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TPS53353DQPR
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TPS53353SLUSAK2C –AUGUST 2011–REVISED FEBRUARY 2016
TPS53353 High-Efficiency 20-A Synchronous Buck SWIFT™ Converter With Eco-mode™ Features Conversion Input Voltage Range: 1.5Vto15V VDD Input Voltage Range: 4.5Vto25V 92% Efficiency From12Vto 1.5Vat20A Output Voltage Range: 0.6Vto 5.5V 5-V LDO Output Supports Single-Rail Input Integrated Power MOSFETs With 20Aof
Continuous Output Current Auto-Skip Eco-mode™ for Light-Load Efficiency < 10-μA Shutdown Current D-CAP™ Mode With Fast Transient Response Selectable Switching Frequency From 250 kHzto MHz With External Resistor Selectable Auto-Skipor PWM-Only Operation Built-in 1% 0.6-V Reference. 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable
Internal Voltage Servo Soft-Start Integrated Boost Switch Precharged Start-up Capability Adjustable Overcurrent Limit With Thermal
Compensation Overvoltage, Undervoltage, UVLO and
Overtemperature Protection SupportsAll Ceramic Output Capacitors Open-Drain Power-Good Indication Incorporates NexFET™ Power Block Technology 22-Pin QFN Package With PowerPAD™ For SWIFT™ Power Products Documentation,
see http://www.ti.com/swift
Applications Server/Storage Workstations and Desktops Telecommunications Infrastructure
DescriptionTPS53353isa D-CAP™ mode, 20-A synchronous
switcher with integrated MOSFETs.Itis designed for
ease of use, low external component count, and
space-conscious power systems.
This device features 5.5-mΩ/ 2.2-mΩ integrated
MOSFETs, accurate 1%, 0.6-V reference, and
integrated boost switch.A sample of competitive
features include:a conversion input voltage range
from 1.5Vto 15 V, very low external component
count, D-CAP™ mode control for super fast transient,
auto-skip mode operation, internal soft-start control,
selectable frequency, andno need for compensation.
The conversion input voltage ranges from 1.5Vto15 the supply voltage rangeis from 4.5VtoV, and
the output voltage rangeis from 0.6Vto 5.5V.
The deviceis availablein 5-mm× 6-mm, 22-pin QFN
package andis specified from –40°Cto 85°C.
Device Information(1)(1) Forall available packages, see the orderableat
the endofthe data sheet.
Simplified Application
