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TPS659121, TPS659122
SWCS071B –AUGUST 2012–REVISED APRIL 2015
TPS65912x PMU for Processor Power
1 Device Information
1.1 Features
1
– Internal Dimming Using I
2
C
• Four Step-Down Converters:
– Multiplexed With GPIOs
– V
IN
Range From 2.7 V to 5.5 V
– Up to 20 mA per Current Sink
– Power Save Mode at Light Load Current
• Thermal Monitoring
– Output Voltage Accuracy in PWM Mode ±2%
– High Temperature Warning
– Typical 26-μA Quiescent Current per Converter
– Thermal Shutdown
– Dynamic Voltage Scaling
• Bypass Switch
– 100% Duty Cycle for Lowest Dropout
– Used With DCDC4 in Applications Powering an
• Ten LDOs:
RF-PA
– 8 General-Purpose LDOs
– For Example, as Supply Switch for SD Cards
– Output Voltage Range From 0.8 V to 3.3 V
• Interface
– 2 Low-Noise RF-LDOs
– I
2
C Interface
– Output Voltage Range From 1.6 V to 3.3 V
– Power I
2
C Interface for Dynamic Voltage
– 32-μA Quiescent Current
Scaling
– Preregulation Support by Separate Power
– SPI
Inputs
• 32-kHz RC Oscillator
– ECO Mode
• Undervoltage Lockout and Battery Fault
– V
IN
Range of LDOs Respective to the Following
Comparator
Voltage Ranges:
• Long Button-Press Detection
• 1.8 V to 3.6 V
• Flexible Power-Up and Power-Down Sequencing
• 3.0 V to 5.5 V
• 3.6-mm × 3.6-mm WCSP Package With 0.4-mm
• Three LED Outputs:
Pitch
1.2 Applications
• Data Cards • Industrial Applications
• Smart Phones • LTE Modem
• Wireless Routers and Switches • GPS
• Tablets
1.3 Description
The TPS65912x device provides four configurable step-down converters with up to 2.5-A output current
for memory, processor core, I/O, or preregulation of LDOs. The device also contains ten LDO regulators
for external use. These LDOs can be supplied from either a battery or a preregulated supply. Power-up or
power-down controller is configurable and can support any power-up or power-down sequences
(OTP-based). The TPS65912x device integrates a 32-kHz RC oscillator to sequence all resources during
power up or power down. All LDOs and DC-DC converters can be controlled by I
2
C-SPI interface or basic
ENABLE balls. In addition, an independent automatic voltage-scaling interface allows for transitioning
DC-DC to a different voltage by I
2
C or basic Roof/Floor Control. Three RGB LEDs with an advanced
dimming feature are integrated inside the device. GPIO functionality is multiplexed with LED/ENABLE/SPI
when not used. Each GPIO can be configured as part of the power-up sequence to control external
resources. One SLEEP pin enables power mode control between active mode and preprogrammed sleep
mode for power optimization. For system control, the TPS65912x device has one comparator for system
state management. The TPS65912x device comes in a 9-pin × 9-pin WCSP package (3.6 mm × 3.6 mm)
with a 0.4-mm pitch.
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.
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