MAX1574

PRODUCTION

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

White LED Charge Pump in 3mm x 3mm TDFN Achieves 83% Average Efficiency

Data Sheet (Rev. 0) Product Selection Table
Part Models
2
1ku List Price
Starting From $2.07
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Part Details

  • Up to 180mA (60mA/LED) Drive Capability
  • 83% Average Efficiency (PLED / PBATT) Over Li+ Battery Discharge
  • 0.5% (typ) LED Current Matching
  • Adaptive 1x/2x Mode Switchover
  • Low Input Ripple and EMI
  • 5% to 100% Dimming Through Single-Wire Serial Pulse Interface
  • Low 0.1µA Shutdown Current
  • 2.7V to 5.5V Supply Voltage Range
  • Soft-Start Limits Inrush Current
  • Output Overvoltage Protection
  • Thermal-Shutdown Protection
  • 10-Pin 3mm x 3mm TDFN Package
MAX1574
180mA, 1x/2x, White LED Charge Pump in 3mm x 3mm TDFN
MAX1574: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Technical Articles 6

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Hardware Ecosystem

Parts Product Life Cycle Description
Inductorless (Charge Pump) LED Drivers 3
MAX1573
PRODUCTION White LED 1x/1.5x Charge Pump in UCSP and Thin QFN
MAX1570
PRODUCTION White LED Current Regulator with 1x/1.5x High-Efficiency Charge Pump
MAX1910
PRODUCTION 1.5x/2x High-Efficiency White LED Charge Pumps
Product 4
MAX1575
White LED 1x/1.5x Charge Pump for Main and Sub-Displays
MAX1912
1.5x/2x High-Efficiency White LED Charge Pumps
MAX1582
High-Efficiency Step-Up Converters for White LED Main and Subdisplay Backlighting
MAX1583
White LED Camera-Flash Boost Converter
Regulated Buck-Boost Charge Pumps 1
MAX1595
PRODUCTION Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump
Step-Up (Boost) LED Drivers 6
MAX1848
PRODUCTION White LED Step-Up Converter in SOT23
MAX1561
PRODUCTION High-Efficiency, 26V Step-Up Converters for Two to Six White LEDs
MAX1599
PRODUCTION High-Efficiency, 26V Step-Up Converters for Two to Six White LEDs
MAX1553
PRODUCTION High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs
MAX1554
PRODUCTION High-Efficiency, 40V Step-Up Converters for 2 to 10 White LEDs
MAX1698
PRODUCTION High-Efficiency Step-Up Current Regulator for LEDs
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Evaluation Kits

MAX1574EVKIT

Evaluation Kit for the MAX1574

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Features and Benefits

  • Up to 180mA (60mA/LED) Drive Capability
  • 83% Average Efficiency (PLED /PBATT) over Li+ Battery Discharge
  • 0.6% LED Current Matching
  • Adaptive 1x/2x Mode Switchover
  • Low Input Ripple and EMI
  • 5% to 100% Single-Wire Serial Pulse Dimming
  • 0.1µA Low Shutdown Current
  • 2.7V to 5.5V Supply Voltage Range
  • 10-Pin, 3mm x 3mm TDFN Package
  • Fully Assembled and Tested

    • Product Details

    The MAX1574 evaluation kit (EV kit) is a fully assembled and tested circuit for evaluating the MAX1574 white LED 1x/2x charge pump. The EV kit comes with 3 white surface-mount LEDs installed. A pulse generator circuit is provided on the EV kit for easy evaluation of the sin-gle- wire serial pulse-dimming feature of the MAX1574. The pulse generator also has a flash setting for flashing the LEDs at full brightness.

    Applications

    • Camera Strobes/Flashes and Movie Lights
    • Cell Phones/Smartphones
    • LCD Backlights
    • PDAs, Digital Cameras, and Camcorders
    MAX1574EVKIT
    Evaluation Kit for the MAX1574

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