Overview
The UC2843AD8TRG4 is a current-mode PWM controller from Texas Instruments, designed for use in off-line and DC-to-DC converters. This integrated circuit is part of the UCx84x family, which provides the necessary features to implement fixed-frequency current-mode control schemes with a minimal number of external components. The UC2843AD8TRG4 operates within a temperature range of -40°C to 85°C and is packaged in an 8-pin SOIC (D) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (D) | |
| Pins | 8 | |
| Operating Temperature Range | -40 to 85 | °C |
| Supply Voltage (VCC) | 30 | V |
| Output Current (IOUT) | ±1 | A |
| Maximum Duty Cycle | 100% | |
| Undervoltage Lockout (UVLO) | 8.4 V / 7.6 V | |
| Start-Up Current | < 1 mA | |
| Maximum Operating Frequency | 500 kHz |
Key Features
- Optimized for off-line and DC-to-DC converters
- Low start-up current (< 1 mA)
- Automatic feedforward compensation
- Pulse-by-pulse current limiting
- Enhanced load-response characteristics
- Undervoltage lockout with hysteresis
- Double-pulse suppression
- High-current totem-pole output
- Internally trimmed bandgap reference
- Error amplifier with low output resistance
Applications
The UC2843AD8TRG4 is suitable for a variety of power supply applications, including:
- Off-line power supplies
- DC-to-DC converters
- Switch-mode power supplies
- High-efficiency power conversion systems
Q & A
- What is the operating temperature range of the UC2843AD8TRG4?
The operating temperature range is -40°C to 85°C.
- What is the maximum supply voltage for the UC2843AD8TRG4?
The maximum supply voltage is 30 V.
- What is the maximum output current of the UC2843AD8TRG4?
The maximum output current is ±1 A.
- What is the undervoltage lockout (UVLO) threshold for the UC2843AD8TRG4?
The UVLO thresholds are 8.4 V and 7.6 V.
- What is the start-up current of the UC2843AD8TRG4?
The start-up current is less than 1 mA.
- What is the maximum operating frequency of the UC2843AD8TRG4?
The maximum operating frequency is 500 kHz.
- What type of package does the UC2843AD8TRG4 come in?
The UC2843AD8TRG4 comes in an 8-pin SOIC (D) package.
- Does the UC2843AD8TRG4 have pulse-by-pulse current limiting?
- Is the UC2843AD8TRG4 RoHS compliant?
- What are some common applications for the UC2843AD8TRG4?
Common applications include off-line power supplies, DC-to-DC converters, and switch-mode power supplies.
