TPS51367 Datasheet, PDF (1/32 Pages) Texas Instruments – 22-V Input, 12-A Integrated FET Converter With Ultra-Low Quiescent

TPS51367
www.ti.com
SLUSBB7A – MARCH 2013 – REVISED JUNE 2013
22-V Input, 12-A Integrated FET Converter
With Ultra-Low Quiescent ( ULQ™)
Check for Samples: TPS51367
FEATURES
1
•2 Input Voltage Range: 3 V to 22 V
• Output Voltage Range: 0.6 V to 2 V
• 12-A Integrated FET Converter
• Fewest External Components
• ULQ™-100 Mode of Operation to Enable Long
Battery Life During System Standby
• Soft-Start Time Programmable by External
Capacitor
• Switching Frequency: 400 kHz and 800 kHz
• D-CAP2™ Architecture to Enable POSCAP and
All MLCC Output Capacitor Usage
• Integrated and Temperature Compensated
Low-Side On-Resistance Sensing for Accurate
OCL Protection
• Powergood Output
OCL, OVP, UVP and UVLO Protections
• Thermal Shutdown (non-latch)
• Output Discharge Function
• Integrated Boost MOSFET Switch
• 28-Pin, 3.5-mm × 4.5-mm, RVE, QFN Package
with 0.4-mm Pitch and 1-mm Height
APPLICATIONS
• Notebook Computers (VCCIO)
• Memory Rails (DDR VDDQ)
DESCRIPTION
The TPS51367 is a high-voltage input, synchronous
converter with integrated FET, based on DCAP-2™
control topology, which enables fast transient
response and supports both POSCAP and all MLCC
output capacitors. TI proprietary FET technology
combined with TI leading-edge package technology
provides the highest density solution for single-output
power rail such as VCCIO and VDDQ for DDR
notebook memory, or any point-of-load (POL) in wide
application.
The key feature of the TPS51367 is its ULQ™ Mode
to enable low-bias current (100 µA in low power
mode, enabled by LP#). This feature is extremely
beneficial for long battery life in system standby
mode.
The feature set includes switching frequency of 800
kHz. Programmable soft-start time with an external
capacitor. auto skip, pre-bias startup, integrated
bootstrap switch, power good, enable and a full suite
of fault protection schemes, including OCL, UVP,
OVP, 5-V UVLO and thermal shutdown.
It is packaged in 3.5 mm × 4.5 mm, 0.4-mm pitch, 28-
pin QFN (RVE), and specified from -10°C to 85°C.
SIMPLIFIED APPLICATION
VSNS
GSNS
23 22 21
GSNS VSNS SLEW
24 REFIN2
20 19 18 17 16 15
TRIP GND V5 VIN VIN VIN
PGND 14
25 REFIN
PGND 13
26 VREF
TPS51367
PGND 12
27 NU
PGND 11
28 EN
PGOOD LP# MODE NC BST
1
2345
PGND 10
SW SW SW SW
6789
VIN
7.4 V
to
20 V
EN
PGOOD
VOUT
1.05 V
LP#
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
ULQ, DCAP-2 are trademarks of Texas Instruments.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2013, Texas Instruments Incorporated