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Home » NEWEST Products » New by Manufacturer » Maxim Integrated » MAX8903 1-Cell Li+ DC-DC Chargers from Maxim Integrated
NEWEST Products
Maxim MAX8903 2A 1-Cell Li+ DC-DC Chargers

Maxim Integrated MAX8903 2A 1-Cell Li+
DC-DC Chargers

Maxim Integrated MAX8903 2A 1-Cell Li+ DC-DC Chargers for USB and Adapter Power are integrated 1-cell Li+ chargers and Smart Power Selectors™ with dual (AC adapter and USB) power inputs. Maxim Integrated MAX8903 switch mode chargers deliver 4MHz switching, eliminating heat and allowing tiny external components. MAX8903 devices feature optimized smart power control to make the best use of limited USB or adapter power. Battery charge current and SYS output current limit are independently set. Maxim Integrated MAX8903 DC-DC Chargers are offered in various versions, allowing for design flexibility to choose key parameters, such as system regulation voltage, battery pre-qualification threshold, and battery regulation voltage.

Features
  • Efficient DC-DC Converter Eliminates Heat
  • 4MHz Switching for Tiny External Components
  • Instant On—Works with No/Low Battery
  • Dual Current-Limiting Inputs—AC Adapter or USB Automatic Adapter/USB/Battery Switchover to Support Load Transients
    • 50mΩ System-to-Battery Switch
    • Supports USB Spec
  • Thermistor Monitor
  • Integrated Current-Sense Resistor
  • No External MOSFETs or Diodes
  • 4.1V to 16V Input Operating Voltage Range
Applications
  • PDAs, Palmtops, and Wireless Handhelds
  • Personal Navigation Devices
  • Smart Cell Phones
  • Portable Multimedia Players
  • Mobile Internet Devices
  • Ultra Mobile PCs
Part Number Switching Frequency MHz) Minimum SYS Regulation Voltage (V) SYS Regulation Voltage (V) SYS Load Regulation (mV/A) Power-Enable On Battery Detection
MAX8903A 4 3 4.4 40 No
MAX8903B 4 3 4.325 25 Yes
MAX8903C 4 3.4 4.4 40 No
MAX8903D 4 3.4 4.4 40 No
MAX8903E 4 3 4.325 25 Yes
MAX8903G 1 3 4.325 25 Yes

Typical Operating Circuit

Typical Operating Circuit
  • Maxim Integrated
  • Power Management
  • Semiconductors|Integrated Circuits|IC-Power Management