Linear Technology DC1083A-B LTM4603HV Synchronizable 28V, 6A Step-Down μModule Regulator DC1083A-B DC1083A-B Ficha De Dados
Códigos do produto
DC1083A-B
LTM4603HV
1
4603hvf
6A, 28V
IN
DC/DC µModule
with PLL, Output Tracking
and Margining
■
Telecom and Networking Equipment
■
Servers
■
Industrial Equipment
■
Point of Load Regulation
■
Complete Switch Mode Power Supply
■
Wide Input Voltage Range: 4.5V to 28V
■
6A DC Typical, 8A Peak Output Current
■
0.6V to 5V Output Voltage
■
Output Voltage Tracking and Margining
■
Remote Sensing for Precision Regulation
■
Typical Operating Frequency: 1MHz
■
PLL Frequency Synchronization
■
1.5% Regulation
■
Current Foldback Protection (Disabled at Start-Up)
■
Pin Compatible with the LTM4601/LTM4601HV/
LTM4603
■
Ultrafast Transient Response
■
Current Mode Control
■
Up to 93% Effi ciency at 5V
IN
, 3.3V
OUT
■
Programmable Soft-Start
■
Output Overvoltage Protection
■
Pb-Free (e4) RoHS Compliant Package with Gold
Finish Pads
■
Small Footprint, Low Profi le (15mm × 15mm ×
2.8mm) Surface Mount LGA Package
2.5V/6A with 4.5V to 28V Input μModule Regulator
APPLICATIO S
U
FEATURES
DESCRIPTIO
U
TYPICAL APPLICATIO
U
Effi ciency vs Load Current with 24V
IN
The LTM
®
4603HV is a complete 6A step-down switch mode
DC/DC power supply with onboard switching controller,
MOSFETs, inductor and all support components. The
μModule
MOSFETs, inductor and all support components. The
μModule
TM
is housed in a small surface mount 15mm
×
15mm
× 2.8mm LGA package. Operating over an input
voltage range of 4.5 to 28V, the LTM4603HV supports an
output voltage range of 0.6V to 5V as well as output voltage
tracking and margining. The high effi ciency design deliv-
ers 6A continuous current (8A peak). Only bulk input and
output capacitors are needed to complete the design.
output voltage range of 0.6V to 5V as well as output voltage
tracking and margining. The high effi ciency design deliv-
ers 6A continuous current (8A peak). Only bulk input and
output capacitors are needed to complete the design.
The low profi le (2.8mm) and light weight (1.7g) package
easily mounts on the unused space on the back side of
PC boards for high density point of load regulation. The
μModule can be synchronized with an external clock for
reducing undesirable frequency harmonics and allows
PolyPhase
easily mounts on the unused space on the back side of
PC boards for high density point of load regulation. The
μModule can be synchronized with an external clock for
reducing undesirable frequency harmonics and allows
PolyPhase
®
operation for high load currents.
A high switching frequency and adaptive on-time current
mode architecture deliver a very fast transient response
to line and load changes without sacrifi cing stability. An
onboard remote sense amplifi er can be used to accurately
regulate an output voltage independent of load current.
mode architecture deliver a very fast transient response
to line and load changes without sacrifi cing stability. An
onboard remote sense amplifi er can be used to accurately
regulate an output voltage independent of load current.
, LT, LTC, LTM and PolyPhase are registered trademarks of Linear Technology
Corporation.
Corporation.
μModule is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
V
OUT
V
FB
MARG0
MARG1
V
OUT_LCL
DIFFV
OUT
V
OSNS
+
V
OSNS
–
PGOOD
RUN
COMP
INTV
CC
DRV
CC
MPGM
TRACK/SS
PLLIN
LTM4603HV
ON/OFF
392k
19.1k
MARGIN
CONTROL
CONTROL
C
OUT
4603HV TA01a
V
OUT
2.5V
6A
6A
CLOCK SYNC
TRACK/SS CONTROL
TRACK/SS CONTROL
100pF
C
IN
V
IN
f
SET
PGND
SGND
5% MARGIN
V
IN
4.5V TO 28V
LOAD CURRENT (A)
0
EFFICIENCY (%)
80
90
100
3
5
4603HV G03
70
60
1
2
4
6
7
50
40
24V
IN
, 1.8V
OUT
24V
IN
, 2.5V
OUT
24V
IN
, 3.3V
OUT
24V
IN
, 5V
OUT