LTM4625Y(RevC) Ver la hoja de datos (PDF) - Analog Devices
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LTM4625Y Datasheet PDF : 26 Pages
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LTM4625
20VIN, 5A Step-Down DC/DC
µModule Regulator
FEATURES
nn Complete Solution in <1cm2 (Single-Sided PCB) or
0.5cm2 (Dual-Sided PCB)
nn Wide Input Voltage Range: 4V to 20V
nn Input Voltage Down to 2.375V with External Bias
nn 0.6V to 5.5V Output Voltage
nn 5A DC Output Current
nn ±1.5% Maximum Total DC Output Voltage Error
Over Line, Load and Temperature
nn Current Mode Control, Fast Transient Response
nn External Frequency Synchronization
nn Multiphase Parallel Current Sharing with
Multiple LTM4625s
nn Output Voltage Tracking
nn Selectable Discontinuous Mode
nn Power Good Indicator
nn Overvoltage, Overcurrent and Overtemperature
Protection
nn 6.25mm × 6.25mm × 5.01mm BGA Package
APPLICATIONS
nn Telecom, Datacom, Networking and
Industrial Equipment
nn Medical Diagnostic Equipment
nn Data Storage Rack Units and Cards
nn Test and Debug Systems
DESCRIPTION
The LTM®4625 is a complete 5A step-down switching
mode µModule (micromodule) regulator in a tiny 6.25mm
× 6.25mm × 5.01mm BGA package. Included in the pack-
age are the switching controller, power FETs, inductor and
support components. Operating over an input voltage range
of 4V to 20V or 2.375V to 20V with an external bias supply,
the LTM4625 supports an output voltage range of 0.6V to
5.5V, set by a single external resistor. Its high efficiency
design delivers up to 5A continuous output current. Only
bulk input and output capacitors are needed.
The LTM4625 supports selectable discontinuous mode
operation and output voltage tracking for supply rail se-
quencing. Its high switching frequency and current mode
control enable a very fast transient response to line and
load changes without sacrificing stability.
Fault protection features include overvoltage, overcurrent
and overtemperature protection.
The LTM4625 is available with SnPb or RoHS compliant
terminal finish.
All registered trademarks and trademarks are the property of their respective owners.
TYPICAL APPLICATION
5A, 1.5V Output DC/DC µModule® Step-Down Regulator
VIN
4V TO 20V
10µF
0.1µF
CLKIN PHMODE CLKOUT
VIN
VOUT
SVIN
RUN LTM4625
INTVCC
PGOOD
MODE
COMP
TRACK/SS
FB
FREQ
GND SGND
VOUT
1.5V
47µF 5A
40.2k
4625 TA01a
1.5V Output Efficiency vs Load Current
95
90
85
80
75
70
65
VIN = 5V
VIN = 12V
60
0
1
2
3
4
5
LOAD CURRENT (A)
4625 TA01b
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For more information www.analog.com
Rev C
1
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