1 Features

1• 1.6 A, 97% Efficient Step-Down Converter for

System Voltage (VDCDC1)

– 3.3 V, 2.8 V, or Adjustable

• 0.8 A, up to 95% Efficient Step-Down Converter

for Memory Voltage (VDCDC2)

– 1.8 V, 2.5 V, or Adjustable

• 0.8 A, 90% Efficient Step-Down Converter for

Processor Core (VDCDC3)

• Adjustable Output Voltage on VDCDC3

• 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

2 Applications

• Cellular, Smart Phones

• GPS

• Digital Still Cameras

• Split Supply DSP and μP Solutions

• Samsung ARM-Based Processors

3 Description

The TPS650250 device is an integrated power

management IC for applications requiring multiple

power rails. The TPS650250 provides 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, controlled by the MODE pin, enter a lowpower

mode at light load for maximum efficiency or

operate in forced fixed frequency PWM mode.

The TPS650250 device integrates two generalpurpose

200-mA LDO voltage regulators. Both LDOs

operate with an input voltage range from 1.5 V to 6.5

V, allowing them to be supplied from one of the stepdown

converters. The output voltage of all rails can

be set with an external resistor divider and enabled

with an input pin. Additionally, a 30-mA LDO is

typically used to provide power to an always-on rail.