Overview
The UCC2813DTR-4G is a high-speed, low-power integrated circuit from Texas Instruments, part of the UCCx813-x family. This device is designed for off-line and DC-to-DC fixed-frequency current-mode switching power supplies. It integrates all the necessary control and drive components, making it a comprehensive solution for power supply applications. The UCC2813DTR-4G is known for its minimal parts count and high performance, making it suitable for a variety of power supply designs.
Key Specifications
| Parameter | Min | Typical | Max | Unit |
|---|---|---|---|---|
| Reference Output Voltage | 4.84 | 5 | 5.1 | V |
| Load Regulation | 10 | 30 | - | mV |
| Oscillator Frequency | 40 | 46 | 52 | kHz |
| Maximum Duty Cycle | 50% | - | - | % |
| Operating Supply Current | 0.5 | 1.2 | - | mA |
| Output Low Level | 0.1 | 0.4 | - | V |
| Output High Level | 0.15 | 0.4 | - | V |
| Temperature Range | -40°C | - | 85°C | °C |
Key Features
- 100-µA typical starting supply current and 500-µA typical operating supply current
- Operation up to 1 MHz oscillator frequency
- Internal soft start and internal fault soft start
- Internal leading-edge blanking of the current-sense signal
- 1-A totem-pole output
- 70-ns typical response from current-sense to gate-drive output
- 1.5% tolerance voltage reference
- Low self-biasing output during UVLO
- Available in surface-mount and PDIP packages
- Minimal external components required
Applications
- Switch mode power supplies (SMPS)
- DC-DC converters
- Power modules
- Industrial power supplies
- Battery-operated power supplies
Q & A
- What is the typical operating supply current of the UCC2813DTR-4G?
The typical operating supply current is 500 µA.
- What is the maximum oscillator frequency of the UCC2813DTR-4G?
The maximum oscillator frequency is up to 1 MHz.
- Does the UCC2813DTR-4G have internal soft start and fault soft start features?
- What is the response time from current-sense to gate-drive output?
The typical response time is 70 ns.
- What is the tolerance of the voltage reference in the UCC2813DTR-4G?
The voltage reference has a 1.5% tolerance.
- In what temperature range can the UCC2813DTR-4G operate?
The device operates from -40°C to 85°C.
- What types of packages are available for the UCC2813DTR-4G?
The device is available in surface-mount and PDIP packages.
- What are some common applications of the UCC2813DTR-4G?
Common applications include switch mode power supplies, DC-DC converters, power modules, industrial power supplies, and battery-operated power supplies.
- Does the UCC2813DTR-4G require many external components?
No, the device requires very few external components.
- What is the maximum duty cycle for the UCC2813DTR-4G?
The maximum duty cycle is 50% for this specific model.
