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LTM4624EY#PBF

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P26
LTM4624
1
4624fc
For more information www.linear.com/LTM4624
Typical applicaTion
FeaTures DescripTion
14V
IN
, 4A Step-Down DC/DC
µModule Regulator
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 ver
y 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.
4A, 1.5V Output DC/DC µModule Step-Down Regulator 12V
IN
Efficiency vs Load Current
applicaTions
n
Complete Solution in <1cm
2
(Single-Sided PCB) or
0.5cm
2
(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
n
Telecom, Datacom, Networking and Industrial
Equipment
n
Medical Diagnostic Equipment
n
Data Storage Rack Units and Cards
n
Test and Debug Systems
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
4624 TA01a
10µF
16V
V
IN
4V TO 14V
V
OUT
1.5V
4A
47µF
6.3V
0.1µF
V
IN
SV
IN
RUN
INTV
CC
MODE
TRACK/SS
FREQ
V
OUT
FB
PGOOD
COMP
GND SGND
LTM4624
LOAD CURRENT (A)
0
EFFICIENCY (%)
80
85
90
4
4624 TA01b
75
70
50
1
2
3
55
60
65
100
95
V
OUT
= 5V
V
OUT
= 3.3V
V
OUT
= 2.5V
V
OUT
= 1.5V
V
OUT
= 1.2V
V
OUT
= 1V
Click to view associated TechClip Videos.
LTM4624
2
4624fc
For more information www.linear.com/LTM4624
pin conFiguraTionabsoluTe MaxiMuM raTings
V
IN
, SV
IN
.................................................... –0.3V to 15V
V
OUT
(Note 4) ...................................–0.3V to SV
IN
or 6V
RUN .......................................................... –0.3V to SV
IN
INTV
CC
...................................................... –0.3V to 3.6V
PGOOD, MODE, TRACK/SS, FREQ ........ –0.3V to INTV
CC
COMP, FB (Note 4) ................................–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 ................. 245°C
(Note 1) (See Pin Functions, Pin Configuration Table)
BGA PACKAGE
25-LEAD (6.25mm × 6.25mm × 5.01mm)
TOP VIEW
NC SV
IN
V
IN
V
OUT
INTV
CC
MODE
GND
A
5
1
2
3
4
SGND
FREQ
NC
TRACK/SS
RUN
B C D E
NC
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
elecTrical characTerisTics
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.
orDer inForMaTion
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Switching Regulator Section: per Channel
V
IN
Input DC Voltage SV
IN
= V
IN
l
4 14 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
,V
IN
= 4V to 14V, I
OUT
= 0A to 4A (Note 3)
0°C to 125°C
–40°C to 125°C
l
1.477
1.47
1.50
1.50
1.523
1.53
V
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
= 4A 0.62 A
I
OUT(DC)
Output Continuous Current
Range
V
IN
= 12V, V
OUT
= 1.5V 0 4 A
PART NUMBER PAD OR BALL FINISH
PART MARKING*
PACKAGE
TYPE
MSL
RATING
TEMPERATURE RANGE
(See Note 2)DEVICE FINISH CODE
LTM4624EY#PBF SAC305 (RoHS) LTM4624Y e1 BGA 3 –40°C to 125°C
LTM4624IY#PBF SAC305 (RoHS) LTM4624Y e1 BGA 3 –40°C to 125°C
LTM4624IY SnPb (63/37) LTM4624Y 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.
• 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
LTM4624
3
4624fc
For more information www.linear.com/LTM4624
elecTrical characTerisTics
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 LTM4624 is tested under pulsed load conditions such that
T
J
≈ T
A
. The LTM4624E is guaranteed to meet performance specifications
over the 0°C to 125°C internal operating temperature range. Specifications
over the –40°C to 125°C internal operating temperature range are assured
by design, characterization and correlation with statistical process
controls. The LTM4624I is guaranteed to meet specifications over the
full –40°C to 125°C internal operating temperature range. Note that the
maximum ambient temperature consistent with these specifications is
determined by specific operating conditions in conjunction with board
layout, the rated package thermal resistance and other environmental
factors.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
ΔV
OUT
(Line)/V
OUT
Line Regulation Accuracy V
OUT
= 1.5V, V
IN
= 4V to 14V, 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 4A
l
1 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, 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
160 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 5 7 A
V
FB
Voltage at FB Pin I
OUT
= 0A, V
OUT
= 1.5V
I
OUT
= 0A, V
OUT
= 1.5V, –40°C to 125°C
l
0.594
0.591
0.60
0.60
0.606
0.609
V
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 2.5 4 µA
V
IN(UVLO)
V
IN
Undervoltage Lockout V
IN
Falling
V
IN
Hysteresis
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
–13
7
–10
10
–7
13
%
%
I
PGOOD
PGOOD Leakage 2 µA
V
PGL
PGOOD Voltage Low I
PGOOD
= 1mA 0.02 0.1 V
V
INTVCC
Internal V
CC
Voltage SV
IN
= 4V to 14V 3.2 3.3 3.4 V
V
INTVCC
Load Reg INTV
CC
Load Regulation I
CC
= 0mA to 20mA 0.5 %
f
OSC
Oscillator Frequency 1 MHz
Note 3: See output current derating curves for different V
IN
, V
OUT
and T
A
.
Note 4: 100% tested at wafer level.
Note 5: This IC includes overtemperature protection that is intended
to protect the device during momentary overload conditions. Junction
temperature will exceed 125°C when overtemperature protection is active.
Continuous operation above the specified maximum operating junction
temperature may impair device reliability.
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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LTM4624EY#PBF

Mfr. #:
Buy LTM4624EY#PBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 14VIN, 4A Step-Down DC/DC Module Regulator
Lifecycle:
New from this manufacturer.
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