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MAX1574ETB from MAX,MAXIM - Dallas Semiconductor

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MAX1574ETB

Manufacturer: MAX, MAXIM

180mA / 1x/2x / White LED Charge Pump in 3mm x 3mm TDFN

Partnumber Manufacturer Quantity Availability
MAX1574ETB MAX, MAXIM 3067 In Stock

Description and Introduction

180mA / 1x/2x / White LED Charge Pump in 3mm x 3mm TDFN The MAX1574ETB is a white LED step-up converter manufactured by Maxim Integrated (now part of Analog Devices). Below are its key specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 2.6V to 5.5V  
- **Output Voltage:** Up to 15V (adjustable)  
- **Number of LED Channels:** 4  
- **LED Current per Channel:** Up to 30mA  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 85%  
- **Package Type:** 10-pin TDFN (3mm x 3mm)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The MAX1574ETB is a high-efficiency, step-up DC-DC converter designed to drive up to four white LEDs in parallel. It is optimized for backlighting applications in portable devices such as smartphones, PDAs, and digital cameras. The device uses a current-mode PWM control scheme to ensure stable LED brightness across varying input voltages.  

### **Features:**  
- **High-Efficiency Operation:** Up to 85% efficiency with low quiescent current.  
- **PWM Brightness Control:** Supports external PWM dimming for brightness adjustment.  
- **Integrated Power MOSFET:** Eliminates the need for an external switch.  
- **Overvoltage Protection (OVP):** Prevents damage to LEDs by limiting output voltage.  
- **Low Noise Operation:** Minimizes EMI interference.  
- **Small Footprint:** 10-pin TDFN package for space-constrained designs.  

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

Application Scenarios & Design Considerations

180mA / 1x/2x / White LED Charge Pump in 3mm x 3mm TDFN

Alternative Part Number

  • TPS61040DBVR --: Boost converter in SOT-23-5 with similar input range and switching frequency, widely available and pin-compatible in function for small LCD bias supplies.
  • LT1932ES6 --: Constant-current boost LED driver in SOT-23-6, comparable topology and current regulation suitable for display backlight applications.
  • AP3012KTR-G1 --: Compact boost converter with integrated switch, similar voltage and current capability, good cost-effective substitute for low-power bias rails.
  • LT1932ES6#TRPBF --: Constant-current boost LED driver in SOT-23-6 with similar topology and voltage range, good functional substitute when driving LEDs.

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