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L497D1 from ST,ST Microelectronics

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L497D1

Manufacturer: ST

HALL EFFECT PICKUP IGNITION CONTROLLER

Partnumber Manufacturer Quantity Availability
L497D1 ST 4099 In Stock

Description and Introduction

HALL EFFECT PICKUP IGNITION CONTROLLER The L497D1 is a monolithic step-down switching regulator manufactured by STMicroelectronics. Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 8V to 55V  
- **Output Voltage Range:** 3.3V to 50V (adjustable via external resistors)  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 100kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** TO-220 (5 pins)  

### **Descriptions:**
- The L497D1 is a step-down (buck) DC-DC converter designed for high-efficiency power supply applications.  
- It integrates a power switch, oscillator, error amplifier, and protection features.  
- Suitable for industrial, automotive, and consumer electronics applications requiring stable voltage regulation.  

### **Features:**
- **Internal Power Switch:** Reduces external component count.  
- **Soft-Start Function:** Limits inrush current during startup.  
- **Current Limiting & Thermal Shutdown:** Protects against overloads and overheating.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Low Standby Current:** Improves efficiency in light-load conditions.  
- **Under-Voltage Lockout (UVLO):** Ensures proper operation below minimum input voltage.  

For detailed application notes and schematics, refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

HALL EFFECT PICKUP IGNITION CONTROLLER

Alternative Part Number

  • MC34063EBD --: Widely used DC-DC switching regulator controller in the same class as the L497 series, available in SOIC package and suitable for buck converter designs.
  • LM2576-5.0 --: Simple step-down switching regulator with integrated switch, commonly used as a drop-in functional replacement for L497-type buck regulators in many power supply designs.
  • MC33063ADR2G --: Versatile DC-DC converter controller in SOIC-8, pin-compatible with many L497 applications and widely stocked as an alternative switching regulator IC.
  • MC34063A --: Widely available DC-DC switching regulator IC with similar step-down/step-up/inverting functionality and comparable current capability, commonly used as a drop-in substitute in many designs.
  • LM2576 --: Simple switcher buck regulator with integrated switch, similar voltage/current range and easy-to-use fixed/adjustable output, suitable replacement for power supply designs using L497D1.
  • MC33063A --: Versatile DC-DC converter IC with similar switching regulator topology and operating voltage range, offering a functionally equivalent alternative for many L497D1 applications.

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