Overview
The UCC2813PWTR-5 is a low-power, economy BiCMOS current-mode PWM (Pulse Width Modulation) controller produced by Texas Instruments. This integrated circuit is designed for use in off-line and DC-to-DC fixed-frequency current-mode switching power supplies, offering a minimal parts count and high efficiency. The device operates over a wide temperature range of -40°C to 85°C and is packaged in an 8-pin TSSOP (Thin Shrink Small Outline Package).
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | TSSOP (PW) |
| Number of Pins | 8 |
| Operating Temperature Range (°C) | -40 to 85 |
| Starting Supply Current | 100 µA (typical) |
| Operating Supply Current | 500 µA (typical) |
| Maximum Operating Frequency | 1 MHz |
| Maximum Duty Cycle | 49% |
| Output Type | 1-A totem-pole output |
| Voltage Reference Tolerance | 1.5% |
| Topology | Boost, Flyback, Forward Converter |
| Voltage Range | 3.6V ~ 12V |
Key Features
- Internal soft start and internal fault soft start
- Internal leading-edge blanking of the current-sense signal
- 70-ns typical response from current-sense to gate-drive output
- Same pinout as the UCC3802, UC3842, and UC3842A device families
- Low power consumption with 100 µA starting supply current and 500 µA operating supply current
- High-speed operation up to 1 MHz
Applications
The UCC2813PWTR-5 is suitable for a variety of power supply applications, including:
- Off-line power supplies
- DC-to-DC fixed-frequency current-mode switching power supplies
- Battery-operated systems, particularly those requiring lower reference voltages
- Boost, flyback, and forward converter topologies
Q & A
- What is the operating temperature range of the UCC2813PWTR-5?
The operating temperature range is -40°C to 85°C.
- What is the typical starting supply current of the UCC2813PWTR-5?
The typical starting supply current is 100 µA.
- What is the maximum operating frequency of the UCC2813PWTR-5?
The maximum operating frequency is 1 MHz.
- Does the UCC2813PWTR-5 have internal soft start and fault soft start features?
- What is the output configuration of the UCC2813PWTR-5?
The output configuration is a 1-A totem-pole output.
- What are the typical applications of the UCC2813PWTR-5?
It is used in off-line power supplies, DC-to-DC fixed-frequency current-mode switching power supplies, and battery-operated systems.
- What is the voltage reference tolerance of the UCC2813PWTR-5?
The voltage reference tolerance is 1.5%.
- What package type does the UCC2813PWTR-5 come in?
The UCC2813PWTR-5 comes in an 8-pin TSSOP (PW) package.
- Is the UCC2813PWTR-5 suitable for high-speed applications?
- Does the UCC2813PWTR-5 support multiple topologies?
