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LTM4661 Scheda tecnica(PDF) 1 Page - Linear Technology

Il numero della parte LTM4661
Spiegazioni elettronici  15V, 4A Step-Up 關Module Regulator
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

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LTM4661
1
4661f
For more information www.linear.com/LTM4661
TYPICAL APPLICATION
FEATURES
DESCRIPTION
15V, 4A Step-Up
µModule Regulator
The LTM®4661 is a synchronous step-up switching mode
µModule®(powermodule)regulatorina6.25mm×6.25mm
× 2.42mm BGA package. Included in the package are the
switching controller, power FETs, inductor and all support
components. Operating over an input voltage of 1.8V to
5.5V, down to 0.7V after start-up, the LTM4661 regulates
an output voltage of 2.5V to 15V set by an external resistor.
It provides up to 4A switch current. Only bulk input and
output capacitors are needed.
The LTM4661 1MHz switching frequency and dual phase
singleoutputarchitectureenablefasttransientresponseto
line and load changes and a significant reduction of output
ripple voltage. It supports frequency synchronization,
PolyPhase®operationandselectableBurstModeoperation.
The LTM4661 features a true output disconnect during
shutdown and inrush current limit at start-up. It also has
short-circuit,overvoltageandovertemperatureprotection.
The LTM4661 is Pb-free and RoHS compliant.
5V/2A DC/DC Step-Up µModule Regulator
Efficiency vs Output Current at 3.3V Input
APPLICATIONS
n
Complete Solution in <1cm2 (Single-Sided PCB) or
0.5cm2 (Dual-Sided PCB)
n
Input Voltage Range: 1.8V to 5.5V, Down to 0.7V
After Start-Up
n
Output Voltage Range: 2.5V to 15V
n
4A Switch Current
n
Dual Phase Operation
n
±3% Maximum Total DC Output Voltage Regulation
Over Load, Line and Temperature
n
Output Disconnect in Shut Down
n
Inrush Current Limit
n
External Frequency Synchronization
n
Selectable Burst Mode® Operation
n
Output Overvoltage and Overtemperature Protection
n
6.25mm × 6.25mm × 2.42mm BGA package
n
RF Microwave Power Amplifiers
n
Battery Powered DC Motors
n
3.3V Bus Telecom Transceivers
All registered trademarks and trademarks are the property of their respective owners.
22µF ×2
16V
22µF ×2
6.3V
2.2µF
R1
31.6k
4661 TA01a
LTM4661 VOUT
FB
VOUT
5V/2A
VIN
SDB
MODE/SYNC
INTVCC
FREQ COMP
GND
VIN
3.3V
LOAD CURRENT (A)
0
100
75
95
85
90
80
70
1
1.8
0.6
1.4
4661 TA01b
2
0.8
1.6
0.4
1.2
0.2
VOUT = 5V


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