PRODUCT DATABOOK 1996/1997
SG1844/SG1845 Series
C
URRENT
-M
ODE
PWM C
ONTROLLER
P
R O D U C T I O N
D
A T A
S
H E E T
CHARACTERISTIC CURVES
FIGURE 9.
— OUTPUT SATURATION VOLTAGE vs.
OUTPUT CURRENT & TEMPERATURE
2.5
FIGURE 10.
— CURRENT SENSE THRESHOLD vs.
ERROR AMPLIFIER OUTPUT
1.0
0.9
2.0
Current Sense Threshold - (V)
Saturation Voltage - (V)
°C
+25
1.5
0.7
0.6
0.5
0.4
0.3
0.2
0.1
5°C
+12
1.0
V
IN
= 15V
Duty Cycle < 5%
0.5
0
100
200
300
400
500
0
1.0
2.0
3.0
4.0
5.0
Output Current - (mA)
Error Amp Output Voltage - (V)
FIGURE 11.
— OUTPUT SATURATION VOLTAGE vs.
OUTPUT CURRENT & TEMPERATURE
4.0
Saturation Voltage - (V)
V
IN
= 15V
Duty Cycle < 5%
C
5°
12
+
5°C
+2
3.0
°C
-55
°C
+25
2.0
5°C
+12
1.0
0
100
200
300
400
500
Output Current - (mA)
Copyright © 2000
Rev. 1.4 4/00
12
5°C
25
°C
-55
°C
C
-55°
0.8
9
MICROSEMI [ MICROSEMI CORPORATION ]
