MCT7818CT Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

MCT7818CT

THREE-TERMINAL POSITIVE FIXED VOLTAGE REGULATORS

Motorola => Freescale 

MCT7800

ELECTRICAL CHARACTERISTICS (Vin = 15 V, IO = 500 mA, TJ = Tlow to Thigh [Note 1], unless otherwise noted.)

MCT7809B

MCT7809C

Characteristics

Symbol Min

Typ

Max

Min

Typ

Max

Output Voltage (TJ = +25°C)

Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PO ≤15 W)

11.5 Vdc ≤ Vin ≤ 24 Vdc

12.5 Vdc ≤ Vin ≤ 24 Vdc

Line Regulation, TJ = +25°C (Note 2)

11.5 Vdc ≤ Vin ≤ 26 Vdc

11.5 Vdc ≤ Vin ≤ 17 Vdc

Load Regulation, TJ = +25°C (Note 2)

5.0 mA ≤ IO ≤ 1.5 A

250 mA ≤ IO ≤ 750 mA

Quiescent Current (TJ = +25°C)

Quiescent Current Change

11.5 Vdc ≤ Vin ≤ 26 Vdc

12.5 Vdc ≤ Vin ≤ 26 Vdc

5.0 mA ≤ IO ≤ 1.0 A

Ripple Rejection

11.5 Vdc ≤ Vin ≤ 21.5 Vdc, f = 120 Hz

Dropout Voltage (IO = 1.0 A, TJ = +25°C)

Output Noise Voltage (TA = +25°C)

10 Hz ≤ f ≤ 100 kHz

VO

8.65

9.0

9.35 8.65

9.0

9.35

VO

—

—

—

8.55

9.0

9.45

8.55

9.0

9.45

—

—

—

Regline

—

8.0

50

—

8.0

50

—

4.0

25

—

4.0

25

Regload

—

3.0

50

—

3.0

50

—

2.0

25

—

2.0

25

IB

—

5.5

8.0

—

5.5

8.0

∆IB

—

—

—

—

—

1.0

—

—

1.0

—

—

—

—

—

0.5

—

—

0.5

RR

—

62

—

—

62

—

VI – VO

—

2.0

—

—

2.0

—

Vn

—

10

—

—

10

—

Output Resistance f = 1.0 kHz

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

Vin = 35 Vdc

Peak Output Current (TJ = +25°C)

Average Temperature Coefficient of Output Voltage

rO

—

18

—

ISC

—

0.2

—

Imax

—

2.2

—

TCVO

—

–1.0

—

—

18

—

—

0.2

—

—

2.2

—

—

–1.0

—

Unit

Vdc

Vdc

mV

mV

mA

mA

dB

Vdc

µV/VO

mΩ

A

A

mV/°C

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

MCT7812B

MCT7812C

Characteristics

Symbol Min

Typ

Max

Min

Typ

Max Unit

Output Voltage (TJ = +25°C)

VO

11.5

12

12.5

11.5

12

12.5

Vdc

Output Voltage (5.0 mA ≤ IO ≤ 1.0 A, PO ≤15 W)

14.5 Vdc ≤ Vin ≤ 27 Vdc

15.5 Vdc ≤ Vin ≤ 27 Vdc

VO

Vdc

—

—

—

11.4

12

12.6

11.4

12

12.6

—

—

—

Line Regulation, TJ = +25°C (Note 2)

14.5 Vdc ≤ Vin ≤ 30 Vdc

16 Vdc ≤ Vin ≤ 22 Vdc

Regline

—

10

240

—

mV

10

240

—

5.0

120

—

5.0

120

Load Regulation, TJ = +25°C (Note 2)

5.0 mA ≤ IO ≤ 1.5 A

250 mA ≤ IO ≤ 750 mA

Regload

mV

—

3.0

240

—

3.0

240

—

2.0

120

—

2.0

120

Quiescent Current (TJ = +25°C)

IB

—

5.5

8.0

—

5.5

8.0

mA

Quiescent Current Change

14.5 Vdc ≤ Vin ≤ 30 Vdc

15 Vdc ≤ Vin ≤ 30 Vdc

5.0 mA ≤ IO ≤ 1.0 A

∆IB

mA

—

—

—

—

—

1.0

—

—

1.0

—

—

—

—

—

0.5

—

—

0.5

NOTES: 1. Tlow = 0°C for MCT78XXC

= – 40°C for MCT78XXB

Thigh = +125°C for MCT78XXB, C. When the junction temperature exceeds +125°C, internal current limiting

will reduce the output current to less than 1.0 A at a VI–VO of 15 V or

greater. The MC7800 die will supply more current under the same conditions.

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

MCT7800

5

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