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LTM4623EY#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27P28-P28
LTM4623
1
4623fc
For more information www.linear.com/LTM4623
Typical applicaTion
FeaTures DescripTion
Ultrathin 20V
IN
, 3A Step-Down
DC/DC µModule Regulator
The LTM
®
4623 is a complete 3A step-down switching
mode µModule (micromodule) regulator in a tiny ultrathin
6.25mm × 6.25mm × 1.82mm LGA and 6.25mm × 6.25mm
× 2.42mm BGA packages. Included in the package 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 LTM4623 supports an output voltage range of 0.6V to
5.5V, set by a single external resistor. Its high efficiency
design delivers 3A continuous output current. Only ceramic
input and output capacitors are needed.
The LTM4623 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 LTM4623 is available with SnPb (BGA) or RoHS
compliant terminal finish.
3A, 1.5V Output DC/DC µModule
®
Step-Down Regulator
1.5V Output Efficiency vs Load Current
applicaTions
n
<2mm Height, Complete Solution in <1cm
2
(Single-Sided PCB) or 0.5cm
2
(Dual-Sided PCB)
n
Wide Input Voltage Range: 4V to 20V
n
Input Voltage Down to 2.375V with External Bias
n
0.6V to 5.5V Output Voltage
n
3A DC Output Current
n
±1.5% Maximum Total DC Output Voltage Error
n
Current Mode Control, Fast Transient Response
n
Low EMI EN55022 Class B Compliant
n
External Frequency Synchronization
n
Multiphase Operation with Current Sharing
n
Output Voltage Tracking
n
Selectable Discontinuous Mode
n
Power Good Indicator
n
Overvoltage, Overcurrent and Overtemperature Pro-
tection
n
Ultrathin (6.25mm × 6.25mm × 1.82mm) LGA Package
and (6.25mm × 6.25mm × 2.42mm) BGA Package
n
PCIe and Backside PCB Mounting
n
Telecom, Datacom, Networking and Industrial
Equipment
n
Data Storage Rack Units and Cards
L, LT, LTC, LTM, µModule, Linear Technology and the Linear logo are registered trademarks
and LTpowerCAD is a trademark of Linear Technology Corporation. All other trademarks are the
property of their respective owners.
40.2k
4623 TA01a
10µF
25V
V
IN
4V TO 20V
V
OUT
1.5V
3A
47µF
6.3V
0.1µF
V
IN
SV
IN
RUN
INTV
CC
MODE
PHMODE
TRACK/SS
FREQ
V
OUT
FB
PGOOD
COMP
GND SGND
LTM4623
CLKIN CLKOUT
LOAD CURRENT (A)
0
EFFICIENCY (%)
80
85
90
3
4623 TA01b
75
70
60
0.5
1 2
1.5 2.5
65
95
V
IN
= 5V
V
IN
= 12V
LTM4623
2
4623fc
For more information www.linear.com/LTM4623
pin conFiguraTionabsoluTe MaxiMuM raTings
V
IN
, SV
IN
.................................................... –0.3V to 22V
V
OUT
................................................. –0.3V to SV
IN
or 6V
RUN ........................................................... –0.3V to 22V
INTV
CC
...................................................... –0.3V to 3.6V
PGOOD, MODE, TRACK/SS, FREQ,
PHMODE, CLKIN .................................. –0.3V to INTV
CC
Internal Operating Junction Temperature Range
(Notes 2, 5) ............................................ –40°C to 125°C
Storage Temperature Range .................. –55°C to 125°C
Peak Solder Reflow Body Temperature .................260°C
(Note 1) (See Pin Functions, Pin Configuration Table)
LGA PACKAGE 25-LEAD (6.25mm × 6.25mm × 1.82mm)
BGA PACKAGE 25-LEAD (6.25mm × 6.25mm × 2.42mm)
TOP VIEW
CLKIN SV
IN
V
IN
V
OUT
INTV
CC
MODE
GND
A
5
1
2
3
4
SGND
FREQ
PHMODE
TRACK/SS
RUN
B C D E
CLKOUT
PGOOD
FB
COMP
T
JMAX
= 125°C, θ
JCtop
= 17°C/W, θ
JCbottom
= 11°C/ W,
θ
JB
+ θ
BA
= 22°C/W, θ
JA
= 22°C/W,
θ
JA
DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS
θ VALUES DETERMINED PER JESD51-12, WEIGHT = 0.5g
orDer inForMaTion
PART NUMBER PAD OR BALL FINISH
PART MARKING*
PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(Note 2)DEVICE FINISH CODE
LTM4623EV#PBF Au (RoHS) LTM4623V e4 LGA 3 –40°C to 125°C
LTM4623IV#PBF Au (RoHS) LTM4623V e4 LGA 3 –40°C to 125°C
LTM4623EY#PBF SAC305 (RoHS) LTM4623Y e1 BGA 3 –40°C to 125°C
LTM4623IY#PBF SAC305 (RoHS) LTM4623Y e1 BGA 3 –40°C to 125°C
LTM4623IY SnPb (63/37) LTM4623Y e0 BGA 3 –40°C to 125°C
Consult Marketing for parts specified with wider operating temperature
ranges. *Device temperature grade is indicated by a label on the shipping
container. Pad or ball finish code is per IPC/JEDEC J-STD-609.
