Automotive Catalog Current-Mode PWM Controller The UC2842AQ is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are the specifications, descriptions, and features based on Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** Texas Instruments (TI)
- **Part Number:** UC2842AQ
- **Type:** Current-Mode PWM Controller
- **Topology:** Flyback, Forward, Boost, Buck
- **Switching Frequency:** Up to 500 kHz
- **Duty Cycle Range:** 0% to 100%
- **Input Voltage (VCC):** 8.4V to 30V (Start-up: 16V typical, UVLO turn-off: 10V typical)
- **Output Current (Peak):** ±1A
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** SOIC-8
### **Descriptions:**
The UC2842AQ is a fixed-frequency pulse-width modulation (PWM) controller optimized for high-performance power supply applications. It operates in current-mode control, providing improved loop response and simplified compensation. The device includes features such as undervoltage lockout (UVLO), cycle-by-cycle current limiting, and a built-in trimmed oscillator for precise frequency control.
### **Features:**
- **Current-Mode Control:** Enhances transient response and simplifies loop compensation.
- **Undervoltage Lockout (UVLO):** Ensures reliable operation with an adjustable turn-on threshold.
- **Trimmed Oscillator:** Provides precise frequency control with external timing components.
- **High-Current Totem Pole Output:** Capable of driving power MOSFETs directly.
- **Cycle-by-Cycle Current Limiting:** Protects against overloads and short circuits.
- **Soft-Start Capability:** Reduces inrush current during startup.
- **Low Startup Current:** Typically 0.5mA for efficient power-up.
- **Wide Operating Temperature Range:** Suitable for industrial and automotive applications.
This information is strictly based on the manufacturer's datasheet and technical documentation.
