4 Channel Multiphase Buck DC/DC Controller 28-VQFN The TPS40090RHDTG4 is a synchronous buck controller manufactured by Texas Instruments (TI)/Burr-Brown (BB).
### **Specifications:**
- **Input Voltage Range:** 4.5V to 28V
- **Output Voltage Range:** Adjustable down to 0.7V
- **Switching Frequency:** 300kHz (adjustable)
- **Maximum Duty Cycle:** 100%
- **Operating Temperature Range:** -40°C to +125°C
- **Package:** 28-Pin VQFN (RHD)
- **Control Method:** Voltage Mode PWM
- **Synchronous Rectification:** Yes
- **Efficiency:** Up to 95%
- **Protection Features:** Overcurrent, undervoltage lockout (UVLO), thermal shutdown
### **Descriptions:**
The TPS40090RHDTG4 is a high-performance synchronous buck controller designed for step-down DC-DC conversion in power supply applications. It supports a wide input voltage range and provides high efficiency with synchronous rectification.
### **Features:**
- **Wide Input Voltage Range:** 4.5V to 28V
- **Adjustable Output Voltage:** Down to 0.7V
- **Programmable Switching Frequency:** Up to 300kHz
- **100% Duty Cycle Operation:** Allows dropout operation
- **Voltage Mode Control:** Ensures stable operation
- **Synchronous Rectification:** Improves efficiency
- **Integrated MOSFET Drivers:** Reduces external component count
- **Protection Features:** Overcurrent, UVLO, and thermal shutdown
- **Small Footprint:** 28-pin VQFN package
This information is sourced from the manufacturer's datasheet.
