FeaTures
n
n
n
n
n
n
n
n
n
n
n
LTM4603HV
6A, 28V
IN
DC/DC µModule
with PLL, Output Tracking
and Margining
DescripTion
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
TM
is housed in a small surface mount 15mm
×
15mm
×
2.82mm 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 efficiency design
delivers 6A continuous current (8A peak). Only bulk input
and output capacitors are needed to complete the design.
The low profile (2.82mm) 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
®
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 sacrificing stability. An
onboard remote sense amplifier can be used to accurately
regulate an output voltage independent of load current.
L,
LT, LTC, LTM, Linear Technology, the Linear logo, µModule and PolyPhase are registered
trademarks and LTpowerCAD is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents including
5481178, 5847554, 6580258, 6304066, 6476589, 6774611, 6677210.
n
n
n
n
n
n
n
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% Efficiency at 5V
IN
, 3.3V
OUT
Programmable Soft-Start
Output Overvoltage Protection
RoHS Compliant Package with Gold Finish Pads (e4)
Small Footprint, Low Profile (15mm × 15mm ×
2.82mm) Surface Mount LGA Package
applicaTions
n
n
n
n
Telecom and Networking Equipment
Servers
Industrial Equipment
Point of Load Regulation
Typical applicaTion
2.5V/6A with 4.5V to 28V Input µModule Regulator
V
IN
4.5V TO 28V
V
IN
PGOOD
ON/OFF
C
IN
RUN
COMP
INTV
CC
DRV
CC
MPGM
SGND
PLLIN TRACK/SS
V
OUT
V
FB
MARG0
MARG1
V
OUT_LCL
DIFFV
OUT
V
OSNS+
V
OSNS–
CLOCK SYNC
TRACK/SS CONTROL
V
OUT
2.5V
6A
Efficiency vs Load Current with 24V
IN
100
90
EFFICIENCY (%)
80
70
60
50
40
24V
IN
, 1.8V
OUT
24V
IN
, 2.5V
OUT
24V
IN
, 3.3V
OUT
24V
IN
, 5V
OUT
0
1
4
3
5
2
LOAD CURRENT (A)
6
7
100pF
MARGIN
CONTROL
R
SET
19.1k
LTM4603HV
C
OUT
R1
392k
5% MARGIN
PGND
f
SET
4603HV TA01a
4603HV TA01b
4603hvfa
For more information
www.linear.com/LTM4603HV
1
LTM4603HV
absoluTe MaxiMuM raTings
(Note 1)
pin conFiguraTion
INTV
CC
PLLIN
TRACK/SS
RUN
COMP
MPGM
f
SET
MARG0
MARG1
DRV
CC
V
FB
PGOOD
SGND
V
OSNS+
DIFFV
OUT
V
OUT_LCL
V
OSNS–
LGA PACKAGE
118-LEAD (15mm × 15mm × 2.82mm)
T
JMAX
= 125°C,
θ
JA
= 15°C/W,
θ
JC
= 6°C/W
θ
JA
DERIVED FROM 95mm
×
76mm PCB WITH 4
LAYERS, WEIGHT = 1.7g
TOP VIEW
INTV
CC
, DRV
CC
, V
OUT_LCL
, V
OUT
(V
OUT
≤ 3.3V
with Remote Sense Amp)............................. –0.3V to 6V
PLLIN, TRACK/SS, MPGM, MARG0, MARG1,
PGOOD, f
SET
..............................–0.3V to INTV
CC
+ 0.3V
RUN ............................................................. –0.3V to 5V
V
FB
, COMP ................................................ –0.3V to 2.7V
V
IN
............................................................. –0.3V to 28V
V
OSNS+
, V
OSNS –
..........................–0.3V to INTV
CC
+ 0.3V
Operating Temperature Range (Note 2)....–40°C to 85°C
Junction Temperature ........................................... 125°C
Storage Temperature Range .................. –55°C to 125°C
V
IN
PGND
V
OUT
orDer inForMaTion
PART MARKING*
PART NUMBER
LTM4603HVEV#PBF
LTM4603HVIV#PBF
PAD OR BALL FINISH
Au (RoHS)
DEVICE
LTM4603HVV
FINISH CODE
e4
PACKAGE
TYPE
LGA
MSL
RATING
3
TEMPERATURE RANGE
(SEE NOTE 2)
–40°C to 85°C
•
Consult Marketing for parts specified with wider operating temperature
ranges. *Pad or ball finish code is per IPC/JEDEC J-STD-609.
•
Terminal Finish Part Marking:
www.linear.com/leadfree
•
Recommended LGA and BGA PCB Assembly and Manufacturing
Procedures:
www.linear.com/umodule/pcbassembly
•
LGA and BGA Package and Tray Drawings:
www.linear.com/packaging
The
l
denotes the specifications which apply over the full operating
temperature range (Note 2), otherwise specifications are at T
A
= 25°C, V
IN
= 12V, per typical application (front page) configuration,
R
SET
= 40.2k.
