SG1844 查看數據表（PDF） - Microsemi Corporation
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SG1844 Datasheet PDF : 12 Pages
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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. 1.4 4/00
7
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