- RS Stock No.:
- 922-3451
- Mfr. Part No.:
- UC3843AD8
- Manufacturer:
- Texas Instruments
225 In Global stock for delivery in 4-6 working days for West Malaysia, 5-8 working days for Free Trade Zone, and 7-10 working days for East Malaysia.
Price Each (In a Tube of 75)
MYR3.999
units | Per Unit | Per Tube* |
75 - 75 | MYR3.999 | MYR299.925 |
150 - 225 | MYR3.911 | MYR293.325 |
300 + | MYR3.839 | MYR287.925 |
*price indicative |
- RS Stock No.:
- 922-3451
- Mfr. Part No.:
- UC3843AD8
- Manufacturer:
- Texas Instruments
Legislation and Compliance
Product Details
Flyback Controller, Current Control, UC18/UC28/UC38 Series, Texas Instruments
The isolated-flyback power supply controller provides Constant-Voltage (CV) and Constant-Current (CC) output regulation to improve transient response to large load steps. Primary-Side Regulation (PSR) eliminates the need for an Optocoupler.
The Texas Instruments UC3843A family of control devices is a pin-for-pin compatible improved version of theUCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: start-up current is less than 0.5 mA, oscillator discharge is trimmed to 8.3 mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2 V for VCC over 5 V.
Optimized for Off-Line and DC-DC Converters
Low Start-Up Current (< 0.5 mA)
Trimmed Oscillator Discharge Current
Automatic Feedforward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Under voltage Lockout With Hysteresis
Double Pulse Suppression
High-Current Totem Pole Output
Internally-Trimmed Bandgap Reference
Up to 500-kHz Operation
Low Start-Up Current (< 0.5 mA)
Trimmed Oscillator Discharge Current
Automatic Feedforward Compensation
Pulse-by-Pulse Current Limiting
Enhanced Load Response Characteristics
Under voltage Lockout With Hysteresis
Double Pulse Suppression
High-Current Totem Pole Output
Internally-Trimmed Bandgap Reference
Up to 500-kHz Operation
For products that are Customized and under Non-cancellable & Non-returnable, Sales & Conditions apply.
Flyback Controllers, Texas Instruments
Current-Mode and Voltage-Mode PWM Controller
Primary-Side Regulation
Peak Power Mode
Low Power
Primary-Side Regulation
Peak Power Mode
Low Power
Specifications
Attribute | Value |
---|---|
Maximum Switching Frequency | 500 kHz |
Output Current | 1 A |
Number of Outputs | 1 |
Control Method | Current |
Mounting Type | Surface Mount |
Fall Time | 50ns |
Package Type | SOIC |
Rise Time | 50ns |
Pin Count | 8 |
Topology | Boost, Buck, Flyback, Forward |
Dimensions | 4.9 x 3.91 x 1.58mm |
Maximum Duty Cycle | 100% |
Length | 4.9mm |
PWM Controller Type | Current Mode |
Width | 3.91mm |
Height | 1.58mm |
Minimum Operating Temperature | 0 °C |
Maximum Operating Temperature | +70 °C |