UC3842 Просмотр технического описания (PDF) - Fairchild Semiconductor

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UC3842

SMPS Controller

Fairchild Semiconductor 

UC3842/UC3843/UC3844/UC3845

Absolute Maximum Ratings

Parameter

Symbol

Value

Supply Voltage

Output Current

Analog Inputs (Pin 2.3)

Error Amp Output Sink Current

Power Dissipation at TA≤25°C (8DIP)

Power Dissipation at TA≤25°C (8SOP)

Power Dissipation at TA≤25°C (14SOP)

Storage Temperature Range

Lead Temperature (Soldering, 10sec)

VCC

IO

V(ANA)

ISINK (E.A)

PD(Note1,2)

PD(Note1,2)

PD(Note1,2)

TSTG

TLEAD

30

±1

-0.3 to 6.3

10

1200

460

680

-65 ~ +150

+300

Note:

1. Board Thickness 1.6mm, Board Dimension 76.2mm ×114.3mm, (Reference EIA / JSED51-3, 51-7)

2. Do not exceeed PD and SOA (Safe Operation Area)

Unit

V

A

V

mA

mW

mW

mW

°C

°C

Power Dissipation Curve

1200

1100

8DIP

1000

900

800

14SOP

700

600 8SOP

500

400

300

0

10 20 30 40 50 60 70 80 90 100 110 120 130 140 150

AMBIENT TEMPERATURE (℃)

Thermal Data

Characteristic

Thermal Resistance Junction-ambient

Symbol

Rthj-amb(MAX)

8-DIP

100

8-SOP

265

Pin Array

8DIP,8SOP

14SOP

14-SOP

180

Unit

°C/W

COMP 1

VFB 2

CURRENT SENSE 3

RT/CT 4

8 VREF

COMP 1

7 VCC

N/C 2

6 OUTPUT

VFB 3

5 GND

N/C 4

CURRENT SENSE 5

14 VREF

13 N/C

12 VCC

11 PWR VC

10 OUTPUT

N/C 6

RT/CT 7

9 GND

8 PWR GND

2

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