TPS65070RSLT

产品概述

The TPS65070RSLT is a single-chip Power Management IC for portable applications consisting of a battery charger with power path management for a single Li-Ion or Li-Polymer cell. The charger can either be supplied by an USB port on pin USB or by a DC voltage from a wall adapter connected to pin. Three highly efficient 2.25MHz step-down converter is targeted at providing the core voltage, memory and I/O voltage in a processor-based system. The step-down converter enters a low power mode at light load for maximum efficiency across the widest possible range of load currents. For low noise applications the devices can be forced into fixed-frequency PWM using the I2C interface. The step-down converter allows the use of small inductors and capacitors to achieve a small solution size. The TPS6507x device also integrates two general purpose LDOs for an output current of 200mA.

• 10 bit A/D converter
• Touch screen interface
• Undervoltage lockout and battery fault comparator
• Charger/power path management - 2A output current on the power path
• Charger/power path management - Linear charger, 1.5A maximum charge current
• Charger/power path management - Thermal regulation, safety timers
• Charger/power path management - Temperature sense input
• 3 Step-down converters - 2.25MHz fixed-frequency operation
• 3 Step-down converters - up to 1.5A of output current
• 3 Step-down converters - adjustable or fixed output voltage

• 3 Step-down converters - power save mode at light load current
• 3 Step-down converters - output voltage accuracy in PWM mode ±1.5%
• 3 Step-down converters - 100% duty cycle for lowest dropout
• LDOs - fixed output voltage
• LDOs - dynamic voltage scaling on LD02
• LDOs - 200mA maximum output current
• wLED boost converter - Internal dimming using I2C
• wLED boost converter - Up to 25mA per string with internal current sink

应用

便携式器材, 电源管理