Datasheet4U Logo Datasheet4U.com

MAX1570 - White LED Current Regulator

General Description

The MAX1570 fractional charge pump drives up to five white LEDs with regulated constant current for uniform intensity.

Key Features

  • o Excellent 0.3% LED-to-LED Current Matching MAX1570.

📥 Download Datasheet

📁 Similar Datasheet

Part Number Description Manufacturer
MAX1572 PWM DC-to-DC Step-Down Converter Maxim Integrated Products
MAX1573 White LED 1x/1.5x Charge Pump Maxim Integrated Products
MAX1575 White LED 1x/1.5x Charge Pump Maxim Integrated Products
MAX1577Y 1.2A White LED Regulating Charge Pump Maxim Integrated Products
MAX1577Z 1.2A White LED Regulating Charge Pump Maxim Integrated Products

Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX157 Dual-Channel CardBus and PCMCIA VCC/VPP Power-Switching Networks
MAX1574 180mA / 1x/2x / White LED Charge Pump in 3mm x 3mm TDFN
MAX150 CMOS High Speed 8Bit A/D Converter with Refrence and Track/Hold Function
MAX1508 Linear Li+ Battery Charger
MAX151 300kHz 10-Bit A/D Converter with Refrence and T/H

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-2526; Rev 0; 7/02 www.DataSheet4U.com White LED Current Regulator with 1x/1.5x High-Efficiency Charge Pump General Description The MAX1570 fractional charge pump drives up to five white LEDs with regulated constant current for uniform intensity. The MAX1570 maintains the highest possible efficiency over the full 1-cell lithium-ion (Li+) battery input voltage range by utilizing a 1x/1.5x fractional charge pump and very-low-dropout current regulators. The MAX1570 operates with 1MHz fixed-frequency switching, allowing for tiny external components. The regulation scheme is optimized to ensure low EMI and low input ripple. An external resistor sets the full-scale LED current, while two digital inputs control on/off and select between three levels of brightness.