Overview
The UCC2813DTR-4 is a low-power, economy BiCMOS current-mode PWM controller produced by Texas Instruments. This device is part of the UCC2813-x series, which is designed for use in off-line and DC-to-DC fixed-frequency current-mode switching power supplies. It offers a high level of integration, including all the necessary control and drive components, making it suitable for applications with minimal parts count.
The UCC2813DTR-4 operates over a wide temperature range from -40°C to 85°C and is available in an 8-pin SOIC (D) package. It is compatible with the pin configuration of the UC384x device family and adds features such as internal full-cycle soft start and internal leading-edge blanking of the current-sense input.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC (D) | - |
| Pins | 8 | - |
| Operating Temperature Range | -40 to 85 | °C |
| Starting Supply Current | 100 µA | - |
| Operating Supply Current | 500 µA | - |
| Maximum Frequency | 1 MHz | - |
| Gate Drive | 1 A | - |
| UVLO Thresholds On/Off | 12.5/8.3 V | - |
| Maximum Duty Cycle | 50% | - |
| Voltage Reference Tolerance | 1.5% | - |
| Response Time from Current Sense to Gate Drive | 70 ns | - |
Key Features
- Low power consumption with 100-µA typical starting supply current and 500-µA typical operating supply current.
- Operation up to 1 MHz frequency.
- Internal soft start and internal fault soft start capabilities.
- 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.
- Same pinout as the UCC3802, UC3842, and UC3842A device families.
- Support for boost, flyback, and forward topologies.
- RoHS compliant.
Applications
- Switch-mode power supplies (SMPS).
- DC-DC converters.
- Power modules.
- Industrial power supplies (PSUs).
- Battery-operated power supplies.
- Off-line power supplies.
Q & A
- What is the operating temperature range of the UCC2813DTR-4?
The UCC2813DTR-4 operates from -40°C to 85°C.
- What is the maximum frequency of operation for the UCC2813DTR-4?
The maximum frequency of operation is up to 1 MHz.
- What is the gate drive capability of the UCC2813DTR-4?
The gate drive capability is 1 A.
- What are the UVLO thresholds for the UCC2813DTR-4?
The UVLO thresholds are 12.5 V for turn-on and 8.3 V for turn-off.
- What is the maximum duty cycle for the UCC2813DTR-4?
The maximum duty cycle is 50%.
- Is the UCC2813DTR-4 RoHS compliant?
- What are the typical supply currents for the UCC2813DTR-4?
The typical starting supply current is 100 µA, and the typical operating supply current is 500 µA.
- What is the response time from current sense to gate drive for the UCC2813DTR-4?
The response time is typically 70 ns.
- What are the supported topologies for the UCC2813DTR-4?
The device supports boost, flyback, and forward topologies.
- Is the UCC2813DTR-4 recommended for new designs?
