SG3843M Microsemi Analog Mixed Signal Group, SG3843M Datasheet - Page 4
![IC PWM CURRENT MODE 8DIP](/photos/7/54/75460/sg3843m_sml.jpg)
SG3843M
Manufacturer Part Number
SG3843M
Description
IC PWM CURRENT MODE 8DIP
Manufacturer
Microsemi Analog Mixed Signal Group
Datasheet
1.SG3842M.pdf
(14 pages)
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
SG3843MR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SG3843M
Manufacturer:
LINFIN
Quantity:
5 510
SG1842/SG1843 Series
4
Notes: 4. These parameters, although guaranteed, are not 100% tested in
Current Sense Section
Gain (Notes 5 & 6)
Maximum Input Signal (Note 5)
Power Supply Rejection Ratio (Note 5) PSRR
Input Bias Current
Delay to Output (Note 4)
Output Section
Output Low Level
Output High Level
Rise Time
Fall Time
Under-Voltage Lockout Section
Start Threshold
Min. Operation Voltage After Turn-On
PWM Section
Maximum Duty Cycle
Minimum Duty Cycle
Power Consumption Section
Start-Up Current
Operating Supply Current
V
CC
Zener Voltage
5. Parameter measured at trip point of latch with V
production.
Parameter
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
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
Symbol
C
U R R E N T
P
R O D U C T I O N
V
12 ≤ V
I
I
I
I
T
T
1842
1843
1842
1843
V
I
SINK
SINK
SOURCE
SOURCE
CC
J
J
COMP
FB
= 25°C, C
= 25°C, C
= 25mA
= V
= 20mA
= 200mA
Test Conditions
= 5V
= 20mA
= 200mA
CC
ISENSE
- M
VFB
≤ 25V
= 0.
= 0V
L
L
O D E
= 1nF
= 1nF
P W M C
D
A T A
2.85
Min. Typ. Max. Min. Typ. Max. Min. Typ. Max.
0.9
7.8
7.0
13
12
15
93
9
6. Gain defined as: A =
7. Adjust V
O N T R O L L E R
SG1842/43
S
13.5
13.5
150
0.1
1.5
8.4
7.6
0.5
70
50
50
16
10
95
11
34
-2
3
1
H E E T
CC
3.15 2.85
300
150
150
100
-10
1.1
0.4
2.2
9.0
8.3
17
11
17
0
1
above the start threshold before setting at 15V.
(Cont'd.)
0.9
7.8
7.0
13
12
15
90
9
SG2842/43
13.5
13.5
150
0.1
1.5
8.4
7.6
0.5
70
50
50
16
10
95
11
34
∆ V
∆ V
-2
3
1
ISENSE
COMP
3.15 2.85
300
150
150
100
1.1
-10
0.4
2.2
9.0
8.2
17
11
17
0
1
; 0 ≤ V
14.5
0.9
7.8
8.5
7.0
13
12
90
SG3842/43
ISENSE
13.5
13.5
150
0.1
1.5
8.4
7.6
0.5
70
50
50
16
10
95
11
34
-2
3
1
≤ 0.8V.
3.15
17.5
11.5
300
150
150
100
1.1
-10
0.4
2.2
9.0
8.2
17
0
1
Copyright © 2000
Rev. 1.6a 10/04
Units
mA
mA
V/V
µA
dB
ns
ns
ns
%
%
V
V
V
V
V
V
V
V
V
V