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TPS650231RSBT-TPS650231YFFT
Power Management IC For Li-Ion Powered Systems
TPS6502x
DCDC1
DCDC2
DCDC3
LDO1
1.8-V IO
Domain
Memory
22 μF
22 μF
2.2 μH
2.2 μH
2.2 μH
2.2 μF
2.2 μF
BACKUP
Enables
and
Monitored
Voltage1
Monitored
Voltage2
RESPWRON
PWRFAIL
LOWBATT
RTC AND
VBACKUP
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Features 2 Applications 1.7-A, 90% Efficient Step-Down Converter for • Smart Phones
Processor Core (VDCDC1) • Netbooks 1.2-A, Upto 95% Efficient Step-Down Converter • Portable
for System Voltage (VDCDC2)
Description• 0.8-A, 92% Efficient Step-Down Converter for
Memory Voltage (VDCDC3) The TPS650231
management IC for applications powered by one• 30-mA LDO and Switchfor Real-Time Clock Li-Ionor Li-Polymer cell, and which requires multiple(VRTC) power rails. The TPS650231 provides three highly• 2× 200-mA General-Purpose LDO efficient step-down• Dynamic Voltage Managementfor Processor Core the core voltage, processor-based• Preselectable LDO Voltage Using Two Digital
for on-the-flyInput Pins interface, allowing• Externally Adjustable Reset Delay Time power savings.• Battery Backup Functionality
Device Information(1)• Separate Enable Pinsfor Inductive Converters•I2 C™-Compatible Serial Interface• 85-μA Quiescent Current• Low-Ripple PFM Mode• Thermal Shutdown Protection• Availablein 40-Pin, 5-mm× 5-mm VQFN (RSB)or
49-Ball, 3-mm× 3-mm DSBGA (YFF) Package
Simplified Schematic
