Low-Power BiCMOS Current-Mode PWM The UCC2805N is a pulse-width modulation (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)
- **Category:** Integrated Circuits (ICs)
- **Subcategory:** PMIC - Voltage Regulators - DC DC Switching Controllers
- **Output Type:** Transistor Driver
- **Function:** Step-Up, Step-Up/Step-Down
- **Topology:** Boost, Flyback
- **Number of Outputs:** 1
- **Output Phases:** 1
- **Voltage - Supply (Vcc/Vdd):** 8V ~ 22V
- **Frequency - Switching:** Up to 1MHz
- **Duty Cycle (Max):** 95%
- **Synchronous Rectifier:** No
- **Clock Sync:** No
- **Operating Temperature:** -25°C ~ 85°C
- **Package/Case:** 8-DIP (0.300", 7.62mm)
### **Descriptions:**
The UCC2805N is a high-performance current-mode PWM controller designed for DC-DC converter applications. It is optimized for boost and flyback topologies, providing precise regulation and high efficiency. The device includes features such as soft-start, current sensing, and error amplification for stable power supply designs.
### **Features:**
- **Current-Mode Control:** Enhances loop response and simplifies compensation.
- **Programmable Switching Frequency:** Up to 1MHz operation.
- **Soft-Start Function:** Reduces inrush current during startup.
- **Undervoltage Lockout (UVLO):** Ensures proper operation within supply voltage range.
- **High-Current Totem-Pole Output:** Directly drives power MOSFETs.
- **Error Amplifier:** Provides precise voltage regulation.
- **Wide Supply Voltage Range:** 8V to 22V operation.
- **Low Startup Current:** Reduces power consumption during initial power-up.
This information is based on TI's official datasheet and product documentation. For detailed application notes and schematics, refer to the manufacturer's resources.
