uModule Regulator. LTM4624 Datasheet

LTM4624 Regulator. Datasheet pdf. Equivalent


Part LTM4624
Description 4A Step-Down DC/DC uModule Regulator
Feature LTM4624 14VIN, 4A Step-Down DC/DC µModule Regulator Features n Complete Solution in <1cm2 (Single-.
Manufacture Linear Technology
Datasheet
Download LTM4624 Datasheet


LTM4624 14VIN, 4A Step-Down DC/DC µModule Regulator Feature LTM4624 Datasheet
Recommendation Recommendation Datasheet LTM4624 Datasheet




LTM4624
LTM4624
14VIN, 4A Step-Down DC/DC
µModule Regulator
Features
n Complete Solution in <1cm2 (Single-Sided PCB) or
0.5cm2 (Dual-Sided PCB)
n Wide Input Voltage Range: 4V to 14V
n Input Voltage Down to 2.375V with External Bias
n 0.6V to 5.5V Output Voltage
n 4A DC, 5A Peak Output Current
n ±2% Total DC Output Voltage Error
n Current Mode Control, Fast Transient Response
n Output Voltage Tracking
n Selectable Discontinuous Mode
n Power Good Indicator
n Overvoltage, Overcurrent and Overtemperature
Protection
n 6.25mm × 6.25mm × 5.01mm BGA Package
Applications
n Telecom, Datacom, Networking and Industrial
Equipment
n Medical Diagnostic Equipment
n Data Storage Rack Units and Cards
n Test and Debug Systems
Description
The LTM®4624 is a complete 4A step-down switching mode
µModule® (micromodule) regulator in a tiny 6.25mm ×
6.25mm × 5.01mm BGA package. Included in the package
are the switching controller, power FETs, inductor and sup-
port components. Operating over an input voltage range of
4V to 14V or 2.375V to 14V with an external bias supply,
the LTM4624 supports an output voltage range of 0.6V to
5.5V, set by a single external resistor. Its high efficiency
design delivers 4A continuous, 5A peak, output current.
Only bulk input and output capacitors are needed.
The LTM4624 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 LTM4624 is available with SnPb (BGA) or RoHS
compliant terminal finish.
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.
Click to view associated TechClip Videos.
Typical Application
4A, 1.5V Output DC/DC µModule Step-Down Regulator
VIN
4V TO 14V
10µF
16V
0.1µF
VIN VOUT
SVIN
RUN LTM4624
INTVCC
PGOOD
MODE
COMP
TRACK/SS
FB
FREQ
GND SGND
VOUT
47µF
6.3V
1.5V
4A
40.2k
4624 TA01a
12VIN Efficiency vs Load Current
100
95
90
85
80
75
70 VOUT = 5V
65 VOUT = 3.3V
60
VOUT = 2.5V
VOUT = 1.5V
55
VOUT = 1.2V
VOUT = 1V
50
0 12 34
LOAD CURRENT (A)
4624 TA01b
For more information www.linear.com/LTM4624
4624fc
1



LTM4624
LTM4624
Absolute Maximum Ratings
(Note 1)
VIN, SVIN..................................................... –0.3V to 15V
VOUT (Note 4)....................................–0.3V to SVIN or 6V
RUN........................................................... –0.3V to SVIN
INTVCC....................................................... –0.3V to 3.6V
PGOOD, MODE, TRACK/SS, FREQ......... –0.3V to INTVCC
COMP, FB (Note 4)................................. –0.3V to INTVCC
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.................. 245°C
Pin Configuration
(See Pin Functions, Pin Configuration Table)
TOP VIEW
NC NC SVIN
SGND 5
FREQ 4
RUN
NC 3
TRACK/SS
FB
2
COMP 1
VIN
MODE
INTVCC
GND
PGOOD
VOUT
ABCDE
BGA PACKAGE
25-LEAD (6.25mm × 6.25mm × 5.01mm)
TJMAX = 125°C, θJCtop = 17°C/W, θJCbottom = 11°C/W,
θJB + θBA = 22°C/W, θJA = 22°C/W,
θJA DERIVED FROM 95mm × 76mm PCB WITH 4 LAYERS
θ VALUES DETERMINED PER JESD51-12, WEIGHT = 0.5g
Order Information
PART NUMBER
LTM4624EY#PBF
LTM4624IY#PBF
LTM4624IY
PAD OR BALL FINISH
SAC305 (RoHS)
SAC305 (RoHS)
SnPb (63/37)
PART MARKING*
DEVICE
FINISH CODE
LTM4624Y
e1
LTM4624Y
e1
LTM4624Y
e0
PACKAGE
TYPE
BGA
BGA
BGA
MSL
RATING
3
3
3
TEMPERATURE RANGE
(See Note 2)
–40°C to 125°C
–40°C to 125°C
–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.
• Terminal Finish 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 Tray Drawings:
www.linear.com/packaging
E lectrical Characteristics The l denotes the specifications which apply over the full internal
operating temperature
the front page.
range
(Note
2),
otherwise
specifications
are
at
TA
=
25°C.
VIN
=
SVIN
=
12V
per
the
typical
application
shown
on
SYMBOL
PARAMETER
CONDITIONS
MIN TYP MAX
Switching Regulator Section: per Channel
VIN
VOUT(RANGE)
VOUT(DC)
Input DC Voltage
Output Voltage Range
SVIN = VIN
l4
l 0.6
14
5.5
Output Voltage, Total
Variation with Line and Load
MCION D=E2=2µIFN, TCVOCUCT,V=IN10=04µVF
tCoer1a4mV,icIO, URTFB=
= 40.2k,
0A to 4A
(Note
3)
0°C to 125°C
1.477 1.50 1.523
–40°C to 125°C
l 1.47 1.50 1.53
VRUN
IQ(SVIN)
IS(VIN)
IOUT(DC)
RUN Pin On Threshold
Input Supply Bias Current
Input Supply Current
Output Continuous Current
Range
VRUN Rising
VIN = 12V, VOUT = 1.5V, MODE = INTVCC
VIN = 12V, VOUT = 1.5V, MODE = GND
Shutdown, RUN = 0, VIN = 12V
VIN = 12V, VOUT = 1.5V, IOUT = 4A
VIN = 12V, VOUT = 1.5V
1.1 1.2 1.3
6
2
11
0.62
04
UNITS
V
V
V
V
V
mA
mA
µA
A
A
4624fc
2 For more information www.linear.com/LTM4624







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