MC78T15ACT 查看數據表（PDF） - Motorola => Freescale

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MC78T15ACT

THREE-AMPERE POSITIVE FIXED VOLTAGE REGULATORS

Motorola => Freescale 

MC78T00 Series

ELECTRICAL CHARACTERISTICS (Vin = 17 V, IO = 3.0 A, 0°C ≤ TJ ≤ 125°C, PO ≤ Pmax [Note 1], unless otherwise noted.)

MC78T12AC

MC78T12C

Characteristics

Symbol

Min

Typ

Max

Min

Typ

Max Unit

Output Voltage

(5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C)

(5.0 mA ≤ IO ≤ 3.0 A,

5.0 mA ≤ IO ≤ 2.0 A, 14.5 Vdc ≤ Vin ≤ 27 Vdc)

VO

Vdc

11.75

12

12.25 11.5

12

12.5

11.5

12

12.5

11.4

12

12.6

Line Regulation (Note 2)

Regline

–

6.0

45

–

6.0

45

mV

(14.5 Vdc ≤ Vin ≤ 35 Vdc, IO = 5.0 mA, TJ = +25°C;

14.5 Vdc ≤ Vin ≤ 35 Vdc, IO = 1.0 A, TJ = +25°C;

16 Vdc ≤ Vin ≤ 22 Vdc, IO = 3.0 A, TJ = +25°C;

14.9 Vdc ≤ Vin ≤ 27 Vdc, IO = 1.0 A)

Load Regulation (Note 2)

(5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C)

(5.0 mA ≤ IO ≤ 3.0 A)

Regload

mV

–

10

30

–

10

30

–

15

80

–

15

80

Thermal Regulation

(Pulse = 10 ms, P = 20 W, TA = +25°C)

Regtherm

–

0.001 0.01

–

0.002 0.03 %VO/W

Quiescent Current

(5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C)

(5.0 mA ≤ IO ≤ 3.0 A)

IB

mA

–

3.5

5.0

–

3.5

5.0

–

4.0

6.0

–

4.0

6.0

Quiescent Current Change

∆IB

(14.5 Vdc ≤ Vin ≤ 35 Vdc, IO = 5.0 mA, TJ = +25°C;

5.0 mA ≤ IO ≤ 3.0 A, TJ = +25°C;

14.9 Vdc ≤ Vin ≤ 27 Vdc, IO = 1.0 A)

–

0.3

1.0

–

0.3

1.0

mA

Ripple Rejection

(15 Vdc ≤ Vin ≤ 25 Vdc, f = 120 Hz,

IO = 2.0 A, TJ = 25°C)

RR

57

67

–

57

67

–

dB

Dropout Voltage (IO = 3.0 A, TJ = +25°C)

Vin – VO

–

2.2

2.5

–

2.2

2.5

Vdc

Output Noise Voltage

(10 Hz ≤ f ≤ 100 kHz, TJ = +25°C)

Vn

–

10

–

–

10

–

µV/VO

Output Resistance (f = 1.0 kHz)

Short Circuit Current Limit

(Vin = 35 Vdc, TJ = +25°C)

RO

–

2.0

–

–

20

–

mΩ

ISC

–

1.5

–

–

1.5

–

A

Peak Output Current (TJ = +25°C)

Average Temperature Coefficient

of Output Voltage (IO = 5.0 mA)

Imax

–

5.0

–

TCVO

–

0.5

–

–

5.0

–

A

–

0.5

–

mV/°C

NOTES: 1. Although power dissipation is internally limited, specifications apply only for PO ≤ Pmax, Pmax = 25 W.

2. Line and load 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.

4

MOTOROLA ANALOG IC DEVICE DATA

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