SG3844Y SEMICOA, SG3844Y Datasheet - Page 8

• Manufacturer Part Number: SG3844Y
• Manufacturer: SEMICOA

Specifications of SG3844Y

• Pwm Type: Current Mode PWM Controller
• Number Of Pwm Outputs: 1
• On/off Pin: No
• Adjustable Output: No
• Switching Freq: 500kHz
• Duty Cycle: 50%
• Output Current: 200mA
• Synchronous Pin: No
• Rise Time: 50ns
• Fall Time: 50ns
• Operating Temperature Classification: Commercial
• Mounting: Through Hole
• Pin Count: 8
• Package Type: CDIP
• Lead Free Status / Rohs Status: Not Compliant

8
SG1844/SG1845 Series
FIGURE 5. — REFERENCE VOLTAGE vs. TEMPERATURE
FIGURE 7. — START-UP VOLTAGE THRESHOLD vs.
16.08
16.06
16.04
16.02
16.00
15.98
5.02
5.01
5.00
4.99
4.98
-75
-75
-50
-50
TEMPERATURE
Junction Temperature - (°C)
Junction Temperature - (°C)
-25
-25
0
0
V
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
CC
= 15V
25
25
C
SG1844
U R R E N T
P
50
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
75
- M
100
100
O D E
125
125
P W M C
D
A T A
FIGURE 6. — START-UP VOLTAGE THRESHOLD vs.
FIGURE 8. — OSCILLATOR DISCHARGE CURRENT vs.
O N T R O L L E R
8.32
8.30
8.28
8.26
8.24
8.22
8.20
8.18
8.2
8.0
7.8
7.6
7.4
7.2
S
-75
-75
H E E T
-50
-50
TEMPERATURE
TEMPERATURE
Junction Temperature - (°C)
Junction Temperature - (°C)
-25
-25
0
0
25
25
SG1845
50
50
75
75
100
100
Copyright © 2000
Rev. 1.6c
125
125