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LTC7150S-4 Datasheet

20A Synchronous Step-Down Regulator

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FEATURES
nn AEC-Q100 Qualified for Automotive Applications
nn Silent Switcher®2 Architecture for Low EMI
nn VIN Range: 3.1V to 20V
nn VOUT Range: 0.6V to 5.5V
nn Differential VOUT Remote Sense
nn Adjustable Frequency: 400kHz to 3MHz
nn PolyPhase® Operation: Up to 12 Phases
nn Output Tracking and Soft-Start
nn Reference Accuracy: 0.6V ±1% Over Temperature
nn Current Mode Operation for Excellent Line and Load
Transient Response
nn Accurate 1.2V Run Pin Threshold
nn Supports Forced Continuous/Discontinuous Modes
nn 42-Lead 6mm × 5mm × 1.3mm BGA Package
APPLICATIONS
nn Server Power Applications
nn Distributed Power Systems
nn Point of Load Supply for ASIC, FPGA, DSP, µP, etc.
All registered trademarks and trademarks are the property of their respective owners.
LTC7150S/LTC7150S-4
20V, 20A Synchronous
Step-Down Regulator
DESCRIPTION
The LTC®7150S is a high efficiency monolithic synchronous
buck regulator capable of delivering 20A to the load. It uses
a phase lockable controlled on-time constant frequency, cur-
rent mode architecture. PolyPhase operation allows multiple
LTC7150S regulators to run out-of-phase, which reduces
the amount of input and output capacitors required. The
operating supply voltage range is from 3.1V to 20V.
The operating frequency is programmable from 400kHz to
3MHz with an external resistor. The high frequency capability
allows the use of physically smaller inductor and capaci-
tor sizes. For switching noise sensitive applications, the
LTC7150S can be externally synchronized from 400kHz
to 3MHz. The PHMODE pin allows the user control of the
phase of the outgoing clock signal. The unique constant
frequency/controlled on-time architecture is ideal for high
step-down ratio applications that operate at high frequencies
while demanding fast transient response. The LTC7150S
uses second generation Silent Switcher technology includ-
ing integrated bypass capacitors to deliver a highly efficient
solution at high frequencies with excellent EMI performance.
PART NUMBER
LTC7150S
LTC7150S-4
TJMAX
125°C
150°C
TYPICAL APPLICATION
VIN
3.1V TO 20V
12VIN to 1.2VOUT Application
22µF
×2
4.7µF
RUN
PVIN
SVIN
LTC7150S
SW
FB
PHMODE
TRACK/SS
CLKOUT
INTVCC
RT
VOUT–
PGOOD
MODE/SYNC
SGND
ITH
0.25µH
10k
10k
162k
10k
1nF
22pF
100µF +
×2
VOUT
1.2V/20A
330µF
7150S TA01a
Document Feedback
For more information www.analog.com
Efficiency and Power Loss
100
SVIN = 5V
95
12
10
90 8
85 6
80 4
75 2
70 0
0 4 8 12 16 20
IOUT (A)
7150S TA01b
Rev. B
1


Analog Devices Semiconductor Electronic Components Datasheet

LTC7150S-4 Datasheet

20A Synchronous Step-Down Regulator

No Preview Available !

LTC7150S/LTC7150S-4
ABSOLUTE MAXIMUM RATINGS
(Note 1)
PVIN, SVIN.................................................. –0.3V to 22V
RUN Voltage............................................. –0.3V to SVIN
MODE/SYNC, TRACK/SS Voltage.......... –0.3V to INTVCC
ITH, RT, PGOOD Voltage............................ –0.3V to 3.6V
PHMODE, CLK Voltage............................... –0.3V to 3.6V
VOUT– Voltage............................................ –0.3V to 0.3V
FB Voltage.................................................. –0.3V to 3.6V
Operating Junction Temperature Range
LTC7150SE......................................... –40°C to 125°C
LTC7150SI.......................................... –40°C to 125°C
LTC7150S-4J...................................... –40°C to 150°C
Storage Temperature Range................... –65°C to 150°C
Maximum Internal Temperature............................. 125°C
Peak Reflow Solder Body Temperature.................. 260°C
PIN CONFIGURATION
PHMODE
TOP VIEW
123456
PGOOD RT ITH FB VOUT–
CLKOUT RUN M/S TRACK/SS SGND INTVCC
SVIN PVIN SW SW PVIN PVIN
PVIN PVIN SW SW PVIN PVIN
PGND PGND SW SW PGND PGND
PGND PGND SW SW PGND PGND
PGND PGND SW SW PGND PGND
A
B
C
D
E
F
G
BGA PACKAGE
42-LEAD (6mm × 5mm × 1.30mm)
θJA = 21°C/W
ORDER INFORMATION
PART NUMBER
PAD OR BALL FINISH
PART MARKING*
DEVICE
FINISH CODE
PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(SEE NOTE 2)
LTC7150SEY#PBF
LTC7150SIY#PBF
SAC305 (RoHS)
7150S
e1
BGA
3 –40°C to 125°C
LTC7150SJY-4#PBF
7150S4
–40°C to 150°C
AUTOMOTIVE PRODUCTS**
LTC7150SJY-4#WPBF
SAC305 (RoHS)
7150S4
e1
BGA
3 –40°C to 150°C
• Contact the factory for parts specified with wider operating temperature • Recommended LGA and BGA PCB Assembly and Manufacturing
ranges. *Pad or ball finish code is per IPC/JEDEC J-STD-609.
Procedures
• This product is not recommended for second side reflow. see BGA
Assembly and Manufacturing Procedures)
LGA and BGA Package and Tray Drawings
• This product is moisture sensitive (see BGA Assembly and Manufacturing
Procedures).
**Versions of this part are available with controlled manufacturing to support the quality and reliability requirements of automotive applications. These
models are designated with a #W suffix. Only the automotive grade products shown are available for use in automotive applications. Contact your
local Analog Devices account representative for specific product ordering information and to obtain the specific Automotive Reliability reports for
these models.
Rev. B
2 For more information www.analog.com


Part Number LTC7150S-4
Description 20A Synchronous Step-Down Regulator
Maker Analog Devices
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