SG3843DM Microsemi Analog Mixed Signal Group, SG3843DM Datasheet - Page 9

• Manufacturer Part Number: SG3843DM
• Description: IC PWM CURRENT MODE 8SOIC
• Manufacturer: Microsemi Analog Mixed Signal Group

Specifications of SG3843DM

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 100%
• Voltage - Supply: 8.2 V ~ 30 V
• Buck: No
• Boost: No
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 8-SOIC
• Frequency-max: 500kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Copyright © 2000
Rev. 1.6a 10/04
FIGURE 9. — OSCILLATOR DISCHARGE CURRENT vs.
FIGURE 11. — CURRENT SENSE THRESHOLD vs.
8.2
8.0
7.8
7.6
7.4
7.2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
-75
-50
TEMPERATURE
Error Amp Output Voltage - (V)
ERROR AMPLIFIER OUTPUT
1.0
Junction Temperature - (°C)
-25
0
2.0
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
25
C
U R R E N T
3.0
P
50
R O D U C T I O N
C H A R A C T E R I S T I C C U R V E S
75
4.0
- M
100
O D E
125
5.0
P W M C
D
A T A
FIGURE 10. — OUTPUT SATURATION VOLTAGE vs.
FIGURE 12. — OUTPUT SATURATION VOLTAGE vs.
O N T R O L L E R
2.5
2.0
1.5
1.0
0.5
4.0
3.0
2.0
1.0
S
0
0
H E E T
SG1842/SG1843 Series
OUTPUT CURRENT & TEMPERATURE
100
OUTPUT CURRENT & TEMPERATURE
100
Duty Cycle < 5%
Output Current - (mA)
Output Current - (mA)
V
IN
200
200
= 15V
V
Duty Cycle < 5%
IN
= 15V
300
300
400
400
500
500
9