LND3842A View Datasheet(PDF) - Linear Dimensions Semiconductor

Part Name

Description

MFG CO.

LND3842A

Current Mode PWM Controller

Linear Dimensions Semiconductor 

1 2 3 4 5 6 7 8 9 10

LND3842/43/44/45

ABSOLUTE MAXIMUM RATINGS

Characteristic

Supply voltage (low impedance source)

Output Current

Input Voltage (Analog Inputs pins 2,3)

Error Amp Output Sink Current

Power Dissipation (TA =25°C)

Storage Temperature Range

Lead Temperature ( soldering 5 sec.)

Symbol

Vcc

IO

VI

ISINK(E.A)

PO

Tstg

TL

Value

30

±1

-0.3 to 5.5

10

1

-65 to 150

260

Units

V

A

V

mA

W

°C

°C

BLOCK DIAGRAM

8 VREF

5V VREF

SET/

RESET

UVLO

2 VFB

INTERNAL

BIAS

1/2 VREF

+

ERR

- AMP

COMP

1

CURRENT

SENSE

3

4 RT / CT

VREF LOGIC

2R

R

1V

OSCILLATOR

C.S.

COMP

R

PWM

LATCH

S

T

36V

VCC 7

GND

5

POWER VREF

7

OUT

6

5

POWER GND

• Linear Dimensions, Inc. • 445 East Ohio Street, Chicago IL 60611 USA • tel 312.321.1810 • fax 312.321.1830 • www.lineardimensions.com •

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