SG3844Y SEMICOA, SG3844Y Datasheet - Page 6
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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
6
SG1844/SG1845 Series
FIGURE #
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. CURRENT SENSE THRESHOLD vs. ERROR AMPLIFIER OUTPUT
11. OUTPUT SATURATION VOLTAGE vs. OUTPUT CURRENT AND
DROPOUT VOLTAGE vs. TEMPERATURE
OSCILLATOR TEMPERATURE STABILITY
CURRENT SENSE TO OUTPUT DELAY vs. TEMPERATURE
START-UP CURRENT vs. TEMPERATURE
REFERENCE VOLTAGE vs. TEMPERATURE
START-UP VOLTAGE THRESHOLD vs. TEMPERATURE
START-UP VOLTAGE THRESHOLD vs. TEMPERATURE
OSCILLATOR DISCHARGE CURRENT vs. TEMPERATURE
OUTPUT SATURATION VOLTAGE vs. OUTPUT CURRENT AND
TEMPERATURE (SINK TRANSISTOR)
TEMPERATURE (SOURCE TRANSISTOR)
GRAPH / CURVE INDEX
Characteristic Curves
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
C
U R R E N T
P
R O D U C T I O N
- M
O D E
P W M C
D
A T A
FIGURE #
12. OSCILLATOR TIMING CIRCUIT
13. OSCILLATOR FREQUENCY vs. R
FIGURE #
14. CURRENT SENSE SPIKE SUPPRESSION
15. MOSFET PARASITIC OSCILLATIONS
16. BIPOLAR TRANSISTOR DRIVE
17. ISOLATED MOSFET DRIVE
18. ADJUSTABLE BUFFERED REDUCTION OF CLAMP LEVEL WITH
19. EXTERNAL DUTY CYCLE CLAMP AND MULTI-UNIT
20. OSCILLATOR CONNECTION
21. ERROR AMPLIFIER CONNECTION
SOFTSTART
SYNCHRONIZATION
O N T R O L L E R
S
H E E T
Typical Applications Section
Application Information
FIGURE INDEX
T
FOR VARIOUS C
T
Copyright © 2000
Rev. 1.6c