Overview
The UCC2803QDRQ1 is a high-speed, low-power BiCMOS current-mode PWM controller designed by Texas Instruments. This component is part of the UCC2800/1/2/3/4/5 family and is specifically tailored for automotive applications, operating within the temperature range of −40°C to 125°C and qualified according to AEC-Q100 stress test qualification for integrated circuits.
It features a single-ended 1MHz current mode PWM controller with a 4.1V/3.6V under-voltage lockout (UVLO) and supports 100% duty cycle. This makes it an ideal choice for battery-operated systems and other applications requiring robust and efficient power management.
Key Specifications
| Parameter | Value |
|---|---|
| Maximum Duty Cycle | 100% |
| Reference Voltage | 4 V |
| Turn-On Threshold | 4.1 V |
| Turn-Off Threshold | 3.6 V |
| Operating Frequency | 1 MHz |
| Package Type | SOIC (D) with 8 pins |
| Temperature Range | −40°C to 125°C |
| Qualification | AEC-Q100 stress test qualified |
| Low-Level Output Voltage (IOUT = 20 mA) | 0.1 V to 0.4 V |
| Rise Time (CL = 1 nF) | 41 ns to 70 ns |
| Fall Time (CL = 1 nF) | 44 ns to 75 ns |
Key Features
- High-speed, low-power BiCMOS current-mode PWM controller
- Single-ended 1MHz operating frequency
- 100% duty cycle capability
- Under-voltage lockout (UVLO) with thresholds of 4.1V and 3.6V
- Internal full-cycle soft start and leading-edge blanking of the current-sense input
- Low operating supply current (0.5 mA to 1 mA)
- High-level output voltage (VSAT) with low saturation voltage
- AEC-Q100 qualified for automotive applications
Applications
- Battery-operated systems
- Automotive power supplies and systems
- Off-line power supplies requiring high efficiency and reliability
- High-frequency switching power supplies
- Systems needing robust and efficient power management
Q & A
- What is the operating frequency of the UCC2803QDRQ1?
The UCC2803QDRQ1 operates at a frequency of 1 MHz.
- What is the maximum duty cycle of the UCC2803QDRQ1?
The maximum duty cycle is 100%.
- What are the turn-on and turn-off thresholds for the UCC2803QDRQ1?
The turn-on threshold is 4.1 V, and the turn-off threshold is 3.6 V.
- What is the temperature range for the UCC2803QDRQ1?
The component operates within the temperature range of −40°C to 125°C.
- Is the UCC2803QDRQ1 qualified for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What package type does the UCC2803QDRQ1 come in?
The UCC2803QDRQ1 comes in an SOIC (D) package with 8 pins.
- What is the typical operating supply current for the UCC2803QDRQ1?
The typical operating supply current is between 0.5 mA and 1 mA.
- Does the UCC2803QDRQ1 have internal soft start and leading-edge blanking features?
Yes, it includes internal full-cycle soft start and leading-edge blanking of the current-sense input.
- What are the rise and fall times for the UCC2803QDRQ1 with a 1 nF load capacitor?
The rise time is between 41 ns and 70 ns, and the fall time is between 44 ns and 75 ns.
- What are some common applications for the UCC2803QDRQ1?
Common applications include battery-operated systems, automotive power supplies, and off-line power supplies.
