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Home » NEWEST Products » New by Manufacturer » Maxim Integrated » Maxim Integrated MAX8819 Power Management ICs
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Maxim MAX8819 Power Management ICs

Maxim Integrated MAX8819A/B/C Power Management ICs

Maxim Integrated MAX8819 power management ICs (PMICs) are a complete power solution for MP3 players and other handheld applications. The Maxim Integrated MAX8819A, MAX8819B, and MAX8819C PMICs include a battery charger, step-down converters, and WLED power. These power management ICs feature an input current-limit switch to power the IC from an AC-to-DC adapter or USB port, a 1-cell lithium ion (Li+) or lithium polymer (Li-Poly) charger, three step-down converters, and a step-up converter with serial step dimming for powering two to six white LEDs. All power switches for charging and switching the system load between battery and external power are included on-chip. The MAX8819C offers a sequenced power-up/powerdown of OUT1, OUT2, and then OUT3. MAX8819A/B/C devices feature the Maxim Integrated Smart Power Selector™ that makes the best use of AC-to-DC adapter power or limited USB power. Battery charge current and input current limit are independently set. Input power not used by the system charges the battery.

Features
  • Smart Power Selector
  • Operates with No Battery Present
  • USB/AC Adapter One-Cell Li+ Charger
  • Three 2MHz Step-Down Converters
  • 95% Peak Efficiency
  • 100% Duty Cycle
  • ±3% Output Accuracy over Load/Line/Temperature
  • System Voltage (V)
  • 4.35 (MAX8819A / MAX8819C)
  • 5.3 (MAX8819B)
  • 2 to 6 Series WLED Driver with Dimming Control
  • Active-Low REG1 Reset Output
  • Short-Circuit/Thermal-Overload/Input Undervoltage/Overvoltage Protection
  • Power-Up/Down Sequencing (MAX8819C)
  • Total Solution Size: Less Than 90mm²
Applications
  • MP3 Players
  • Portable GPS Devices
  • Low-Power Handheld Products
  • Cellular Telephones
  • Digital Cameras
  • Handheld Instrumentation
  • PDAs
Block Diagram
Block Diagram
  • Maxim Integrated