Overview
The UC3823ADWTR is a high-performance Pulse Width Modulation (PWM) controller produced by Texas Instruments. This component is part of the UC3823 family, which is known for its enhanced features and performance improvements over earlier models. The UC3823ADWTR is designed for high-speed applications, supporting switching frequencies up to 1 MHz. It is particularly suited for power supply and DC-DC converter designs that require precise control and high reliability.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (VC, VCC) | 22 | V |
| Output Current (DC), OUTA, OUTB | 0.5 | A |
| Output Current (Pulse), OUTA, OUTB | 2.2 | A |
| Analog Input Voltage Range | -0.3 to 7 | V |
| Operating Temperature Range | 0 to 70 | °C |
| Switching Frequency | Up to 1 MHz | |
| Propagation Delay to Output | 50 ns | |
| Startup Supply Current | Typically 100 μA | |
| Package Type | SOIC (DW) | |
| Pins | 16 | |
| RoHS Compliance | Yes |
Key Features
- Compatible with voltage-mode or current-mode control methods
- Practical operation at switching frequencies up to 1 MHz
- High-current dual totem pole outputs (2-A peak)
- Trimmed oscillator discharge current for accurate dead time control
- Low 100-μA startup current
- Pulse-by-pulse current limiting comparator and latched overcurrent comparator with full cycle restart
- Error amplifier gain bandwidth product of 12 MHz and input offset voltage of 2 mV
- UVLO thresholds of 9.2V/8.4V for ease of use in various applications
Applications
The UC3823ADWTR is widely used in various power management and conversion applications, including:
- DC-DC converters
- Switch-mode power supplies
- Motor control systems
- High-frequency switching applications
- Off-line power supplies where high reliability and precision are required
Q & A
- What is the maximum switching frequency of the UC3823ADWTR?
The UC3823ADWTR supports switching frequencies up to 1 MHz.
- What is the typical startup supply current of the UC3823ADWTR?
The typical startup supply current is 100 μA.
- What are the UVLO thresholds for the UC3823ADWTR?
The UVLO thresholds are 9.2V and 8.4V.
- What is the propagation delay to output for the UC3823ADWTR?
The propagation delay to output is 50 ns.
- Is the UC3823ADWTR RoHS compliant?
Yes, the UC3823ADWTR is RoHS compliant.
- What is the package type of the UC3823ADWTR?
The package type is SOIC (DW) with 16 pins.
- What are the key applications of the UC3823ADWTR?
The key applications include DC-DC converters, switch-mode power supplies, motor control systems, and high-frequency switching applications.
- What is the operating temperature range of the UC3823ADWTR?
The operating temperature range is from 0°C to 70°C.
- Does the UC3823ADWTR support both voltage-mode and current-mode control?
Yes, it supports both voltage-mode and current-mode control methods.
- What is the peak output current of the UC3823ADWTR?
The peak output current is 2.2 A.
