TPS53219A_15 Datasheet, PDF (1/35 Pages) Texas Instruments – Single Synchronous Step-Down Controller

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TPS53219A
SLUSAU4A – DECEMBER 2011 – REVISED DECEMBER 2015
TPS53219A Wide Input Voltage, Eco-Mode™, Single Synchronous Step-Down Controller
1 Features
•1 Conversion Input Voltage Range: 3 V to 28 V
• VDD Input Voltage Range: 4.5 V to 25 V
• Output Voltage Range: 0.6 V to 5.5 V
• Wide Output Load Range: 0 A to > 20 A
• Built-In 0.6-V (±0.8%) Reference
• Built-In LDO Linear Voltage Regulator
• Auto-Skip Eco-Mode™ for Light-Load Efficiency
• D-CAP™ Mode with 100-ns Load-Step Response
• Adaptive ON-Time Control Architecture with 8
Selectable Frequency Settings
• 4700ppm/°C R_DS(on) Current Sensing
• 0.7-ms, 1.4-ms, 2.8-ms and 5.6-ms Selectable
Internal Voltage Servo Soft-Start
• Pre-Charged Start-Up Capability
• Built-In Output Discharge
• Open-Drain Power Good Output
• Integrated Boost Switch
• Built-In OVP/UVP/OCP
• Thermal Shutdown (Non-Latch)
• 3-mm × 3-mm QFN, 16-Pin (RGT) Package
2 Applications
• Storage Computers
• Server Computers
• Multi-Function Printers
• Embedded Computing
3 Description
The TPS53219A device is a small-sized single buck
controller with adaptive ON-time D-CAP mode
control. The device is suitable for low output voltage,
high current, PC system power rail and similar point-
of-load (POL) power supplies in digital consumer
products. The small package and minimal pin-count
save space on the PCB, while the dedicated EN pin
and pre-set frequency selections simplify the power
supply design. The skip-mode at light load conditions,
strong gate drivers and low-side FET R_DS(on) current
sensing supports low-loss and high efficiency, over a
broad load range. The conversion input voltage (high-
side FET drain voltage) range is between 4.5 V and
25 V, and the output voltage range is between 0.6 V
and 5.5 V. The TPS53219A is available in a 16-pin,
QFN package specified from –40°C to 85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS53219A
QFN (16)
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
VREG
16 15 14 13
PGOOD NC VBST DRVH
1 TRIP
SW 12
DRVL 11
EN
2 EN
TPS53219A VDRV 10
3 VFB
4 RF
VREG 9
Pad MODE VDD
GND PGND
56
7
8
VIN
CSD86350
SW
VIN
SW
TG
SW
TGR
BG
PGND
V_OUT
V_IN
VDD
UDG-11273
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.