Current-Mode PWM Controller The TL3842D is a PWM controller IC manufactured by Texas Instruments (TI). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Type:** Current Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Input Voltage (VCC):** 8.5V to 30V
- **Operating Frequency:** Up to 500 kHz
- **Output Duty Cycle:** 0% to 100%
- **Output Current (Source/Sink):** 200 mA (Peak)
- **Reference Voltage:** 5V ±1%
- **Error Amplifier Gain Bandwidth:** 1 MHz
- **Start-Up Current:** < 1 mA
- **Undervoltage Lockout (UVLO):** 8V (Turn-On), 7.6V (Turn-Off)
- **Package:** SOIC-8 (D)
### **Descriptions:**
The TL3842D 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, soft-start capability, and undervoltage lockout (UVLO). It is widely used in power supplies, battery chargers, and industrial applications.
### **Features:**
- **Current-Mode Control:** Improves loop response and simplifies compensation.
- **Adjustable Oscillator Frequency:** Set via external resistor and capacitor.
- **Soft-Start Function:** Reduces inrush current during startup.
- **Pulse-by-Pulse Current Limiting:** Enhances system reliability.
- **Internal Trimmed Bandgap Reference:** Ensures stable 5V reference output.
- **Low Startup and Operating Current:** Improves efficiency.
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low-voltage conditions.
This information is based solely on the manufacturer's datasheet and technical documentation.
