UC3843AD Microsemi Analog Mixed Signal Group, UC3843AD Datasheet - Page 3

• Manufacturer Part Number: UC3843AD
• Description: IC CTRLR PWM CURRENT MOSE 14SOIC
• Manufacturer: Microsemi Analog Mixed Signal Group

Specifications of UC3843AD

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 500kHz
• Duty Cycle: 100%
• Voltage - Supply: 8.2 V ~ 25 V
• Buck: Yes
• Boost: Yes
• Flyback: Yes
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 14-SOIC (3.9mm Width), 14-SOL
• Frequency-max: 500kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: UC3843ADCT

Copyright © 1995
Rev. 1.2a 10/25
(Unless otherwise specified, these specifications apply over the operating ambient temperatures for UC384xA with 0°C T
UC184xA with -55°C
to the ambient temperature.)
Reference Section
Output Voltage
Line Regulation
Load Regulation
Temperature Stability (Note 2 & 7)
Total Output Variation
Output Noise Voltage (Note 2)
Long Term Stability (Note 2)
Output Short Circuit Current
Oscillator Section
Initial Accuracy (Note 6)
Voltage Stability
Temperature Stability (Note 2)
Amplitude (Note 2)
Discharge Current
Error Amp Section
Input Voltage
Input Bias Current
Open Loop Gain
Unity Gain Bandwidth (Note 2)
Power Supply Rejection Ratio (Note 3)
Output Sink Current
Output Source Current
Output Voltage High Level
Output Voltage Low Level
Current Sense Section
Gain (Note 3 & 4)
Maximum Input Signal (Note 3)
Power Supply Rejection Ratio (Note 3)
Input Bias Current
Delay to Output (Note 2)
Output Section
Output Low Level
Output High Level
Rise Time (Note 2)
Fall Time (Note 2)
UVLO Saturation
Parameter
T
A
125°C; V
CC
=15V; R
P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7
T
Symbol
=10K; C
UGBW
( 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 . )
PSRR
PSRR
C
A
A
V
V
V
V
V
T
V
I
V
I
I
T
T
I
OH
I
REF
SC
VOL
OL
OH
VOL
pd
OH
SAT
OL
OL
B
B
U R R E N T
N
R
F
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
T
=3.3nF. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal
R O D U C T I O N
12
T
1
Over Line, Load, and Temperature
10Hz
T
T
12
T
T
V
V
2
T
12
V
V
V
V
V
12
V
I
I
I
I
T
V
SINK
SINK
SOURCE
SOURCE
J
A
J
MIN
J
j
J
PIN 4
PIN 1
PIN 2
PIN 2
PIN 2
PIN 2
PIN 1
PIN 3
CC
T
= 25°C, V
= 25°C
= 25°C, I
= 25°C
J
= 25°C, C
= 125°C, t = 1000hrs
= 5V, I
= 25°C, C
I
V
= 20mA
= 200mA
O
= 2V, T
= 2.5V
= 2.7V, V
= 2.3V, V
= 2.3V, R
= 2.7V, R
= 5V
= 0 to 2V
V
V
O
V
V
T
= 20mA
= 200mA
IN
CC
CC
CC
A
20mA
f 10kHz, T
M
4V
SINK
25V
25V
T
25V
25V
L
MAX
PIN 4
MIN
L
= 1mA
O D E
= 1nF
= 10mA
L
PIN 1
PIN 1
L
L
= 1nF
= 2V
= 15K to ground
Test Conditions
= 15K to V
T
A
= 1.1V
= 5V
J
P W M C
T
= 25°C
MAX
D
REF
A T A
O N T R O L L E R
UC184xA/284xA/384xA
S
H E E T
Min. Typ. Max. Min. Typ. Max.
4.95 5.00 5.05 4.90 5.00 5.10
2.45 2.50 2.55 2.42 2.50 2.58
-0.5
2.85
UC184xA/284xA
4.9
-30
7.8
7.5
0.7
0.9
47
65
60
13
12
2
5
-100 -180
13.5
13.5
-0.3
-0.8
150
0.2
0.2
1.7
8.3
0.7
0.1
1.5
0.7
A
50
52
90
70
70
50
50
-2
6
6
5
5
1
6
6
3
1
70°C, UC284xA with -40°C T
3.15 2.85
300
150
150
0.4
5.1
8.8
8.8
1.1
1.1
-10
0.4
2.2
1.2
20
25
25
57
-1
1
4.82
-0.5
-30
7.8
7.6
0.7
0.9
47
65
60
13
12
2
5
UC384xA
-100 -180
13.5
13.5
-0.3
-0.8
150
0.2
0.2
1.7
8.3
0.7
0.1
1.5
0.7
50
52
90
70
70
50
50
-2
6
6
5
5
1
6
6
3
1
5.18
3.15
300
150
150
0.4
8.8
8.8
1.1
1.1
-10
0.4
2.2
1.2
20
25
25
57
-2
1
A
Units
mV/°C
MHz
kHz
mA
mA
mA
mA
mA
mV
mV
mV
µA
V/V
µA
85°C,
µV
dB
dB
dB
%
%
ns
ns
ns
V
V
V
V
V
V
V
V
V
V
V
V
3