SG3844Y SEMICOA, SG3844Y Datasheet - Page 3
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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
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for SG1844/SG1845 with -55°C ≤ T
SG2845 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 (Note 8)
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
SG1844/45
SG2844/45
SG3844/45
High
Low
Parameter
A
≤ 85°C, SG3844/SG3845 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
12V ≤ V
T
12 ≤ V
1 ≤ I
Line, Load, Temp.
10Hz ≤ f ≤ 10kHz, T
T
T
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
A
A
≤ 4V
- M
CC
≤ 25V
≤ T
≤ T
≤ 25V
A
≤ 25V
≤ 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
6.8
0.7
47
65
60
2
5
O N T R O L L E R
SG1844/45
S
-100 -180
-0.3
-0.8
0.2
.02
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
= 10kΩ, and C
SG1844/SG1845 Series
Min.
0.52
0.1
0.001
-55
-25
0
0
5.10 4.90
0.4
9.1
9.3
1.1
20
25
25
57
-1
1
-0.5
-30
7.5
7.2
0.7
47
65
60
2
5
SG2844/45
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
SG3844/45
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, SG2844/
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