UC2843BD1G ON Semiconductor, UC2843BD1G Datasheet - Page 3

• Manufacturer Part Number: UC2843BD1G
• Description: IC CTRLR CURRENT MODE HP 8-SOIC
• Manufacturer: ON Semiconductor

Specifications of UC2843BD1G

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 275kHz
• Duty Cycle: 96%
• Voltage - Supply: 11 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-SOIC (3.9mm Width)
• Frequency-max: 275kHz
• Duty Cycle (max): 96 %
• Output Voltage: 4.95 V to 5.05 V
• Output Current: 1000 mA
• Mounting Style: SMD/SMT
• Switching Frequency: 500 KHz
• Operating Supply Voltage: 30 V
• Maximum Operating Temperature: + 85 C
• Fall Time: 50 ns
• Minimum Operating Temperature: - 25 C
• Rise Time: 50 ns
• Synchronous Pin: No
• Topology: Boost, Flyback, Forward
• Input Voltage: 15V
• Frequency: 250kHz
• Power Dissipation Pd: 702mW
• Supply Voltage Range: 8.5V To 30V
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• Operating Temperature Range: -25°C To +85°C
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3. Adjust V
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
5. This parameter is measured at the latch trip point with V
6. Comparator gain is defined as: A
ELECTRICAL CHARACTERISTICS
T
REFERENCE SECTION
OSCILLATOR SECTION
ERROR AMPLIFIER SECTION
CURRENT SENSE SECTION
A
Reference Output Voltage (I
Line Regulation (V
Load Regulation (I
Temperature Stability
Total Output Variation over Line, Load, and Temperature
Output Noise Voltage (f = 10 Hz to 10 kHz, T
Long Term Stability (T
Output Short Circuit Current
Frequency
Frequency Change with Voltage (V
Frequency Change with Temperature, T
Oscillator Voltage Swing (Peak−to−Peak)
Discharge Current (V
Voltage Feedback Input (V
Input Bias Current (V
Open Loop Voltage Gain (V
Unity Gain Bandwidth (T
Power Supply Rejection Ratio (V
Output Current
Output Voltage Swing
Current Sense Input Voltage Gain (Notes 5 and 6)
Maximum Current Sense Input Threshold (Note 5)
Power Supply Rejection Ratio (V
Input Bias Current
Propagation Delay (Current Sense Input to Output)
T
T
is the operating ambient temperature range that applies [Note 4], unless otherwise noted.)
low
high
T
T
T
T
Sink (V
Source (V
High State (R
Low State (R
A
J
J
J
= 0°C for UC3842B, UC3843B; −25°C for UC2842B, UC2843B; −40°C for UC3842BV, UC3843BV
= 25°C
= 25°C (R
= 25°C, T
= T
= +70°C for UC3842B, UC3843B; +85°C for UC2842B, UC2843B; +105°C for UC3842BV, UC3843BV
CC
low
O
= 1.1 V, V
above the Startup threshold before setting to 15 V.
to T
O
= 5.0 V, V
A
T
L
L
high
= T
= 6.2 k, C
= 15 k to V
O
CC
= 15 k to ground, V
= 1.0 mA to 20 mA)
low
FB
Characteristics
OSC
A
= 12 V to 25 V)
FB
= 125°C for 1000 Hours)
= 5.0 V)
to T
J
FB
= 2.7 V)
= 2.0 V)
= 25°C)
O
O
T
O
high
= 2.3 V)
= 2.5 V)
ref
= 1.0 nF)
= 2.0 V to 4.0 V)
= 1.0 mA, T
T
, V
A
CC
CC
= T
FB
V
CC
= 12 V to 25 V, Note 5)
= 12 V to 25 V)
low
= 2.7 V)
DV Output Compensation
FB
DV Current Sense Input
= 12 V to 25 V)
UC284XB, UC384XB
UC284XB, UC384XB
UC284XB, UC384XB
UC284XB, UC384XB
A
to T
= 2.3 V)
(V
= T
J
CC
= 25°C)
high
J
low
= 25°C)
= 15 V [Note 3], R
to T
UC384XBV
UC384XBV
UC384XBV
UC384XBV
high
http://onsemi.com
FB
= 0 V.
t
Df
Df
PLH(In/Out)
Symbol
Reg
Reg
T
I
PSRR
PSRR
I
OSC
V
OSC
Source
A
f
dischg
I
V
V
V
V
V
BW
= 10 k, C
I
OSC
Sink
V
T
V
OSC
A
I
VOL
I
SC
3
S
IB
OH
IB
FB
OL
ref
ref
S
V
th
n
load
line
/DV
/DT
T
− 0.5
4.95
− 30
2.45
2.85
Min
225
= 3.3 nF. For typical values T
4.9
7.8
7.5
0.7
2.0
5.0
0.9
49
48
65
60
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
UC284XB
− 0.1
− 2.0
− 85
−1.0
Typ
250
150
5.0
2.0
3.0
0.2
5.0
0.2
1.0
1.6
8.3
2.5
1.0
6.2
0.8
3.0
1.0
50
52
90
70
12
70
−
−
−
−
−
−
−
−180
Max
5.05
2.55
−1.0
3.15
275
−10
300
5.1
1.0
8.8
8.8
1.1
1.1
20
25
55
56
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
− 0.5
4.82
− 30
2.42
2.85
2.85
0.85
Min
225
4.9
7.8
7.6
7.2
0.7
2.0
5.0
0.9
49
48
65
60
−
−
−
−
−
−
−
−
−
−
−
−
−
−
A
UC384XB, XBV
= 25°C, for min/max values
− 0.1
− 2.0
− 85
−1.0
Typ
250
150
5.0
2.0
3.0
0.2
5.0
0.2
0.5
1.6
8.3
2.5
1.0
6.2
0.8
0.8
3.0
3.0
1.0
1.0
50
52
90
70
12
70
−
−
−
−
−180
− 2.0
Max
5.18
2.58
3.15
3.25
275
−10
300
5.1
1.0
8.8
8.8
8.8
1.1
1.2
1.1
1.1
20
25
55
56
−
−
−
−
−
−
−
−
−
−
−
−
mV/°C
MHz
Unit
kHz
V/V
mV
mV
mV
mA
mA
mA
mV
mA
dB
dB
dB
mA
ns
%
%
V
V
V
V
V
V