TAM-3517 HARDWARE MANUAL rev B
July 3 2012, TechNexion
13
5.2
PMIC: TPS-65023
5.2.1
TPS-65023 – Introduction
The TPS65023 is an integrated Power Management IC for applications powered by one Li-Ion
or Li-Polymer cell, and which require multiple power rails. The TPS65023 provides three highly
efficient, step-down converters targeted at providing the core voltage, peripheral, I/O and
memory rails in a processor based system. The core converter allows for on-the-fly voltage
changes via serial interface, allowing the system to implement dynamic power savings. 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 TPS65023 also integrates two general-purpose 200
mA LDO voltage regulators, which are enabled with an external input pin.
5.2.2
TPS-65023 Features
1.7 A, 90% Efficient Step-Down Converter for Processor Core (VDCDC1)
1.2 A, Up to 95% Efficient Step-Down Converter for System Voltage (VDCDC2)
1.0 A, 92% Efficient Step-Down Converter for Memory Voltage (VDCDC3)
30 mA LDO/Switch for Real Time Clock (VRTC)
2 × 200 mA General-Purpose LDO
Dynamic Voltage Management for Processor Core
Preselectable LDO Voltage Using Two Digital Input Pins
Externally Adjustable Reset Delay Time
Battery Backup Functionality
Separate Enable Pins for Inductive Converters
I
2
C Compatible Serial Interface
I
2
C Setup and Hold Timing:
o
TPS65023: 300ns
o
TPS65023B: 100ns
I
2
C Setup and Hold Timing:
o
SN0901059: 300ns
o
SN0901059B: 100ns
85-µA Quiescent Current
Low Ripple PFM Mode
Thermal Shutdown Protection
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