SG3843M Microsemi Analog Mixed Signal Group, SG3843M Datasheet - Page 3

• Manufacturer Part Number: SG3843M
• Description: IC PWM CURRENT MODE 8DIP
• Manufacturer: Microsemi Analog Mixed Signal Group

Specifications of SG3843M

• 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-DIP
• Frequency-max: 500kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: SG3843MR; SG3843MR

Copyright © 2000
Rev. 1.6a 10/04
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG1842/SG1843 with -55°C ≤ T
SG2843 with -25°C ≤ T
techniques are used which maintains junction and case temperatures equal to the ambient temperature.)
Supply Voltage Range
Output Current (Peak)
Output Current (Continuous)
Analog Inputs (Pin 2, Pin 3)
Error Amp Output Sink Current
Oscillator Frequency Range
Oscillator Timing Resistor
Oscillator Timing Capacitor
Operating Ambient Temperature Range:
Note 3. Range over which the device is functional.
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability (Note 4)
Total Output Variation (Note 4)
Output Noise Voltage (Note 4)
Long Term Stability (Note 4)
Output Short Circuit
Oscillator Section
Initial Accuracy
Voltage Stability
Temperature Stability (Note 4)
Amplitude
Discharge Current
Error Amp Section
Input Voltage
Input Bias Current
Open Loop Gain
Unity Gain Bandwidth (Note 4)
Power Supply Rejection Ratio
Output Sink Current
Output Source Current
V
V
OUT
OUT
SG1842/43
SG2842/43
SG3842/43
High
Low
Parameter
A
≤ 85°C, SG3842/SG3843 with 0°C ≤ T
Parameter
R E C O M M E N D E D O P E R A T I N G C O N D I T I O N S
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
Symbol
( E l e c t r i c a l C h a r a c t e r i s t i c s c o n t i n u e n e x t p a g e . )
C
PSRR
A
V
VOL
U R R E N T
N
P
E L E C T R I C A L C H A R A C T E R I S T I C S
R O D U C T I O N
T
12 ≤ V
1 ≤ I
Line, Load, Temp.
10Hz ≤ f ≤ 10kHz, T
T
T
12 ≤ V
T
V
T
T
V
2 ≤ V
T
12 ≤ V
V
V
V
V
J
A
J
MIN
J
MIN
J
RT/CT
COMP
VFB
VFB
VFB
VFB
= 25°C
= 25°C, I
= 25°C
= 25°C
= 125°C, 1000hrs
≤ T
≤ T
= 2.7V, V
= 2.3V, V
= 2.3V, R
= 2.7V, R
O
Test Conditions
(Peak to Peak)
O
= 2.5V
≤ 20mA
IN
CC
CC
A
A
≤ 4V
- M
≤ 25V
≤ 25V
≤ T
≤ T
≤ 25V
A
≤ 70°C, V
O
MAX
MAX
O D E
= 1mA
COMP
COMP
L
L
= 15K to gnd
= 15K to V
= 1.1V
= 5V
CC
J
P W M C
= 25°C
Symbol
= 15V (Note 7), R
D
REF
R
C
T
T
A T A
4.95 5.00 5.05 4.95 5.00 5.05 4.90 5.00 5.10
4.90
2.45 2.50 2.55 2.45 2.50 2.55 2.42 2.50 2.58
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
-0.5
-30
7.8
7.0
0.7
47
65
60
2
5
O N T R O L L E R
SG1842/43
S
-100 -180
-0.3
-0.8
0.2
0.2
1.7
8.3
0.7
50
52
90
70
Recommended Operating Conditions
T
6
6
5
5
1
6
6
H E E T
0.001
= 10kΩ, and C
SG1842/SG1843 Series
Min.
0.52
0.1
-55
-25
0
0
5.10 4.90
0.4
8.8
9.0
1.1
20
25
25
57
-1
1
-0.5
-30
7.5
7.2
0.7
47
65
60
2
5
SG2842/43
T
= 3.3nF. Low duty cycle pulse testing
-100 -180
-0.3
-0.8
0.2
0.2
1.7
8.4
0.7
50
52
90
70
Typ.
6
6
5
5
1
6
6
(Note 3)
200
±1
30
5
5.10 4.82
0.4
9.3
9.5
1.1
20
25
25
57
1
1
-0.5
-30
7.5
7.2
0.7
47
65
60
2
5
SG3842/43
Max.
-100 -180
500
150
125
-0.3
-0.8
2.6
1.0
A
0.2
0.2
1.7
8.4
0.7
85
70
50
52
90
70
6
6
5
5
1
6
6
≤ 125°C, SG2842/
5.18
0.4
9.3
9.5
1.1
20
25
25
57
-2
1
Units
Units
mV/°C
kHz
mA
mA
MHz
KΩ
kHz
µF
°C
°C
°C
mA
mA
mA
mA
mA
A
mV
mV
mV
µA
V
V
µV
dB
dB
%
%
V
V
V
V
V
V
3