Features: · 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/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-mA Quiescent Current
· Low Ripple PFM Mode
· Thermal Shutdown Protection
· 40-Pin 6 mm x 6 mm QFN PackageApplication· PDA
· Cellular/Smart Phone
· Internet Audio Player
· Digital Still Camera
· Digital Radio Player
· Split Supply TMS320™ DSP Family and mP Solutions: OMAP™1610, OMAP1710, OMAP330, XScale Bulverde, Samsung ARM-Based Processors,etc.
· Intel® PXA270, etc.
Pinout
Specifications
| |
VALUE |
UNIT |
| VI Input voltage range on all pins except AGND and PGND pins with respect to AGND |
0.3 to 7 |
V |
| Current at VINDCDC1, L1, PGND1, VINDCDC2, L2, PGND2, VINDCDC3, L3, PGND3 |
2000 |
mA |
| Peak Current at all other pins |
1000 |
mA |
| Continuous total power dissipation |
See Dissipation Rating Table |
| TA Operating free-air temperature |
40 to 85 |
°C |
| TJ Maximum junction temperature |
125 |
°C |
| Tstg Storage temperature |
65 to 150 |
°C |
DescriptionThe TPS65021 is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell, and which require multiple power rails. The TPS65021 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 TPS65021 also integrates twon 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 dis/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 TPS65021 is available in a 40-pin (RHA) QFN package, and operates over a free-air temperature of -40°C to 85°C.
TPS65021 Data Sheet
