描述 Description

The TPS65024x devices are integrated power management ICs for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails. The TPS65024x provide three highly efficient, step-down converters targeted at providing the core voltage, peripheral, I/O, and memory rails in a processor-based system. All three step-down converters enter a low power mode at light load for maximum efficiency across the widest possible range of load currents. The converters can be forced into fixed-frequency PWM mode by pulling the MODE pin high.

特性 Features

? 1.6-A, 1.0-A, or 0.8-A, 97% Efficient Step-Down Converter for System Voltage (VDCDC1)
? 3.3 V or 2.80 V or Adjustable

? 1.6-A, 1.0-A, or 0.8-A, up to 95% Efficient Step-Down Converter for Memory Voltage (VDCDC2)
? 1.8 V or 2.5 V or Adjustable

? 0.8-A, 90% Efficient Step-Down Converter for Processor Core (VDCDC3)
? Two Selectable Voltages for VDCDC3
? TPS650240:
? DEFDCDC3 = LOW: VO = 1.0 V
? DEFDCDC3 = HIGH: VO = 1.3 V

? TPS650241:
? DEFDCDC3 = LOW: VO = 0.9 V
? DEFDCDC3 = HIGH: VO= 1.375 V

? TPS650242:
? DEFDCDC3 = LOW: VO = 1.0 V
? DEFDCDC3 = HIGH: VO = 1.5 V

? TPS650243:
? DEFDCDC3 = LOW: VO = 1.0 V
? DEFDCDC3 = HIGH: VO = 1.2 V

? TPS650244:
? DEFDCDC3 = LOW: VO = 1.55 V
? DEFDCDC3 = HIGH: VO = 1.6 V

? TPS650245:
? DEFDCDC3 = LOW: VO = 0.9 V
? DEFDCDC3 = HIGH: VO = 1.1 V


? 30-mA LDO for Vdd_alive
? 2 × 200-mA General-Purpose LDOs (LDO1 and LDO2)
? Dynamic Voltage Management for Processor Core
? LDO1 and LDO2 Voltage Externally Adjustable
? Separate Enable Pins for Inductive Converters
? 2.25-MHz Switching Frequency
? 85-μA Quiescent Current
? Thermal Shutdown Protection