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ZXLD1937 from ZETEX

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ZXLD1937

Manufacturer: ZETEX

ADJUSTABLE LED DRIVER WITH INTERNAL SWITCH IN TSOT23-5

Partnumber Manufacturer Quantity Availability
ZXLD1937 ZETEX 600 In Stock

Description and Introduction

ADJUSTABLE LED DRIVER WITH INTERNAL SWITCH IN TSOT23-5 The ZXLD1937 is a high-efficiency LED driver IC manufactured by ZETEX (now part of Diodes Incorporated).  

### **Specifications:**  
- **Input Voltage Range:** 6V to 30V  
- **Output Current:** Adjustable up to 1.5A  
- **Switching Frequency:** Up to 1MHz  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT23-5  

### **Descriptions:**  
- Designed for driving high-brightness LEDs efficiently.  
- Features a built-in MOSFET for compact designs.  
- Supports PWM dimming for brightness control.  
- Includes thermal shutdown and overcurrent protection.  

### **Features:**  
- **High Efficiency:** Minimizes power loss.  
- **Wide Input Voltage Range:** Suitable for automotive and industrial applications.  
- **Adjustable Output Current:** Set via an external resistor.  
- **Compact Design:** Small footprint for space-constrained applications.  
- **Protection Features:** Thermal shutdown and overcurrent protection enhance reliability.  

The ZXLD1937 is commonly used in automotive lighting, industrial lighting, and portable lighting applications.

Application Scenarios & Design Considerations

ADJUSTABLE LED DRIVER WITH INTERNAL SWITCH IN TSOT23-5

Alternative Part Number

  • AL8805W5-7 --: Pin-compatible buck LED driver in SOT-25 with similar input range and current capability; Diodes acquired Zetex so this is a direct successor family.
  • PT4115 --: Widely used buck constant-current LED driver with comparable voltage and current ratings, commonly substituted for ZXLD1937 in LED lighting designs.
  • HV9910B --: Versatile buck LED driver controller with wide input range and adjustable current, suitable as a functional replacement where layout can be adapted.

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