TPS65023

6 通道电源管理 IC PMIC，具有 3 个 DC/DC、3 个 LDO 以及 I2C 接口和 DVS

The x device is an integrated power management IC for applications powered by one Li-Ion or Li-Polymer cell, which require multiple power rails. The TPS65023x 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 through 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 TPS65023x also integrates two general-purpose 200-mA LDO voltage regulators, which are enabled with an external input pin. Each LDO operates with an input voltage range from 1.5 V to 6.5 V, thus allowing them to be supplied from one of the step-down converters or directly from the battery. The default output voltage of the LDOs can be digitally set to 4 different voltage combinations using the DEFLDO1 and DEFLDO2 pins. The serial interface can be used for dynamic voltage scaling, masking interrupts, or for disabling or enabling and setting the LDO output voltages. The interface is compatible with both the fast and standard mode I2C specifications, allowing transfers at up to 400 kHz. The TPS65023x is available in a 40-pin WQFN package, and operates over a free-air temperature of –40°C to 85°C.

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1.7-A, 90% Efficient Step-Down Converter for

Processor Core VDCDC1

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1.2-A, Up to 95% Efficient Step-Down Converter

for System Voltage VDCDC2

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1.0-A, 92% Efficient Step-Down Converter for

Memory Voltage VDCDC3

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30-mA LDO and Switch for Real Time Clock

VRTC

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2 × 200-mA General-Purpose LDO

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Dynamic Voltage Management for Processor Core

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Preselectable LDO Voltage Using Two Digital

Input Pins

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Externally Adjustable Reset Delay Time

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Battery Backup Functionality

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Separate Enable Pins for Inductive Converters

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I2C-Compatible Serial Interface

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I2C™ Setup and Hold Timing:

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TPS65023: 300 ns

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TPS65023B: 100 ns

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85-µA Quiescent Current

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Low Ripple PFM Mode

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Thermal Shutdown Protection

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40-Pin, 5-mm × 5-mm WQFN Package