TPS6521855
SLDS268 – MAY 2021
TPS6521855 Power Management IC (PMIC) for AM64x Arm®Cortex®-A53 Processors
– DCDC3, DCDC4 ±5% Tolerance
– LDO1 ±5% Tolerance
1 Features
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Three Adjustable Step-Down Converters With
Integrated Switching FETs (DCDC1, DCDC2, and
DCDC3):
– DCDC1: 1.1-V Default, up to 1.8 A
– DCDC3: 1.2 1.8-V Default, up to 1.8 A
– VIN Range From 2.7 V to 5.5 V
– Adjustable Output Voltage Range 0.85 V to
1.675 V (DCDC1 and DCDC2)
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Protection, Diagnostics, and Control:
– Undervoltage Lockout (UVLO)
– Always-on Push-Button Monitor
– Overtemperature Warning and Shutdown
– Separate Power-Good Output for Backup and
Main Supplies
– I2C Interface (Address 0x24) (See Timing
Requirements for I2C Operation at 400 kHz)
– Adjustable Output Voltage Range 0.9 V to 3.4 V
(DCDC3)
2 Applications
– Power Save Mode at Light Load Current
– 100% Duty Cycle for Lowest Dropout
– Active Output-Discharge When Disabled
One Adjustable Buck-Boost Converter With
Integrated Switching FETs (DCDC4):
– DCDC4: 1.8-V Default, up to 1.6 A
– VIN Range from 2.7 V to 5.5 V
– Adjustable Output Voltage Range from 1.175 V
to 3.4 V
– Active Output-Discharge When Disabled
Two Low-Quiescent Current, High Efficiency Step-
Down Converters for Battery Backup Domain
(DCDC5, DCDC6)
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Grid Infrastructure
Appliances
Human-Machine Interface (HMI)
Industrial Automation
Electronic Point of Sale (ePOS)
Test and Measurement
Personal Navigation
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Industrial Communications
Connected Industrial Drives
3 Description
The TPS6521855 is
a
single chip, power-
management IC (PMIC) specifically designed to
support the AM64x line of processors in both portable
(Li-Ion battery) and nonportable (5-V adapter)
applications. The device is characterized across a –
40°C to +105°C temperature range, making it suitable
for various industrial applications.
– DCDC5: 1-V Output
– DCDC6: 1.8-V Output
– VIN Range from 2.2 V to 5.5 V
– Supplied From System Power or Coin-Cell
Backup Battery
Device Information(1)
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Adjustable General-Purpose LDO (LDO1)
– LDO1: 3.3-V Default up to 400 mA
– VIN Range from 1.8 V to 5.5 V
– Adjustable Output Voltage Range from 0.9 V to
3.4 V
PART NUMBER
TPS6521855
TPS6521855
PACKAGE
VQFN (48)
HTQFP (48)
BODY SIZE (NOM)
6.00 mm × 6.00 mm
7.00 mm × 7.00 mm
– Active Output-Discharge When Disabled
Low-Voltage Load Switch (LS1) With 350-mA
Current Limit
– VIN Range From 1.2 V to 3.6 V
– 110-mΩ (Max) Switch Impedance at 1.35 V
5-V Load Switch (LS2) With 100-mA or 500-mA
Selectable Current Limit
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
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– VIN Range From to 5.5 V
– 500-mΩ (Max) Switch Impedance at 5 V
High-Voltage Load Switch (LS3) With 100-mA or
500-mA Selectable Current Limit
– VIN Range From 1.8 V to 10 V
– 500-mΩ (Max) Switch Impedance
Supervisor With Built-in Supervisor Function
Monitors
– DCDC1, DCDC2 ±4% Tolerance
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.