SG3844Y SEMICOA, SG3844Y Datasheet - Page 7
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SG3844Y
Manufacturer Part Number
SG3844Y
Description
Manufacturer
SEMICOA
Datasheet
1.SG3844Y.pdf
(12 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SG3844Y
Manufacturer:
NEC
Quantity:
5 510
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