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.