UC3842AL-D08-T datasheet(4/9 Pages) UTC

No. de pieza	UC3842AL-D08-T

Descripción Electrónicos	CURRENT MODE PWM CONTROL CIRCUITS

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Fabricante Electrónico	UTC [Unisonic Technologies]

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4 / 9 page

UC3842A/3843A

LINEAR INTEGRATED CIRCUIT

UNISONICTECHNOLOGIESCO.,LTD

4 of 9

www.unisonic.com.tw

QW-R103-002.H



ELECTRICAL CHARACTERISTICS(Cont.)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CURRENT SENSE SECTION

Gain

GV

(Note 2, 3)

2.85

3

3.15

V/V

Maximum Input signal

VI(MAX)

VPIN1=5V( Note 2)

0.9

1

1.1

V

PSRR

12V≦VCC≦25V

70

dB

Input Bias Current

IBIAS

-2

-10

A

Delay to Output

VPIN3=0 to 2V

150

300

ns

OUTPUT SECTION

IO(SINK)=20mA

0.1

0.4

V

Low

VOL

IO(SINK)=200mA

1.5

2.2

V

IO(SOURCE)=20mA

13

13.5

V

Output Level

High

VOH

IO(SOURCE)=200mA

12

13.5

V

Rise Time

tR

TJ=25°C, CL=1nF (Note 1)

50

150

ns

Fall Time

tF

TJ=25°C, CL=1nF (Note 1)

50

150

ns

UNDER-VOLTAGE LOCKOUT OUTPUT SECTION

3842A

14.5

16

17.5

V

Start Threshold

3843A

VTH(ST)

7.8

8.4

9

V

3842A

8.5

10

11.5

V

Min. Operating Voltage

3843A

VOPR(MIN) After Turn On

7

7.6

8.2

V

PWM SECTION

MAX

D(MAX)

95

97

100

%

Duty Cycle

MIN

D(MIN)

0

%

TOTAL STANDBY CURRENT

Start-up Current

IST

0.12

0.3

mA

Operating Supply Current

ICC(OPR) VPIN2=VPIN3=0V

11

17

mA

VCC Zener Voltage

Vz

ICC=25mA

34

V

Notes: 1. These parameters, although guaranteed, are not 100% tested in production.

2. Parameters measured at trip point of latch with VPIN 2=0.

3. Gain defined as:

4. Adjust VCC above the start threshold before setting at 15V.

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UC3842AL-D08-T Datasheet(PDF) 4 Page - Unisonic Technologies

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