High-Performance Current-Mode PWM Controller 14-SOIC -40 to 85 The TL2845BD 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)
- **Type:** Current-Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Input Voltage Range (VCC):** 8.5V to 30V
- **Operating Frequency:** Up to 500 kHz (adjustable)
- **Output Duty Cycle:** 0% to 50% (maximum)
- **Output Current (Source/Sink):** 200mA (peak)
- **Error Amplifier Bandwidth:** 1 MHz
- **Start-Up Current:** 0.5 mA (typical)
- **Undervoltage Lockout (UVLO):** 8.4V (turn-on), 7.6V (turn-off)
- **Package:** SOIC-8 (D)
### **Descriptions:**
The TL2845BD is a high-performance current-mode PWM controller designed for DC-DC converter and power supply applications. It provides precise regulation with features like cycle-by-cycle current limiting, adjustable switching frequency, and under-voltage lockout (UVLO) for reliable operation.
### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.
- **Adjustable Switching Frequency:** Up to 500 kHz for flexible design.
- **Low Start-Up Current:** Enables efficient power-up.
- **Internal Soft-Start:** Reduces inrush current during startup.
- **Undervoltage Lockout (UVLO):** Ensures proper operation within voltage range.
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.
- **Error Amplifier with Wide Bandwidth:** Supports fast transient response.
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.
This information is based solely on the manufacturer's datasheet and technical documentation.
