TI TPS65070RSLT

The TPS6507x series of devices are single-chip power management ICs (PMICs) suitable for the following portable applications: They include a battery charger with power path management for single-cell lithium-ion or lithium-polymer batteries. This charger can be powered either by a USB port on the USB pin or by a DC voltage provided by a wall adapter connected to the AC pin. Three high-efficiency 2.25MHz step-down converters are used to provide core voltage, memory, and I/O voltage for a processor-based system. To achieve maximum efficiency over the widest possible load current range, these step-down converters enter a low-power mode at light loads.

• Charger/Power Path Management:
  • 2A output current linear charger with power path; 1.5A max charging current
  • USB input current limiting: 100mA/500mA/800mA/1300mA
  • Thermal regulation, safety timer
  • Temperature sense input
• 3 Buck Converters:
  • 2.25MHz fixed-frequency operation
  • Output current up to 1.5A
  • Adjustable or fixed output voltage, VIN range 2.8V to 6.3V
  • Power save mode at light load
  • Output voltage accuracy ±1.5% in PWM mode
  • Typical quiescent current 19μA per converter
  • 100% duty cycle capability for minimum dropout
• LDO:
  • Dynamic voltage scaling on fixed-output LDO2
  • 20μA quiescent current
  • 200mA max output current
  • VIN range 1.8V to 6.3V
• wLED Boost Converter:
  • Internal dimming via I2C
  • Up to z×10 LEDs
  • Up to 25mA per LED string with internal current sink
• I2C interface
• 10-bit ADC
• Touchscreen interface
• UVLO and battery fault comparator

• Portable navigation systems
• PDAs, handheld computers
• OMAP and low-power DSP power supply