TPS65022_16 Datasheet, PDF (1/47 Pages) Texas Instruments – Power Management IC for Li-Ion Powered Systems

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TPS65022
SLVS667B – JULY 2006 – REVISED JANUARY 2016
TPS65022 Power Management IC for Li-Ion Powered Systems
1 Features
•1 1.2-A, 97% Efficient Step-Down Converter for
System Voltage (VDCDC1)
• 1-A, Up to 95% Efficient Step-Down Converter for
Memory Voltage (VDCDC2)
• 900-mA, 90% Efficient Step-Down Converter for
Processor Core (VDCDC3)
• 30-mA LDO and 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
• I²C Compatible Serial Interface
• 85-μA Quiescent Current
• Low Ripple PFM Mode
• Thermal Shutdown Protection
2 Applications
• PDA
• Cellular and Smart Phones
• Internet Audio Players
• Digital Still Cameras
• Digital Radio Players
• Split Supply TMS320™ DSP Family and μP
Solutions:
OMAP™1610, OMAP1710, OMAP330, XScale
Bulverde, Samsung ARM-Based Processors, and
so forth
• Intel^® PXA270, and so forth
3 Description
The TPS65022 is an integrated Power Management
IC for applications powered by one Li-Ion or Li-
Polymer cell, and which require multiple power rails.
The TPS65022 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 enter a low-power
mode at light load for maximum efficiency across the
widest possible range of load currents. The
TPS65022 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 between 1.5 V and 6.5 V,
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, enabling,
and setting the LDO output voltages. The interface is
compatible with the Fast/Standard mode I²C
specification, allowing transfers at up to 400 kHz. The
TPS65022 is available in a 40-pin (RHA) VQFN
package, and operates over a free-air temperature of
–40°C to 85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS65022
VQFN (40)
6.00 mm × 6.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
TPS6502x
Example SoC
Monitored
Voltage1
R1
R2
Monitored
Voltage2
R3
R4
PWRFAIL
+
±
LOWBATT
+
±
DCDC1
DCDC2
2.2 µH
22 µF
2.2 µH
22 µF
LDO1
BACKUP
RTC AND
VBACKUP
RESPWRON
2.2 µF
DCDC1_EN
DCDC2_EN
DCDC3_EN
LDO_EN
DEFDCDC1
DEFDCDC2
DEFDCDC3
Enables
and
Vout
Select
DCDC3
LDO1
2.2 µF
2.2 µH
22 µF
2.2 µF
CORE
1.8-V IO
Domain
3.3-V IO
Domain
System Reset
Memory
Memory
Peripherals
System Platform
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.