SG1845J/883(2006) View Datasheet(PDF) - Microsemi Corporation

Part Name

Description

Manufacturer

SG1845J/883
(Rev.:2006)

CURRENT MODE PWM CONTROLLER

Microsemi Corporation 

PRODUCT DATABOOK 1996/1997

SG1844/SG1845 Series

CURRENT-MODE PWM CONTROLLER

PRODUCTION DATA SHEET

CHARACTERISTIC CURVES

FIGURE 1. — DROPOUT VOLTAGE vs. TEMPERATURE

10.0

SG1844

9.6

9.2

8.8

8.4

8.0

SG1845

FIGURE 2. — OSCILLATOR TEMPERATURE STABILITY

2

0

VIN = 15V

Duty Cycle = 50%

-2

-4

-6

-8

-10

-75 -50 -25 0 25 50 75 100 125

Junction Temperature - (°C)

-75 -50 -25 0 25 50 75 100 125

Junction Temperature - (°C)

FIGURE 3. — CURRENT SENSE TO OUTPUT DELAY vs.

TEMPERATURE

220

200

180

VPIN3 = 1.1V

160

140

120

-75 -50 -25 0 25 50 75 100 125

Junction Temperature - (°C)

FIGURE 4. — START-UP CURRENT vs. TEMPERATURE

0.7

SG1844

0.6

0.5

0.4

0.3

SG1845

0.2

-75 -50 -25 0 25 50 75 100 125

Junction Temperature - (°C)

Copyright © 2000

Rev. 1.6c

7

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