LTM4603V Linear Technology Corporation, LTM4603V Datasheet
LTM4603V
Manufacturer Part Number
LTM4603V
Description
Manufacturer
Linear Technology Corporation
Datasheet
1.LTM4603V.pdf
(24 pages)
Available stocks
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Quantity
Price
Company:
Part Number:
LTM4603V
Manufacturer:
LINEAR
Quantity:
513
Part Number:
LTM4603V
Manufacturer:
LT/凌特
Quantity:
20 000
Company:
Part Number:
LTM4603V-1
Manufacturer:
LT
Quantity:
281
Part Number:
LTM4603V-1
Manufacturer:
LINEAR
Quantity:
20 000
Part Number:
LTM4603V-1#PBF
Manufacturer:
LINEAR
Quantity:
20 000
FEATURES
APPLICATIO S
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TYPICAL APPLICATIO
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4.5V TO 20V
Complete Switch Mode Power Supply
Wide Input Voltage Range: 4.5V to 20V
6A DC Typical, 8A Peak Output Current
0.6V to 5V Output Voltage
Output Voltage Tracking and Margining
Remote Sensing for Precision Regulation
(LTM4603 Only)
Typical Operating Frequency: 1MHz
PLL Frequency Synchronization
1.5% Regulation
Current Foldback Protection (Disabled at Start-Up)
Pin Compatible with the LTM4601
Pb-Free (e4) RoHS Compliant Package with Gold
Finish Pads
Ultrafast Transient Response
Current Mode Control
Up to 93% Effi ciency at 5V
Programmable Soft-Start
Output Overvoltage Protection
Small Footprint, Low Profi le (15mm × 15mm ×
2.8mm) Surface Mount LGA Package
Telecom and Networking Equipment
Servers
Industrial Equipment
Point of Load Regulation
V
C
IN
IN
1.5V/6A Power Supply with 4.5V to 20V Input
5% MARGIN
ON/OFF
392k
U
PGOOD
RUN
COMP
INTV
DRV
MPGM
CC
CC
SGND
V
IN
LTM4603
PLLIN
PGND
IN
TRACK/SS
, 3.3V
f
V
DIFFV
SET
OUT_LCL
MARG0
MARG1
U
V
V
OSNS
OSNS
V
OUT
OUT
V
FB
+
–
OUT
CLOCK SYNC
TRACK/SS CONTROL
MARGIN
CONTROL
100pF
13.3k
4603 TA01a
C
V
1.5V
6A
OUT
OUT
DESCRIPTIO
The LTM
DC/DC power supply with onboard switching controller,
MOSFETs, inductor and all support components. The
µModule
15mm × 2.8mm LGA package. Operating over an input
voltage range of 4.5 to 20V, the LTM4603 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.
The low profi le (2.8mm) and light weight (1.73g) 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
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.
The onboard remote sense amplifi er is not available in the
LTM4603-1. The LTM4603/LTM4603-1 are pin compatible
with the 12A LTM4601/LTM4601-1.
Corporation. µModule is a trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
, LT, LTC, LTM and PolyPhase are registered trademarks of Linear Technology
with PLL, Output Tracking
®
TM
4603 is a complete 6A step-down switch mode
®
is housed in a small surface mount 15mm ×
operation for high load currents.
Effi ciency vs Load Current with 12V
6A DC/DC µModule
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
LTM4603/LTM4603-1
0
U
1
OUTPUT CURRENT (A)
2
and Margining
3
4
12V
12V
12V
12V
12V
12V
5
IN
IN
IN
IN
IN
IN
, 1.2V
, 1.5V
, 1.8V
, 2.5V
, 3.3V
, 5V
6
4603 TA01b
OUT
OUT
OUT
OUT
OUT
OUT
7
IN
1
4603f
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