Current-Mode PWM Controller The TL3845D-8 is a current-mode PWM controller manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** TL3845D-8
- **Package:** SOIC-8
- **Type:** Current-Mode PWM Controller
- **Operating Voltage Range:** 7V to 30V
- **Output Duty Cycle:** 0% to 100%
- **Switching Frequency:** Up to 500kHz
- **Peak Output Current:** ±1A (sink/source)
- **Error Amplifier Bandwidth:** 1MHz
- **Start-Up Current:** <1mA
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
- The TL3845D-8 is a high-performance fixed-frequency current-mode PWM controller.
- It is designed for DC-DC converter and power supply applications.
- The device features a trimmed oscillator for precise duty cycle control.
- It includes a high-gain error amplifier, current sensing comparator, and a totem-pole output stage.
### **Features:**
- **Current-Mode Operation:** Provides improved loop response and simplified feedback compensation.
- **Under-Voltage Lockout (UVLO):** Ensures proper operation within the specified voltage range.
- **Adjustable Oscillator Frequency:** Allows flexibility in design.
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.
- **Internal Reference Voltage:** 5V with ±1% accuracy.
- **Low Start-Up and Operating Current:** Improves efficiency.
- **Totem-Pole Output:** Capable of driving power MOSFETs directly.
This information is based on the manufacturer's datasheet and technical documentation.
