SG3844DM Microsemi Analog Mixed Signal Group, SG3844DM Datasheet - Page 7
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SG3844DM
Manufacturer Part Number
SG3844DM
Description
IC PWM CURRENT MODE 8SOIC
Manufacturer
Microsemi Analog Mixed Signal Group
Datasheet
1.SG3845M.pdf
(12 pages)
Specifications of SG3844DM
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
50%
Voltage - Supply
8.2 V ~ 30 V
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
0°C ~ 70°C
Package / Case
8-SOIC
Frequency-max
500kHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SG3844DM
Manufacturer:
Microsemi Analog Mixed Signal
Quantity:
1 791
Copyright © 2000
Rev. 1.6c
FIGURE 1. — DROPOUT VOLTAGE vs. TEMPERATURE
FIGURE 3. — CURRENT SENSE TO OUTPUT DELAY vs.
10.0
220
200
180
160
140
120
9.6
9.2
8.8
8.4
8.0
-75
-75
-50
-50
TEMPERATURE
Junction Temperature - (°C)
Junction Temperature - (°C)
-25
-25
SG1845
0
0
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
SG1844
25
25
C
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
V
PIN3
- M
= 1.1V
100
100
O D E
125
125
P W M C
D
A T A
FIGURE 2. — OSCILLATOR TEMPERATURE STABILITY
FIGURE 4. — START-UP CURRENT vs. TEMPERATURE
O N T R O L L E R
-10
0.7
0.6
0.5
0.4
0.3
0.2
-2
-4
-6
-8
S
2
0
-75
-75
H E E T
SG1844/SG1845 Series
-50
-50
Junction Temperature - (°C)
Junction Temperature - (°C)
-25
-25
0
0
SG1845
SG1844
25
25
V
Duty Cycle = 50%
IN
50
50
= 15V
75
75
100
100
125
125
7