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UC2842 Series

Current Mode PWM

Manufacturer: Texas Instruments

Catalog(20 parts)

PartCurrent - Supply▲▼Package / Case▲▼Package / CaseApplicationsOperating Temperature▲▼Operating Temperature▲▼Supplier Device PackageVoltage - Input▲▼Voltage - Input▲▼Voltage - Supply▲▼Voltage - Supply▲▼Mounting TypePackage / Case▲▼Package / Case▲▼Clock Sync▲▼TopologyNumber of Outputs▲▼FunctionSynchronous Rectifier▲▼Voltage - Supply (Vcc/Vdd)▲▼Voltage - Supply (Vcc/Vdd)▲▼Output Phases▲▼Duty Cycle (Max)▲▼Output TypeOutput ConfigurationControl Features
Texas Instruments
UC2842AQD8R
Power Supply Controller PWM Controller 8-SOIC
0.010999999940395355 A
0.003899999894201755 m
8-SOIC
PWM Controller
-40 °C
125 °C
8-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842D
Power Supply Controller PWM Controller 14-SOIC
0.010999999940395355 A
14-SOIC
PWM Controller
-40 °C
85 °C
-3 V
6.300000190734863 V
28 V
12 V
Surface Mount
0.003899999894201755 m
0.003911599982529879 m
Texas Instruments
UC2842D8G4
Power Supply Controller PWM Controller 8-SOIC
0.010999999940395355 A
0.003899999894201755 m
8-SOIC
PWM Controller
-40 °C
85 °C
8-SOIC
-3 V
6.300000190734863 V
28 V
12 V
Surface Mount
Texas Instruments
UC2842ADWTR
Power Supply Controller PWM Controller 16-SOIC
0.010999999940395355 A
16-SOIC
PWM Controller
-40 °C
85 °C
16-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842AD8G4
Power Supply Controller PWM Controller 8-SOIC
0.010999999940395355 A
0.003899999894201755 m
8-SOIC
PWM Controller
-40 °C
85 °C
8-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842N
Power Supply Controller PWM Controller 8-PDIP
0.010999999940395355 A
0.007619999814778566 m
8-DIP
PWM Controller
-40 °C
85 °C
8-PDIP
-3 V
6.300000190734863 V
28 V
12 V
Through Hole
0.007619999814778566 m
Texas Instruments
UC2842ANG4
Power Supply Controller PWM Controller 8-PDIP
0.010999999940395355 A
0.007619999814778566 m
8-DIP
PWM Controller
-40 °C
85 °C
8-PDIP
-3 V
6.300000190734863 V
30 V
10 V
Through Hole
0.007619999814778566 m
Texas Instruments
UC2842ADW
Power Supply Controller PWM Controller 16-SOIC
0.010999999940395355 A
16-SOIC
PWM Controller
-40 °C
85 °C
16-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842ADTR
Power Supply Controller PWM Controller 14-SOIC
0.010999999940395355 A
14-SOIC
PWM Controller
-40 °C
85 °C
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
0.003899999894201755 m
0.003911599982529879 m
Texas Instruments
UC2842ADG4
Power Supply Controller PWM Controller 14-SOIC
0.010999999940395355 A
14-SOIC
PWM Controller
-40 °C
85 °C
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
0.003899999894201755 m
0.003911599982529879 m
Texas Instruments
UC2842AD8TR
Power Supply Controller PWM Controller 8-SOIC
0.010999999940395355 A
0.003899999894201755 m
8-SOIC
PWM Controller
-40 °C
85 °C
8-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842AD8
Power Supply Controller PWM Controller 8-SOIC
0.010999999940395355 A
0.003899999894201755 m
8-SOIC
PWM Controller
-40 °C
85 °C
8-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842AQD8
Power Supply Controller PWM Controller 8-SOIC
0.010999999940395355 A
0.003899999894201755 m
8-SOIC
PWM Controller
-40 °C
125 °C
8-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842AQDR
Power Supply Controller PWM Controller 14-SOIC
0.010999999940395355 A
14-SOIC
PWM Controller
-40 °C
125 °C
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
0.003899999894201755 m
0.003911599982529879 m
Texas Instruments
UC2842D8TR
Power Supply Controller PWM Controller 8-SOIC
0.010999999940395355 A
0.003899999894201755 m
8-SOIC
PWM Controller
-40 °C
85 °C
8-SOIC
-3 V
6.300000190734863 V
28 V
12 V
Surface Mount
Texas Instruments
UC2842ADWTRG4
Power Supply Controller PWM Controller 16-SOIC
0.010999999940395355 A
16-SOIC
PWM Controller
-40 °C
85 °C
16-SOIC
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
Texas Instruments
UC2842DTR
Power Supply Controller PWM Controller 14-SOIC
0.010999999940395355 A
14-SOIC
PWM Controller
-40 °C
85 °C
-3 V
6.300000190734863 V
28 V
12 V
Surface Mount
0.003899999894201755 m
0.003911599982529879 m
Texas Instruments
UC2842AD
Power Supply Controller PWM Controller 14-SOIC
0.010999999940395355 A
14-SOIC
PWM Controller
-40 °C
85 °C
-3 V
6.300000190734863 V
30 V
10 V
Surface Mount
0.003899999894201755 m
0.003911599982529879 m
Texas Instruments
UC2842DR
Boost, Buck, Buck-Boost, Flyback, Forward Regulator Positive, Isolation Capable Output Step-Up, Step-Down, Step-Up/Step-Down DC-DC Controller IC 14-SOIC
14-SOIC
-40 °C
85 °C
Surface Mount
0.003899999894201755 m
0.003911599982529879 m
Boost, Buck, Buck-Boost, Flyback, Forward
1 ul
Step-Down, Step-Up, Step-Up/Step-Down
12 V
28 V
1 ul
0.9700000286102296 ul
Transistor Driver
Isolation Capable, Positive
Frequency Control
Texas Instruments
UC2842P
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
-40 °C
85 °C
8-PDIP
Through Hole
0.007619999814778566 m
Boost, Buck, Buck-Boost, Flyback, Forward
1 ul
Step-Down, Step-Up, Step-Up/Step-Down
12 V
28 V
1 ul
0.9700000286102296 ul
Transistor Driver
Isolation Capable, Positive
Frequency Control

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.