SYMBOL
V
IN(DC)
V
OUT(DC)
Input Specifications
V
IN(UVLO)
I
INRUSH(VIN)
Undervoltage Lockout Threshold
Input Inrush Current at Startup
I
OUT
= 0A
I
OUT
= 0A. V
OUT
= 1.5V
V
IN
= 5V
V
IN
= 12V
3.2
0.6
0.7
4
V
A
A
PARAMETER
Input DC Voltage
Output Voltage
C
IN
= 10µF ×2, C
OUT
= 2× 100µF X5R Ceramic
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 0A
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 0A
CONDITIONS
l
l
l
elecTrical characTerisTics
MIN
4.5
1.478
1.478
TYP
MAX
28
UNITS
V
V
V
1.5
1.5
1.522
1.522
2
4603hvfa
For more information
www.linear.com/LTM4603HV
LTM4603HV
The
l
denotes the specifications which apply over the full operating
temperature range (Note 2), otherwise specifications are at T
A
= 25°C, V
IN
= 12V, per typical application (front page) configuration,
R
SET
= 40.2k.
SYMBOL
I
Q(VIN,NOLOAD)
PARAMETER
Input Supply Bias Current
CONDITIONS
V
IN
= 12V, No Switching
V
IN
= 12V, V
OUT
= 1.5V, Switching Continuous
V
IN
= 5V, No Switching
V
IN
= 5V, V
OUT
= 1.5V, Switching Continuous
Shutdown, RUN = 0, V
IN
= 12V
V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 6A
V
IN
= 12V, V
OUT
= 3.3V, I
OUT
= 6A
V
IN
= 5V, V
OUT
= 1.5V, I
OUT
= 6A
No Load
V
IN
= 12V, V
OUT
= 1.5V (Note 5)
V
OUT
= 1.5V, I
OUT
= 0A, V
IN
= 4.5V to 28V
V
OUT
= 1.5V, I
OUT
= 0A to 6A, V
IN
= 12V with
Remote Sense Amp (Note 5)
I
OUT
= 0A, C
OUT
= 2× 100µF X5R Ceramic
V
IN
= 12V, V
OUT
= 1.5V
V
IN
= 5V, V
OUT
= 1.5V
I
OUT
= 3A, V
IN
= 12V, V
OUT
= 1.5V
C
OUT
= 200µF
V
OUT
= 1.5V, I
OUT
= 0A, TRACK/SS = 10nF
V
IN
= 12V
V
IN
= 5V
C
OUT
= 200µF, TRACK/SS = Open
V
OUT
= 1.5V, I
OUT
= 1A Resistive Load
V
IN
= 12V
V
IN
= 5V
Load: 0% to 50% to 0% of Full Load,
C
OUT
= 2× 22µF Ceramic, 470µF 4V Sanyo
POSCAP
V
IN
= 12V
V
IN
= 5V
l
elecTrical characTerisTics
MIN
TYP
3.8
25
2.5
43
22
0.92
1.83
2.12
MAX
UNITS
mA
mA
mA
mA
µA
A
A
A
I
S(VIN)
INTV
CC
Output Specifications
I
OUTDC
ΔV
OUT(LINE)
V
OUT
ΔV
OUT(LOAD)
V
OUT
V
OUT(AC)
f
S
ΔV
OUT(START)
Input Supply Current
V
IN
= 12V, RUN > 2V
Output Continuous Current Range
Line Regulation Accuracy
Load Regulation Accuracy
Output Ripple Voltage
4.7
0
5
5.3
6
0.3
0.25
V
A
%
%
l
10
10
1000
mV
P-P
mV
P-P
kHz
Output Ripple Voltage Frequency
Turn-On Overshoot
20
20
mV
mV
t
START
Turn-On Time
0.5
0.5
ms
ms
ΔV
OUTLS
Peak Deviation for Dynamic Load
35
35
25
8
8
0
0
1
3
2
INTV
CC
– 1
INTV
CC
– 1
1.25
mV
mV
µs
A
A
V
V
mV
V/V
MHz
V/µs
kW
dB
4603hvfa
t
SETTLE
I
OUTPK
Settling Time for Dynamic Load Step Load: 0% to 50% to 10% of Full Load
V
IN
= 12V
Output Current Limit
C
OUT
= 2× 100µF X5R Ceramic
V
IN
= 12V, V
OUT
= 1.5V
V
IN
= 5V, V
OUT
= 1.5V
Remote Sense Amp (Note 3)
V
OSNS+
, V
OSNS–
CM Range
DIFFV
OUT
Range
V
OS
AV
GBP
SR
R
IN
CMRR
Common Mode Input Voltage Range V
IN
= 12V, RUN > 2V
Output Voltage Range
Input Offset Voltage Magnitude
Differential Gain
Gain Bandwidth Product
Slew Rate
Input Resistance
Common Mode Rejection Ratio
V
OSNS+
to GND
V
IN
= 12V, DIFFV
OUT
Load = 100k
20
100
For more information
www.linear.com/LTM4603HV
3
LTM4603HV
The
l
denotes the specifications which apply over the full operating
temperature range (Note 2), otherwise specifications are at T
A
= 25°C, V
IN
= 12V, per typical application (front page) configuration,
R
SET
= 40.2k.
