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UC2843 Series

Current Mode PWM

Manufacturer: Texas Instruments

Catalog(16 parts)

PartPackage / Case▲▼Package / Case▲▼Package / CaseOperating Temperature▲▼Operating Temperature▲▼Mounting TypeVoltage - Supply▲▼Voltage - Supply▲▼Voltage - Input▲▼Voltage - Input▲▼GradeCurrent - Supply▲▼QualificationApplicationsSupplier Device PackagePackage / Case▲▼Output Phases▲▼TopologyOutput TypeNumber of Outputs▲▼FunctionOutput ConfigurationSynchronous Rectifier▲▼Control FeaturesVoltage - Supply (Vcc/Vdd)▲▼Voltage - Supply (Vcc/Vdd)▲▼Duty Cycle (Max)▲▼Clock Sync▲▼
Texas Instruments
UC2843ADTR
Power Supply Controller PWM Controller 14-SOIC
0.003899999894201755 m
0.003911599982529879 m
14-SOIC
85 °C
-40 °C
Surface Mount
30 V
7.599999904632568 V
-3 V
6.300000190734863 V
Automotive
0.010999999940395355 A
AEC-Q100
PWM Controller
Texas Instruments
UC2843AD8TR
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
85 °C
-40 °C
Surface Mount
30 V
7.599999904632568 V
-3 V
6.300000190734863 V
Automotive
0.010999999940395355 A
AEC-Q100
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843D
Power Supply Controller PWM Controller 14-SOIC
0.003899999894201755 m
0.003911599982529879 m
14-SOIC
85 °C
-40 °C
Surface Mount
28 V
12 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
Texas Instruments
UC2843D8TR
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
85 °C
-40 °C
Surface Mount
28 V
12 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843AQD8R
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
125 °C
-40 °C
Surface Mount
30 V
7.900000095367432 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843AQD8RQ1
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
125 °C
-40 °C
Surface Mount
30 V
7.900000095367432 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843AD8TRG4
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
85 °C
-40 °C
Surface Mount
30 V
7.599999904632568 V
-3 V
6.300000190734863 V
Automotive
0.010999999940395355 A
AEC-Q100
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843D8G4
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
85 °C
-40 °C
Surface Mount
28 V
12 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843D8TRG4
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
85 °C
-40 °C
Surface Mount
28 V
12 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843AQ
Power Supply Controller PWM Controller 20-PLCC (9x9)
20-LCC (J-Lead)
125 °C
-40 °C
Surface Mount
30 V
7.900000095367432 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
20-PLCC (9x9)
Texas Instruments
UC2843AD8
Power Supply Controller PWM Controller 8-SOIC
8-SOIC
85 °C
-40 °C
Surface Mount
30 V
7.599999904632568 V
-3 V
6.300000190734863 V
Automotive
0.010999999940395355 A
AEC-Q100
PWM Controller
8-SOIC
0.003899999894201755 m
Texas Instruments
UC2843P
Boost, Buck, Buck-Boost, Flyback, Forward Regulator Positive, Isolation Capable Output Step-Up, Step-Down, Step-Up/Step-Down DC-DC Controller IC 8-PDIP
0.007619999814778566 m
8-DIP
85 °C
-40 °C
Through Hole
8-PDIP
0.007619999814778566 m
1 ul
Boost, Buck, Buck-Boost, Flyback, Forward
Transistor Driver
1 ul
Step-Down, Step-Up, Step-Up/Step-Down
Isolation Capable, Positive
Frequency Control
12 V
28 V
0.9700000286102296 ul
Texas Instruments
UC2843NG4
Power Supply Controller PWM Controller 8-PDIP
0.007619999814778566 m
8-DIP
85 °C
-40 °C
Through Hole
28 V
12 V
-3 V
6.300000190734863 V
0.010999999940395355 A
PWM Controller
8-PDIP
0.007619999814778566 m
Texas Instruments
UC2843ANG4
Power Supply Controller PWM Controller 8-PDIP
0.007619999814778566 m
8-DIP
85 °C
-40 °C
Through Hole
30 V
7.599999904632568 V
-3 V
6.300000190734863 V
Automotive
0.010999999940395355 A
AEC-Q100
PWM Controller
8-PDIP
0.007619999814778566 m
Texas Instruments
UC2843ADW
Boost, Buck, Flyback, Forward Regulator Positive, Isolation Capable Output Step-Up, Step-Down, Step-Up/Step-Down DC-DC Controller IC 16-SOIC
16-SOIC
85 °C
-40 °C
Surface Mount
16-SOIC
1 ul
Boost, Buck, Flyback, Forward
Transistor Driver
1 ul
Step-Down, Step-Up, Step-Up/Step-Down
Isolation Capable, Positive
Frequency Control
7.599999904632568 V
30 V
0.959999978542328 ul
Texas Instruments
UC2843AN
Power Supply Controller PWM Controller 8-PDIP
0.007619999814778566 m
8-DIP
85 °C
-40 °C
Through Hole
30 V
7.599999904632568 V
-3 V
6.300000190734863 V
Automotive
0.010999999940395355 A
AEC-Q100
PWM Controller
8-PDIP
0.007619999814778566 m

Description

AI
The UC284xB family of control ICs provides the necessary features to implement off-line or DC to DC fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include a trimmed oscillator for precise DUTY CYCLE CONTROL under voltage lockout featuring start-up current less than 0.5mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off-state. Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges. The UC2842B and UC2844B have UVLO thresholds of 16V (on) and 10V (off), ideally suited off-line applications The corresponding thresholds for the UC2843B and UC2845B are 8.5V and 7.9V. The UC2842B and UC2843B can operate to duty cycles approaching 100%. A range of the zero to < 50 % is obtained by the UC2844B and UC2845B by the addition of an internal toggle flip flop which blanks the output off every other clock cycle.