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UC3843AD - 14-SOIC

UC3843AD

Active
Texas Instruments

30-V, 1A, 500KHZ CURRENT MODE PWM CONTROLLER WITH 8.4V/7.6V UVLO 100% DUTY CYCLE 0°C TO 70°C

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Search across all available documentation for this part.

DocumentsDN-26 UC3842A Low-Cost Start-up and Fault Protection CircuitUCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers+10
UC3843AD - 14-SOIC

UC3843AD

Active
Texas Instruments

30-V, 1A, 500KHZ CURRENT MODE PWM CONTROLLER WITH 8.4V/7.6V UVLO 100% DUTY CYCLE 0°C TO 70°C

Deep-Dive with AI

DocumentsDN-26 UC3842A Low-Cost Start-up and Fault Protection CircuitUCC38C42 Family of High-Speed BiCMOS Current-Mode PWM Controllers+10

Technical Specifications

Parameters and characteristics for this part

SpecificationUC3843AD
ApplicationsPWM Controller
Current - Supply11 mA
Mounting TypeSurface Mount
Operating Temperature [Max]70 °C
Operating Temperature [Min]0 °C
Package / Case14-SOIC
Package / Case [x]0.154 in
Package / Case [y]3.9 mm
Voltage - Input [Max]6.3 V
Voltage - Input [Min]-3 V
Voltage - Supply [Max]30 VDC
Voltage - Supply [Min]7.6 V

UC3843A Series

30-V, 1A, 500KHz current mode PWM controller with 8.4V/7.6V UVLO 100% duty cycle 0°C to 70°C

PartApplicationsCurrent - SupplyPackage / Case [x]Package / Case [y]Package / CaseOperating Temperature [Max]Operating Temperature [Min]Voltage - Supply [Max]Voltage - Supply [Min]Mounting TypeVoltage - Input [Min]Voltage - Input [Max]Supplier Device PackagePackage / CasePackage / CaseDuty Cycle (Max) [Max]Number of OutputsSynchronous RectifierOutput ConfigurationTopologyOutput TypeOutput PhasesClock SyncFunctionControl Features
Texas Instruments
UC3843ADTR
PWM Controller
11 mA
0.154 in
3.9 mm
14-SOIC
70 °C
0 °C
30 VDC
7.6 V
Surface Mount
-3 V
6.3 V
Texas Instruments
UC3843D8
PWM Controller
11 mA
0.154 in
3.9 mm
8-SOIC
70 °C
0 °C
28 V
12 V
Surface Mount
-3 V
6.3 V
8-SOIC
Texas Instruments
UC3843NG4
PWM Controller
11 mA
8-DIP
70 °C
0 °C
28 V
12 V
Through Hole
-3 V
6.3 V
8-PDIP
0.3 in
7.62 mm
Texas Instruments
UC3843AD
PWM Controller
11 mA
0.154 in
3.9 mm
14-SOIC
70 °C
0 °C
30 VDC
7.6 V
Surface Mount
-3 V
6.3 V
Texas Instruments
UC3843D
0.154 in
3.9 mm
14-SOIC
70 °C
0 °C
Surface Mount
Texas Instruments
UC3843DR-8
0.154 in
3.9 mm
8-SOIC
70 °C
0 °C
Surface Mount
8-SOIC
97 %
1
Isolation Capable
Positive
Boost
Buck
Buck-Boost
Flyback
Forward
Transistor Driver
1
Step-Down
Step-Up
Step-Up/Step-Down
Frequency Control
Texas Instruments
UC3843ANG4
PWM Controller
11 mA
8-DIP
70 °C
0 °C
30 VDC
7.6 V
Through Hole
-3 V
6.3 V
8-PDIP
0.3 in
7.62 mm
Texas Instruments
UC3843AD8TR
PWM Controller
11 mA
0.154 in
3.9 mm
8-SOIC
70 °C
0 °C
30 VDC
7.6 V
Surface Mount
-3 V
6.3 V
8-SOIC
Texas Instruments
UC3843D8TR
PWM Controller
11 mA
0.154 in
3.9 mm
8-SOIC
70 °C
0 °C
28 V
12 V
Surface Mount
-3 V
6.3 V
8-SOIC
Texas Instruments
UC3843AD8
PWM Controller
11 mA
0.154 in
3.9 mm
8-SOIC
70 °C
0 °C
30 VDC
7.6 V
Surface Mount
-3 V
6.3 V
8-SOIC

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

DistributorPackageQuantity$
DigikeyTube 1$ 1.27
10$ 1.14
50$ 1.08
100$ 0.89
250$ 0.83
500$ 0.73
1000$ 0.58
2500$ 0.54
5000$ 0.51
Texas InstrumentsTUBE 1$ 1.05
100$ 0.81
250$ 0.60
1000$ 0.43

Description

General part information

UC3843A Series

The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.

The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.