Overview
The UCC3813DTR-5 is a low-power economy BiCMOS current-mode PWM (Pulse Width Modulation) controller produced by Texas Instruments. This device is part of the UCC3813-x family, which is designed for high-speed and low-power applications. It is particularly suited for use in battery-operated systems and off-line power supplies due to its flexible configuration options, including different reference voltages and UVLO (Under Voltage Lock Out) thresholds.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Maximum Duty Cycle | 50% | - |
| Reference Voltage | 4 V | V |
| Turn-on Threshold | 4.1 V | V |
| Turn-off Threshold | 3.6 V | V |
| Oscillator Frequency | Up to 1 MHz | - |
| Supply Current | 100 µA (typical starting supply current) | A |
| Operating Temperature Range | 0°C to 70°C | °C |
| Package Type | SOIC (D) 8-pin | - |
| VCC Voltage | Up to 12 V | V |
| Output Current | ±1 A | A |
| Power Dissipation at TA < 25°C | 0.65 W (D package) | W |
Key Features
- 1.5% voltage reference accuracy
- Up to 1-MHz oscillator frequency
- Low self-biasing output during UVLO
- 70-ns response time from current sense to output
- Very few external components required
- Available in surface-mount and PDIP packages
- True low-output-impedance 2-MHz operational amplifier for the error amplifier
Applications
The UCC3813DTR-5 is ideal for various power management applications, including battery-operated systems, off-line power supplies, and other high-efficiency power conversion systems. Its low power consumption and high-speed operation make it suitable for a wide range of electronic devices that require efficient and reliable power management.
Q & A
- What is the maximum duty cycle of the UCC3813DTR-5?
The maximum duty cycle of the UCC3813DTR-5 is 50%. - What is the reference voltage for the UCC3813DTR-5?
The reference voltage for the UCC3813DTR-5 is 4 V. - What are the turn-on and turn-off thresholds for the UCC3813DTR-5?
The turn-on threshold is 4.1 V, and the turn-off threshold is 3.6 V. - What is the typical starting supply current for the UCC3813DTR-5?
The typical starting supply current is 100 µA. - What is the operating temperature range for the UCC3813DTR-5?
The operating temperature range is from 0°C to 70°C. - What package type is the UCC3813DTR-5 available in?
The UCC3813DTR-5 is available in an SOIC (D) 8-pin package. - What is the maximum VCC voltage for the UCC3813DTR-5?
The maximum VCC voltage is up to 12 V. - What is the output current capability of the UCC3813DTR-5?
The output current capability is ±1 A. - How much power can the UCC3813DTR-5 dissipate at TA < 25°C?
The power dissipation at TA < 25°C is 0.65 W for the D package. - What are some common applications for the UCC3813DTR-5?
The UCC3813DTR-5 is commonly used in battery-operated systems, off-line power supplies, and other high-efficiency power conversion systems.
