LM340, A Series

LM340–18

ELECTRICAL CHARACTERISTICS (Vin = 27 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)

Characteristics

Symbol Min

Typ

Max

Output Voltage (TJ = +25°C)

IO = 5.0 mA to 1.0 A

VO

17.3

18

18.7

Line Regulation

21.5 Vdc to 33 Vdc

21 Vdc to 33 Vdc (TJ = +25°C)

24 Vdc to 30 Vdc, IO = 1.0 A

21 Vdc to 33 Vdc, IO = 1.0 A (TJ = +25°C)

Load Regulation

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

21 ≤ Vin ≤ 33 Vdc, 5.0 mA ≤ IO ≤ 1.0 A, PD ≤ 15 W

Regline

–

–

–

–

–

180

–

180

–

90

–

180

Regload

–

–

–

–

180

–

180

–

90

VO

17.1

–

18.9

Quiescent Current

IO = 1.0 A

TJ = +25°C

Quiescent Current Change

21 ≤ Vin ≤ 33 Vdc, IO = 500 mA

5.0 mA ≤ IO ≤ 1.0 A, Vin = 27 V

21 ≤ Vin ≤ 33 Vdc, IO = 1.0 A

Ripple Rejection

IO = 1.0 mA (TJ = +25°C)

IB

–

–

8.5

–

4.0

8.0

∆IB

–

–

1.0

–

–

0.5

–

–

1.0

RR

53

69

–

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

–

rO

–

2.0

–

ISC

–

500

–

Vn

–

110

–

Average Temperature Coefficient of Output Voltage

IO = 5.0 mA

TCVO

–

±2.3

–

Peak Output Current (TJ = +25°C)

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

IO = 1.0 A

IO

–

2.4

–

21

–

–

NOTE: 1. Tlow to Thigh = 0° to +125°C

Unit

Vdc

mV

mV

Vdc

mA

mA

dB

Vdc

mΩ

A

µV

mV/°C

A

Vdc

MOTOROLA ANALOG IC DEVICE DATA

11

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