Current-Mode PWM Controller The TL3842DR is a current-mode PWM controller manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Type:** Current-Mode PWM Controller
- **Package:** SOIC-8
- **Input Voltage Range:** Up to 30V (for VCC)
- **Operating Frequency:** Adjustable up to 500 kHz
- **Duty Cycle Range:** 0% to 100%
- **Output Drive Current:** ±200 mA (peak)
- **Reference Voltage:** 5V (precision)
- **Error Amplifier Bandwidth:** 1 MHz (typical)
- **Start-Up Current:** < 1 mA
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
The TL3842DR is a high-performance fixed-frequency current-mode PWM controller designed for DC-DC converter applications. It provides precise voltage regulation with features like cycle-by-cycle current limiting, under-voltage lockout (UVLO), and a trimmed oscillator for accurate frequency control. The device is commonly used in power supplies, battery chargers, and offline converters.
### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.
- **Adjustable Oscillator Frequency:** Allows flexibility in design.
- **Under-Voltage Lockout (UVLO):** Ensures proper start-up and shutdown.
- **Trimmed Reference Voltage:** 5V ±1% accuracy.
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.
- **Low Start-Up Current:** Reduces power consumption during start-up.
- **SOIC-8 Package:** Compact and suitable for space-constrained applications.
This information is based solely on the manufacturer's datasheet and technical documentation.
