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UC2842AD8 from TI,Texas Instruments

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UC2842AD8

Manufacturer: TI

Current Mode PWM Controller

Partnumber Manufacturer Quantity Availability
UC2842AD8 TI 18311 In Stock

Description and Introduction

Current Mode PWM Controller The UC2842AD8 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:** UC2842AD8  
- **Package:** SOIC-8  
- **Type:** Current-Mode PWM Controller  
- **Topology:** Flyback, Forward, Boost, Buck  
- **Operating Frequency:** Up to 500 kHz  
- **Supply Voltage (VCC):** 8.6V to 30V  
- **Start-Up Voltage:** 16V (typical)  
- **Under-Voltage Lockout (UVLO):** 8.4V (turn-off), 7.9V (turn-on)  
- **Output Current (Peak):** ±1A  
- **Duty Cycle Range:** 0% to 100%  
- **Error Amplifier Gain Bandwidth:** 1 MHz  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**
The UC2842AD8 is a high-performance fixed-frequency current-mode PWM controller designed for DC-DC converter applications. It provides precise regulation with features like under-voltage lockout (UVLO), cycle-by-cycle current limiting, and a trimmed oscillator for accurate frequency control.  

### **Features:**
- **Current-Mode Operation:** Improves loop response and simplifies compensation.  
- **Automatic Feed-Forward Compensation:** Enhances line regulation.  
- **Trimmed Oscillator:** Ensures precise duty cycle control.  
- **High-Current Totem Pole Output:** Directly drives power MOSFETs.  
- **Pulse-by-Pulse Current Limiting:** Protects against overloads.  
- **Soft-Start Capability:** Reduces inrush current during startup.  
- **Low Startup and Operating Current:** Improves efficiency.  
- **Internal Reference Voltage:** 5V with ±1% tolerance.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Current Mode PWM Controller
Partnumber Manufacturer Quantity Availability
UC2842AD8 UNITRODE 119 In Stock

Description and Introduction

Current Mode PWM Controller The UC2842AD8 is a high-performance current-mode PWM controller manufactured by UNITRODE. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** UNITRODE (now part of Texas Instruments)  
- **Package:** 8-Pin SOIC (D8)  
- **Topology:** Current-Mode PWM Controller  
- **Input Voltage Range (VCC):** 8.5V to 30V  
- **Operating Frequency:** Up to 500kHz  
- **Output Drive Current:** ±1A (peak)  
- **Duty Cycle Range:** 0% to 100%  
- **Start-Up Current:** <1mA  
- **Error Amplifier Gain Bandwidth:** 1MHz  
- **Reference Voltage (VREF):** 5V ±1%  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
- The UC2842AD8 is designed for offline and DC-DC converter applications.  
- It provides precise duty cycle control with current-mode operation for improved loop response.  
- Includes a built-in under-voltage lockout (UVLO) feature with hysteresis for reliable start-up.  
- Features include a trimmed oscillator, temperature-compensated reference, and high-current totem-pole output.  

### **Features:**  
- **Current-Mode Operation:** Improves transient response and simplifies loop compensation.  
- **Automatic Feed-Forward Compensation:** Ensures consistent performance over input voltage variations.  
- **Pulse-by-Pulse Current Limiting:** Enhances system protection.  
- **Undervoltage Lockout (UVLO):** Ensures proper start-up and shutdown.  
- **Soft-Start Capability:** Reduces inrush current during start-up.  
- **Latching PWM for Overvoltage Protection:** Prevents damage during fault conditions.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Current Mode PWM Controller
Partnumber Manufacturer Quantity Availability
UC2842AD8 TI/UNITRODE 200 In Stock

Description and Introduction

Current Mode PWM Controller The UC2842AD8 is a PWM controller manufactured by Texas Instruments (TI)/Unitrode.  

### **Specifications:**  
- **Topology:** Current-mode PWM controller  
- **Input Voltage Range:** Up to 30V (start-up), 10V to 30V (operating)  
- **Output Drive Current:** ±1A (peak)  
- **Switching Frequency:** Up to 500kHz  
- **Duty Cycle Range:** 0% to 100%  
- **Reference Voltage:** 5V (±1%)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin SOIC (D8)  

### **Descriptions and Features:**  
- Designed for offline and DC-DC converter applications  
- Current-mode control for improved transient response  
- Automatic feed-forward compensation  
- Latching PWM for cycle-by-cycle current limiting  
- Undervoltage lockout (UVLO) with hysteresis  
- Internal trimmed bandgap reference  
- Low start-up and operating current  
- Compatible with voltage-mode operation  

This device is commonly used in power supply designs, including flyback, forward, and boost converters.

Application Scenarios & Design Considerations

Current Mode PWM Controller
Partnumber Manufacturer Quantity Availability
UC2842AD8 TI Pb-free 3272 In Stock

Description and Introduction

Current Mode PWM Controller The UC2842AD8 is a high-performance current-mode PWM controller manufactured by Texas Instruments (TI). Below are the factual details from Ic-phoenix technical data files:

### **Manufacturer:**  
Texas Instruments (TI)  

### **Pb-Free Specifications:**  
- The UC2842AD8 is **Pb-free (RoHS compliant)**.
- It meets the environmental standards for lead-free soldering processes.

### **Descriptions:**  
- The UC2842AD8 is a fixed-frequency pulse-width modulation (PWM) controller.
- It operates in **current-mode control**, providing improved loop response and simplified compensation.
- Designed for **offline and DC-DC converter applications**.
- Features include **under-voltage lockout (UVLO)**, **current sensing**, and **programmable oscillator**.

### **Features:**  
- **Current-Mode Operation**: Ensures cycle-by-cycle current limiting.
- **Adjustable Switching Frequency**: Up to **500 kHz**.
- **Under-Voltage Lockout (UVLO)**: Ensures proper startup and shutdown.
- **High-Current Totem Pole Output**: Suitable for driving power MOSFETs.
- **Low Startup Current**: Typically **< 1 mA**.
- **Internal Trimmed Bandgap Reference**: Provides stable voltage regulation.
- **Pulse-by-Pulse Current Limiting**: Enhances system protection.
- **Automatic Feed-Forward Compensation**: Simplifies feedback loop design.

This information is based solely on the manufacturer's specifications for the UC2842AD8 from TI.

Application Scenarios & Design Considerations

Current Mode PWM Controller

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