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MAX8630Y - Charge Pumps

General Description

The MAX8630Y/MAX8630Z charge pumps drive up to 5 white LEDs with regulated constant current up to 125mA total.

By utilizing adaptive 1x/1.5x charge-pump modes and very low-dropout current regulators, they achieve high efficiency over the full 1-cell Li+ battery input voltage range.

Key Features

  • 93% Max/85% Avg. Efficiency (PLED/PBATT) Over Li+ Battery Discharge.
  • 1% LED Current Accuracy.
  • 125mA Total Drive Capability.
  • Adaptive 1x/1.5x Mode Switchover.
  • Single-Wire, Serial-Pulse Dimming (MAX8630Z) Independent On/Off/Dimming for Main and Sub Linear.
  • Full, 31/32nd, 30/32nd, … 1/32nd.
  • Direct-PWM Dimming (MAX8630Y).
  • 15, 18, 20, and 25mA Full-Scale Versions.
  • Low 0.1µA Shutdown Current.
  • Soft-Start Eliminates.

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX8630W Triple-Channel Video Reconstruction Filter/Buffer
MAX8630X Triple-Channel Video Reconstruction Filter/Buffer
MAX8630Z Charge Pumps
MAX8631X White LED Charge Pump
MAX8631Y White LED Charge Pump

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.

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19-3689; Rev 1; 2/07 EVAALVUAAILTAIOBNLEKIT 125mA 1x/1.5x Charge Pumps for 5 White LEDs in 3mm x 3mm TDFN MAX8630Y/MAX8630Z General Description The MAX8630Y/MAX8630Z charge pumps drive up to 5 white LEDs with regulated constant current up to 125mA total. By utilizing adaptive 1x/1.5x charge-pump modes and very low-dropout current regulators, they achieve high efficiency over the full 1-cell Li+ battery input voltage range. The 1MHz fixed-frequency switching allows for tiny external components, and the regulation scheme is optimized to ensure low EMI and low input ripple. An integrated derating function protects the LEDs from overheating during high ambient temperatures. The MAX8630Y/MAX8630Z are factory trimmed for fullscale LED current options of 15mA, 18mA, 20mA, and 25mA.