UC2843BN STMicroelectronics, UC2843BN Datasheet - Page 3
![IC CTRLR PWM CURR-MODE 8-MINIDIP](/photos/1/39/13944/497-8-dip_sml.jpg)
UC2843BN
Manufacturer Part Number
UC2843BN
Description
IC CTRLR PWM CURR-MODE 8-MINIDIP
Manufacturer
STMicroelectronics
Datasheet
1.UC3845BD1013TR.pdf
(15 pages)
Specifications of UC2843BN
Pwm Type
Current Mode
Number Of Outputs
1
Frequency - Max
500kHz
Duty Cycle
100%
Voltage - Supply
8.2 V ~ 25 V
Buck
No
Boost
Yes
Flyback
Yes
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
Yes
Operating Temperature
-25°C ~ 85°C
Package / Case
8-DIP (0.300", 7.62mm)
Frequency-max
500kHz
Number Of Pwm Outputs
1
On/off Pin
No
Adjustable Output
No
Switching Freq
500KHz
Operating Supply Voltage (max)
30V
Output Current
1000A
Synchronous Pin
No
Rise Time
50ns
Fall Time
50ns
Operating Temperature Classification
Automotive
Mounting
Through Hole
Pin Count
8
Package Type
PDIP
Duty Cycle (max)
100 %
Output Voltage
4.95 V to 5.05 V
Mounting Style
Through Hole
Switching Frequency
500 KHz
Operating Supply Voltage
30 V
Maximum Operating Temperature
150 C
Minimum Operating Temperature
- 40 C
Topology
Boost or Flyback or Forward
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-3678
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
UC2843BN
Manufacturer:
TI
Quantity:
1 018
Part Number:
UC2843BN
Manufacturer:
ON/安森美
Quantity:
20 000
Company:
Part Number:
UC2843BN.
Manufacturer:
ON
Quantity:
12 000
Company:
Part Number:
UC2843BNG
Manufacturer:
SANYO
Quantity:
1 000
Part Number:
UC2843BNG
Manufacturer:
ON/安森美
Quantity:
20 000
THERMAL DATA
ELECTRICAL CHARACTERISTICS ( [note 1] Unless otherwise stated, these specifications apply for
-25 < T
REFERENCE SECTION
OSCILLATOR SECTION
ERROR AMP SECTION
CURRENT SENSE SECTION
Symbol
R
Symbol
V
f
PSRR
f
th j-amb
I
OSC
OSC
V
V
SVR
f
REF
dischg
BW
V
V
I
OSC
G
e
V
V
OSC
REF
SC
I
I
I
I
REF
REF
b
o
o
b
N
2
V
3
/ V
/ T
/ T Temperature Stability
amb
Thermal Resistance Junction-ambient.
< 85 C for UC284XB; 0 < T
Output Voltage
Line Regulation
Load Regulation
Total Output Variation
Output Noise Voltage
Long Term Stability
Output Short Circuit
Frequency
Frequency Change with Volt. V
Frequency Change with Temp.
Oscillator Voltage Swing
Discharge Current (V
Input Voltage
Input Bias Current
A
Unity Gain Bandwidth
Power Supply Rejec. Ratio
Output Sink Current
Output Source Current
V
V
Gain
Maximum Input Signal
Supply Voltage Rejection
Input Bias Current
Delay to Output
VOL
OUT
OUT
High
Low
Parameter
OSC
=2V) T
Description
T
12V
1
(Note 2)
Line, Load, Temperature
10Hz
(note 2)
T
(note 2)
T
T
T
T
(peak to peak)
T
V
V
2V
T
12V
V
V
V
R
V
R
(note 3 & 4)
V
12
amb
j
amb
j
A
J
A
J
A
J
CC
PIN1
FB
PIN2
PIN2
PIN2
PIN2
PIN1
L
L
= 25 C I
= 25 C
= 25°C (R
= 25°C
= 25°C
= T
= T
= T
= 15K
= 15K
I
= 5V
o
= 12V to 25V
Test Conditions
< 70 C for UC384XB; V
V
V
= 2.3V V
= 2.5V
= 2.7V V
= 2.3V;
= 2.7V;
= 5V (note 3)
V
low
low
low
V
i
=
o
f
i
20mA
i
to T
to T
to T
25V (note 3)
4V
125 C,
25V
25V
10KHz T
T
o
to Ground
to Pin 8
= 6.2k, C
= 1mA
high
high
high
PIN1
PIN1
= 5V
1000Hrs
j
= 1.1V
UC2842B/3B/4B/5B - UC3842B/3B/4B/5B
T
= 25 C
= 1nF)
max.
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
2.85
225
-0.5
-30
4.9
7.8
7.5
0.7
0.9
49
48
65
60
–
–
–
2
5
i
= 15V (note 5); R
UC284XB
-100 -180
250
-0.1
150
Minidip
0.2
0.2
1.6
8.3
6.2
0.8
50
52
90
70
12
70
-1
-2
2
3
5
–
1
–
1
1
3
100
3.15 2.85
275
300
5.1
8.8
8.8
1.1
1.1
-10
20
25
25
55
56
-1
1
–
–
4.82
-0.5
225
-30
7.8
7.6
0.7
0.9
49
48
65
60
–
–
–
2
5
SO8
T
UC384XB
150
= 10K; C
-100 -180
250
-0.1
150
0.2
0.5
8.3
6.2
0.8
0.2
1.6
50
52
90
70
12
70
-2
-1
2
3
5
–
–
1
3
1
5.18
3.15
275
300
8.8
8.8
1.1
1.1
-10
20
25
25
55
56
-2
1
–
–
T
= 3.3nF)
Unit
C/W
mV/ C
Unit
MHz
KHz
KHz
KHz
V/V
mV
mV
mV
mA
mA
mA
mA
mA
dB
dB
dB
ns
%
%
V
V
V
V
V
V
V
3/15
V
A
A