SYMBOL
Control Stage
V
FB
V
RUN
I
TRACK/SS
t
ON(MIN)
t
OFF(MIN)
R
PLLIN
I
DRVCC
R
FBHI
V
MPGM
V
MARG0
, V
MARG1
PGOOD Output
ΔV
FBH
ΔV
FBL
ΔV
FB(HYS)
V
PGL
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
V
FB
Rising
V
FB
Falling
V
FB
Returning (Note 4)
I
PGOOD
= 5mA
7
–7
10
–10
1.5
0.15
13
–13
3
0.4
%
%
%
V
Error Amplifier Input Voltage
Accuracy
RUN Pin On/Off Threshold
Soft-Start Charging Current
Minimum On Time
Minimum Off Time
PLLIN Input Resistance
Current into DRV
CC
Pin
Resistor Between V
OUT_LCL
and V
FB
Margin Reference Voltage
MARG0, MARG1 Voltage Thresholds
V
OUT
= 1.5V, I
OUT
= 1A, DRV
CC
= 5V
60.098
V
TRACK/SS
= 0V
(Note 4)
(Note 4)
I
OUT
= 0A, V
OUT
= 1.5V
l
elecTrical characTerisTics
PARAMETER
CONDITIONS
MIN
0.594
1
–1
TYP
0.6
1.5
–1.5
50
250
50
18
60.4
1.18
1.4
MAX
0.606
1.9
–2
100
400
25
60.702
UNITS
V
V
µA
ns
ns
kW
mA
kW
V
V
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
The LTM4603HV is tested under pulsed load conditions such
that T
J
≈ T
A
. The LTM4603HVEV is guaranteed to meet performance
specifications from 0°C to 85°C. Specifications over the –40°C to 85°C
operating temperature range are assured by design, characterization
and correlation with statistical process controls. The LTM4603HVIV is
guaranteed over the –40°C to 85°C operating temperature range.
Note 3:
Remote sense amplifier recommended for ≤3.3V output.
Note 4:
100% tested at die level only.
Note 5:
See output current derating curves for different V
IN
, V
OUT
and T
A
.
4
4603hvfa
For more information
www.linear.com/LTM4603HV
LTM4603HV
Typical perForMance characTerisTics
Efficiency vs Load Current
with 5V
IN
100
90
EFFICIENCY (%)
EFFICIENCY (%)
80
70
60
50
40
5V
IN
, 0.6V
OUT
5V
IN
, 1.2V
OUT
5V
IN
, 1.5V
OUT
5V
IN
, 1.8V
OUT
5V
IN
, 2.5V
OUT
5V
IN
, 3.3V
OUT
0
1
4
3
2
5
LOAD CURRENT (A)
6
7
100
90
EFFICIENCY (%)
80
70
60
50
40
12V
IN
, 1.2V
OUT
12V
IN
, 1.5V
OUT
12V
IN
, 1.8V
OUT
12V
IN
, 2.5V
OUT
12V
IN
, 3.3V
OUT
12V
IN
, 5V
OUT
0
1
4
3
2
5
LOAD CURRENT (A)
6
7
(See Figure 20 for all curves)
Efficiency vs Load Current
with 24V
IN
100
90
80
70
60
50
40
24V
IN
, 1.8V
OUT
24V
IN
, 2.5V
OUT
24V
IN
, 3.3V
OUT
24V
IN
, 5V
OUT
0
1
4
3
5
2
LOAD CURRENT (A)
6
7
Efficiency vs Load Current
with 12V
IN
4603HV G01
4603HV G02
4603HV G03
1.2V Transient Response
1.5V Transient Response
1.8V Transient Response
LOAD STEP
1A/DIV
LOAD STEP
1A/DIV
LOAD STEP
1A/DIV
V
OUT
50mV/DIV
V
OUT
50mV/DIV
V
OUT
50mV/DIV
25µs/DIV
1.2V AT 3A/µs LOAD STEP
C
OUT
: 1x 22µF, 6.3V CERAMIC
1x 330µF, 4V SANYO POSCAP
4603HV G04
25µs/DIV
1.5V AT 3A/µs LOAD STEP
C
OUT
: 1x 22µF, 6.3V CERAMIC
1x 330µF, 4V SANYO POSCAP
4603HV G05
25µs/DIV
1.8V AT 3A/µs LOAD STEP
C
OUT
: 1x 22µF, 6.3V CERAMIC
1x 330µF, 4V SANYO POSCAP
4603HV G06
2.5V Transient Response
3.3V Transient Response
LOAD STEP
1A/DIV
LOAD STEP
1A/DIV
V
OUT
50mV/DIV
V
OUT
50mV/DIV
25µs/DIV
2.5V AT 3A/µs LOAD STEP
C
OUT
: 1x 22µF, 6.3V CERAMIC
1x 330µF, 4V SANYO POSCAP
4603HV G07
25µs/DIV
3.3V AT 3A/µs LOAD STEP
C
OUT
: 1x 22µF, 6.3V CERAMIC
1x 330µF, 4V SANYO POSCAP
4603HV G08
4603hvfa
For more information
www.linear.com/LTM4603HV
5
单片机
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
