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)
` 800 mA, 90% Efficient Step-Down Converter for Processor Core (VDCDC3)
` 20 mA LDO/Switch for Real Time Clock (VRTC)
` 2*50 mA LDO for SRAM and PLL
` Dynamic Voltage Management for Processor Core
` Externally Adjustable Reset Delay Time
` Battery Backup Functionality
` Separate Enable Pins for Inductive Converters
` I2C™ Compatible Serial Interface
` 85-A Quiescent Current
` Low Ripple PFM Mode
` Thermal Shutdown Protection
` Push Button I/O
Application` PDA
` Cellular/Smart Phone
` Internet Audio Player
` Digital Still Camera
` Digital Radio Player
` Split Supply DSP and P Solutions: OMAP1610, OMAP1710, OMAP330
` 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 |
|
| TJ Maximum junction temperature |
125 |
|
| Tstg Storage temperature |
65 to 150 |
|
| Lead temperature 1,6 mm (1/16-inch)from case for 10 seconds |
260 |
|
(1) Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliabilityDescriptionThe TPS65020 is an integrated Power Management IC for applications powered by one Li-Ion or Li-Polymer cell, and which require multiple power rails. The TPS65020 provides three highly efficient, step-down converters targeted at providing the core voltage, peripheral, I/O and memory rails in a pro cessor 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 TPS65020 also integrates two 50 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-dow converters or directly from the main battery. The two 50-mA LDO voltage regulators are intended for use with the SDRAM and PLL power supply in a Intel PXA270 based system. The serial interface of TPS65020 is used for dynamic voltage scaling of the core voltage, 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 TPS65020 incorporates a push button debounced input and latched output for implementation of a push-button turn-on feature, typically required in smartphones or wireless PDAs.
TPS65020 Data Sheet