• Pb-free and Non-Pb-free Part Markings:
www.linear.com/leadfree
• Recommended LGA and BGA PCB Assembly and Manufacturing
Procedures:
www
.linear.com/umodule/pcbassembly
• LGA and BGA Package and T
ray Drawings:
www.linear.com/packaging
http://www.linear.com/product/LTM4623#orderinfo
LTM4623
3
4623fc
For more information www.linear.com/LTM4623
elecTrical characTerisTics
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
IN
Input DC Voltage SV
IN
= V
IN
l
4 20 V
V
OUT(RANGE)
Output Voltage Range
l
0.6 5.5 V
V
OUT(DC)
Output Voltage, Total
Variation with Line and Load
C
IN
= 22µF, C
OUT
= 100µF Ceramic, R
FB
= 40.2k,
MODE = INTV
CC
, I
OUT
= 0A to 3A (Note 3)
–40°C to 125°C
l
1.477
1.50
1.523
V
V
RUN
RUN Pin On Threshold V
RUN
Rising 1.1 1.2 1.3 V
I
Q(SVIN)
Input Supply Bias Current V
IN
= 12V, V
OUT
= 1.5V, MODE = INTV
CC
V
IN
= 12V, V
OUT
= 1.5V, MODE = GND
Shutdown, RUN = 0, V
IN
= 12V
6
2
11
mA
mA
µA
I
S(VIN)
Input Supply Current V
IN
= 12V, V
OUT
= 1.5V, I
OUT
= 3A 0.5 A
I
OUT(DC)
Output Continuous Current
Range
V
IN
= 12V, V
OUT
= 1.5V 0 3 A
ΔV
OUT
(Line)/V
OUT
Line Regulation Accuracy V
OUT
= 1.5V, V
IN
= 4V to 20V, I
OUT
= 0A
l
0.04 0.15 %/V
ΔV
OUT
(Load)/V
OUT
Load Regulation Accuracy V
OUT
= 1.5V, I
OUT
= 0A to 3A
l
0.5 1.5 %
V
OUT(AC)
Output Ripple Voltage I
OUT
= 0A, C
OUT
= 100µF Ceramic, V
IN
= 12V,
V
OUT
= 1.5V
5 mV
ΔV
OUT(START)
Turn-On Overshoot I
OUT
= 0A, C
OUT
= 100µF Ceramic, TRACK/SS = 0.01µF,
V
IN
= 12V, V
OUT
= 1.5V
30 mV
t
START
Turn-On Time C
OUT
= 100µF Ceramic, No Load, TRACK/SS = 0.01µF,
V
IN
= 12V, V
OUT
= 1.5V
2.5 ms
ΔV
OUTLS
Peak Deviation for Dynamic
Load
Load: 0% to 50% to 0% of Full Load, C
OUT
= 47µF
Ceramic, V
IN
= 12V, V
OUT
= 1.5V
80 mV
t
SETTLE
Settling Time for Dynamic
Load Step
Load: 0% to 50% to 0% of Full Load, C
OUT
= 47µF
Ceramic, V
IN
= 12V, V
OUT
= 1.5V
40 µs
I
OUTPK
Output Current Limit V
IN
= 12V, V
OUT
= 1.5V 3.5 5 A
V
FB
Voltage at FB Pin I
OUT
= 0A, V
OUT
= 1.5V, –40°C to 125°C
l
0.592 0.60 0.606 V
I
FB
Current at FB Pin (Note 4) ±30 nA
R
FBHI
Resistor Between V
OUT
and
FB Pins
60.05 60.40 60.75 kΩ
I
TRACK/SS
Track Pin Soft-Start Pull-Up
Current
TRACK/SS = 0V 2 4 µA
V
IN(UVLO)
V
IN
Undervoltage Lockout V
IN
Falling, SV
IN
= V
IN
V
IN
Hysteresis, SV
IN
= V
IN
2.4 2.6
350
2.8 V
mV
t
ON(MIN)
Minimum On-Time (Note 4) 40 ns
t
OFF(MIN)
Minimum Off-Time (Note 4) 70 ns
V
PGOOD
PGOOD Trip Level V
FB
With Respect to Set Output
V
FB
Ramping Negative
V
FB
Ramping Positive
–15
7
–10
10
–7
15
%
%
The l denotes the specifications which apply over the full internal
operating temperature range (Note 2), otherwise specifications are at T
A
= 25°C. V
IN
= SV
IN
= 12V per the typical application shown on
the front page.
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LTM4623EY#PBF

Mfr. #:
Buy LTM4623EY#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators Ultrathin 20VIN, 3A Step-Down Module Regulator
Lifecycle:
New from this manufacturer.
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