LM2935D2T 데이터 시트보기 (PDF) - Motorola => Freescale

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LM2935D2T

LOW DROPOUT DUAL VOLTAGE REGULATOR

Motorola => Freescale 

LM2935

TYPICAL CIRCUIT WAVEFORMS

Vin, Input Voltage

(Pin 1)

Open

S1, “On”/“Off” Switch

VO, Main Output Voltage

(Pin 2)

60 V

14 V

5.0 V

Reset (Pin 4)

Vstby, Standby Voltage

(Pin 5)

Main

Output

Turn “On”

14 V

5.0 V

5.0 V

5.0 V

Load

Dump

26 V

14 V

3.0 V

9.0 V

Closed

5.0 V

5.0 V

5.0 V

2.4 V

0V

Open

0V

2.4 V

Low Input

Voltage

Input

Voltage

Line Noise

5.0 V

Main

Output

Short

Circuit

Thermal

Shutdown

Main

Output

Turn “Off”

Figure 1. D2PAK Thermal Resistance and Maximum

Power Dissipation versus P.C.B. Copper Length

80

3.5

70

60

50

40

Free Air

Mounted

Vertically

PD(max) for TA = 50°C

3.0

ÎÎÎÎÎÎÎÎÎÎÎÎ Minimum

ÎÎÎÎÎÎÎÎÎÎÎÎ Size Pad

2.0 oz. Copper 2.5

L

2.0

L

1.5

RθJA

30

1.0

0

5.0

10

15

20

25

30

L, LENGTH OF COPPER (mm)

4

MOTOROLA ANALOG IC DEVICE DATA

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