TPS54327_15 Datasheet, PDF (1/29 Pages) Texas Instruments – 3-A OUTPUT SINGLE SYNCHRONOUS STEP DOWN SWITCHER WITH INTEGRATED FET

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TPS54327
SLVSAG1C – DECEMBER 2010 – REVISED DECEMBER 2015
TPS54327 3-A Output Single Synchronous Step-Down Switcher
With Integrated FET
1 Features
•1 D-CAP2™ Mode Enables Fast Transient
Response
• Low-Output Ripple and Allows Ceramic Output
Capacitor
• Wide V_IN Input Voltage Range: 4.5 V to 18 V
• Output Voltage Range: 0.76 V to 7 V
• Highly Efficient Integrated FETs Optimized
for Lower Duty Cycle Applications
– 100 mΩ (High-Side) and 70 mΩ (Low-Side)
• High Efficiency, Less Than 10 μA at shutdown
• High Initial Bandgap Reference Accuracy
• Adjustable Soft Start
• Prebiased Soft Start
• 700-kHz Switching Frequency (f_SW)
• Cycle-By-Cycle Overcurrent Limit
2 Applications
• Wide Range of Applications for Low Voltage
System
– Digital TV Power Supply
– High Definition Blu-ray Disc™ Players
– Networking Home Terminal
– Digital Set Top Box (STB)
3 Description
The TPS54327 device is an adaptive on-time D-
CAP2™ mode synchronous buck converter.
TheTPS54327 enables system designers to complete
the suite of various end equipment’s power bus
regulators with a cost effective, low component count,
low standby current solution. The main control loop
for the TPS54327 uses the D-CAP2 mode control
which provides a fast transient response with no
external compensation components. The TPS54327
also has a proprietary circuit that enables the device
to adopt to both low equivalent series resistance
(ESR) output capacitors, such as POSCAP or SP-
CAP, and ultra-low ESR ceramic capacitors. The
device operates from 4.5-V to 18-V VIN input. The
output voltage can be programmed between 0.76 V
and 7 V. The device also features an adjustable soft
start time. The TPS54327 is available in the 8-pin
DDA package and 10-pin DRC, and is designed to
operate from –40°C to 85°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS54327
HSOP (8)
VSON (10)
4.89 mm × 3.90 mm
3.00 mm × 3.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
TPS54327 Transient Response
Vout (50 mV/div)
Iout (2 A/div)
100 ms/div
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.