MC78M24 datasheet(2/14 Pages) FAIRCHILD

部件名	MC78M24

功能描述	3-Terminal 0.5A Positive Voltage Regulator

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制造商	FAIRCHILD [Fairchild Semiconductor]

网页	http://www.fairchildsemi.com

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2 / 14 page

MC78MXX/LM78MXX

2

Absolute Maximum Ratings

Note:

1. Thermal resistance test board

Size: 76.2mm * 114.3mm * 1.6mm(1S0P)

JEDEC standard: JESD51-3, JESD51-7

2. Assume no ambient airflow

Electrical Characteristics (MC78M05/LM78M05)

(Refer to the test circuits, 0 < TJ < +125

°C, IO=350mA, VI=10V, unless otherwise specified, CI = 0.33µF, CO=0.1µF)

Note:

3. Load and line regulation are specified at constant junction temperature. Change in Vo due to heating effects must be taken

into account separately. Pulse testing with low duty is used.

Parameter

Symbol

Value

Unit

Input Voltage (for VO = 5V to 18V)

(for VO = 24V)

VI

35

40

V

Thermal Resistance Junction-Case (Note1)

TO-220 (Tc = +25

°C)

R

θJC

2.5

°C/W

Thermal Resistance Junction-Air (Note1, 2)

TO-220 (Ta = +25

°C)

D-PAK (Ta = +25

°C)

R

θJA

66

92

°C/W

Operating Junction Temperature Range

TOPR

0 ~ +150

°C

Storage Temperature Range

TSTG

-65 ~ +150

°C

Parameter

Symbol

Conditions

Min.

Typ.

Max.

Unit

Output Voltage

VO

TJ = +25

°C

4.855.2

V

IO = 5mA to 350mA

VI = 7V to 20V

4.75

5

5.25

Line Regulation (Note3)

∆VO

IO = 200mA

TJ =+25

°C

VI = 7V to 25V

-

100

mV

VI = 8V to 25V

-

50

Load Regulation (Note3)

∆VO

IO = 5mA to 0.5A, TJ =+25

°C

-

100

mV

IO = 5mA to 200mA, TJ =+25

°C-

-

50

Quiescent Current

IQ

TJ =+25

°C-

4.0

6.0

mA

Quiescent Current Change

∆IQ

IO = 5mA to 350mA

-

0.5

mA

IO = 200mA

VI = 8V to 25V

--

0.8

Output Voltage Drift

∆V/∆T

IO = 5mA

TJ = 0 to +125

°C

--0.5

-

mV/

°C

Output Noise Voltage

VN

f = 10Hz to 100kHz

-

40

-

µV/Vo

Ripple Rejection

RR

f = 120Hz, IO = 300mA

VI = 8V to 18V, TJ =+25

°C

-80

-

dB

Dropout Voltage

VD

TJ =+25

°C, IO = 500mA

-

2

-

V

Short Circuit Current

ISC

TJ =+25

°C, VI = 35V

-

300

-

mA

Peak Current

IPK

TJ =+25

°C

-

700

-

mA

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类似说明 - MC78M24

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