BiCMOS Low-Power Current Mode PWM Controller The UCC38C45DGK is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** UCC38C45DGK
- **Type:** Current-Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Operating Frequency:** Up to 1 MHz
- **Input Voltage (VCC):** 4.5V to 40V
- **Output Current (Gate Drive):** 1A (Peak)
- **Duty Cycle Range:** 0% to 100%
- **Switching Frequency Range:** Adjustable via external components
- **Error Amplifier Bandwidth:** 5 MHz
- **Propagation Delay:** 50 ns
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** VSSOP-8 (DGK)
### **Descriptions:**
The UCC38C45DGK is a high-speed, low-power current-mode PWM controller designed for DC-DC converter applications. It provides precise regulation with fast transient response, making it suitable for power supplies in industrial, telecom, and computing systems. The device includes features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and soft-start capability.
### **Features:**
- **Current-Mode Control:** Enhances loop response and simplifies compensation.
- **High-Speed Operation:** Supports switching frequencies up to 1 MHz.
- **Wide Input Voltage Range:** 4.5V to 40V for versatile applications.
- **Adjustable Soft-Start:** Reduces inrush current during startup.
- **Under-Voltage Lockout (UVLO):** Ensures reliable operation under low input voltage conditions.
- **Cycle-by-Cycle Current Limiting:** Protects against overcurrent conditions.
- **Low Power Consumption:** Optimized for efficiency.
- **Synchronization Capability:** Allows external clock synchronization.
- **Small Footprint:** VSSOP-8 package for space-constrained designs.
This information is strictly based on the manufacturer's datasheet and technical documentation.
