SG1845Y Microsemi Analog Mixed Signal Group, SG1845Y Datasheet - Page 9

• Manufacturer Part Number: SG1845Y
• Description: IC PWM CURRENT MODE 8-DIP
• Manufacturer: Microsemi Analog Mixed Signal Group

Specifications of SG1845Y

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 50%
• Voltage - Supply: 8.3 V ~ 30 V
• Buck: Yes
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -55°C ~ 125°C
• Package / Case: 8-DIP
• Frequency-max: 500kHz
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS compliant by exemption

Copyright © 2000
Rev. 1.6c
FIGURE 9. — OUTPUT SATURATION VOLTAGE vs.
FIGURE 11. — OUTPUT SATURATION VOLTAGE vs.
2.5
2.0
1.5
1.0
0.5
4.0
3.0
2.0
1.0
0
0
OUTPUT CURRENT & TEMPERATURE
100
OUTPUT CURRENT & TEMPERATURE
100
Duty Cycle < 5%
Output Current - (mA)
Output Current - (mA)
V
IN
200
200
= 15V
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Duty Cycle < 5%
V
C
IN
300
= 15V
300
U R R E N T
P
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
400
400
- M
O D E
500
500
P W M C
D
A T A
FIGURE 10. — CURRENT SENSE THRESHOLD vs.
O N T R O L L E R
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
S
0
H E E T
SG1844/SG1845 Series
Error Amp Output Voltage - (V)
ERROR AMPLIFIER OUTPUT
1.0
2.0
3.0
4.0
5.0
9