TPS65800 Status:ACTIVE

Product Information

Features

• BATTERY CHARGER
  • Complete charge management solution for single Li-Ion/Li-Pol cell with thermal foldback, dynamic power management, and pack temperature sensing, supporting up to 1.5-A maximum charge current
  • Programmable charge parameters for AC adapter and USB port operation
• INTEGRATED POWER SUPPLIES
  • A total of 9 LDOs are integrated:Six adjustable output LDOs (1.25-V to 3.3-V) Two fixed-voltage LDOs (3.3-V)One RTC backup supply with low leakage (3.1-V)
  • Two 600-mA, programmable dc/dc buck converters (0.6-V to 3.4-V) with enable, standby-mode operation, and automatic low-power mode setting
• DISPLAY FUNCTIONS
  • Two open-drain PWM outputs with programmable frequency and duty cycle. Can be used to control keyboard backlight, vibrator, or other external peripheral functions
  • RGB LED driver with programmable flashing period and individual R/G/B brightness control
  • Constant-current white LED driver, with programmable current level, brightness control, and overvoltage protection can drive up to 6 LEDs in series configuration
• SYSTEM MANAGEMENT
  • Dual input power path function with input current limiting and OV protection
  • POR function with programmable masking monitors all integrated supplies outputs
  • Software and hardware reset functions
  • 8-channel integrated A/D samples system parameters with single conversion, peak detection, or averaging operating modes
• HOST INTERFACE
  • Host can set system parameters and access system status using I²C interface
  • Interrupt function with programmable masking signals system status modifiction to host
  • 3 GPIO ports, programmable as drivers, integrated A/D trigger or buck converters standby mode control
• APPLICATIONS
  • PDAs
  • Smart Phones
  • MP3s
  • Internet Appliances
  • Handheld Devices

Description

The TPS65800 provides an easy to use, fully integrated solution for handheld devices, integrating charge management, multiple regulated power supplies, system management and display functions, in a small thermally-enhanced 8x8-mm package. The high level of integration enables typical board area space savings of 70% when compared to equivalent discrete solutions, while implementing a high-performance and flexible solution, portable across multiple platforms. If required, an external host may control the TPS65800 via I²C interface, with access to all integrated systems. The I²C enables setting output voltages, current thresholds, and operation modes. Internal registers have a complete set of status information, enabling easy diagnostics, and host-controlled handling of fault conditions. The TPS65800 can operate in stand-alone mode, with no external host control, if the internal power-up defaults are compatible with the system requirements