High Voltage 1.5A, 500kHz Step-Down Switching Regulator with 100碌A Quiescent Current The LT1977IFE is a power operational amplifier manufactured by Linear Technology (now part of Analog Devices). Below are its key specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** Linear Technology (Analog Devices)
- **Part Number:** LT1977IFE
- **Package:** 16-Lead TSSOP
- **Operating Temperature Range:** -40°C to +85°C
- **Supply Voltage Range:** ±5V to ±22V (Dual Supply) or 10V to 44V (Single Supply)
- **Output Current:** ±500mA (Continuous)
- **Slew Rate:** 20V/µs
- **Gain Bandwidth Product:** 20MHz
- **Input Offset Voltage:** 1mV (Max)
- **Input Bias Current:** 20nA (Max)
- **Quiescent Current:** 5mA (Typical)
- **Shutdown Current:** 100µA (Typical)
- **Output Voltage Swing:** Rail-to-Rail
### **Descriptions:**
The LT1977IFE is a high-power operational amplifier designed for applications requiring high output current and wide supply voltage ranges. It features a shutdown mode for power-saving operation and is suitable for driving heavy loads with precision.
### **Features:**
- **High Output Current:** ±500mA continuous output drive.
- **Wide Supply Range:** Operates from ±5V to ±22V (dual supply) or 10V to 44V (single supply).
- **Rail-to-Rail Output:** Ensures maximum dynamic range.
- **Thermal Shutdown Protection:** Prevents damage from overheating.
- **Adjustable Current Limit:** Allows user-defined current limiting.
- **Low Quiescent Current:** 5mA typical for efficient operation.
- **Shutdown Mode:** Reduces power consumption to 100µA when disabled.
- **High Slew Rate:** 20V/µs for fast signal response.
- **Stable with Capacitive Loads:** Designed for stability even with large capacitive loads.
This amplifier is commonly used in power supply control, motor drivers, audio amplifiers, and other high-current applications.
