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MAX8645YETI from MAXIM,MAXIM - Dallas Semiconductor

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MAX8645YETI

Manufacturer: MAXIM

1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFN

Partnumber Manufacturer Quantity Availability
MAX8645YETI MAXIM 3803 In Stock

Description and Introduction

1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFN The MAX8645YETI is a step-down DC-DC converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.6V to VIN  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 2.5MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 6-pin TDFN (3mm x 3mm)  

### **Descriptions:**
- The MAX8645YETI is a high-efficiency, synchronous step-down DC-DC converter designed for portable applications.  
- It integrates both high-side and low-side MOSFETs, reducing external component count.  
- The device operates at a fixed switching frequency of 2.5MHz, allowing the use of small inductors and capacitors.  
- It features a pulse-width modulation (PWM) mode for high efficiency and a forced-PWM mode for low-noise operation.  

### **Features:**
- **High Efficiency:** Up to 95% efficiency with integrated synchronous rectification.  
- **Low Quiescent Current:** 30µA (typical) in standby mode.  
- **Internal Soft-Start:** Limits inrush current during startup.  
- **Overcurrent and Thermal Protection:** Ensures safe operation under fault conditions.  
- **Adjustable Output Voltage:** Set via an external resistor divider.  
- **Small Footprint:** 6-pin TDFN package (3mm x 3mm) for space-constrained applications.  

This information is sourced from the manufacturer's datasheet.

Application Scenarios & Design Considerations

1x/1.5x/2x White LED Charge Pumps with Two LDOs in 4mm x 4mm TQFN

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