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LTM4636 Scheda tecnica(PDF) 1 Page - Linear Technology

Il numero della parte LTM4636
Spiegazioni elettronici  40A DC/DC 關Module Regulator
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LTM4636 Scheda tecnica(HTML) 1 Page - Linear Technology

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LTM4636
1
4636f
For more information www.linear.com/LTM4636
Typical applicaTion
DescripTion
40A DC/DC µModule
Regulator
The LTM®4636 is a 40A step-down µModule (power
module) switching regulator with a stacked inductor as a
heat sink for quicker heat dissipation and cooler operation
in a small package. The exposed inductor permits direct
contact with airflow from any direction. The LTM4636
can deliver 40W (12VIN, 1VOUT, 40A, 200LFM) with only
40°C rise over the ambient temperature. Full-power 40W
is delivered, up to 83°C ambient and half-power 20W is
supported at 110°C ambient.
The LTM4636 operates at 92%, 90% and 88% efficiency,
delivering 15A, 30A and 40A, respectively, to a 1V load
(12VIN). The µModule regulator is scalable such that four
µModules in current sharing mode deliver 160W with only
40°C rise and 88% efficiency (12VIN, 1VOUT, 400LFM).
The LTM4636 is offered in a 16mm × 16mm × 7.07mm
BGA package.
L
, LT, LTC, LTM, PolyPhase, Burst Mode, µModule, Linear Technology, LTpowerCAD and the
Linear logo are registered trademarks 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, 8163643.
1V, 40A DC/DC µModule Regulator
FeaTures
applicaTions
n
Stacked Inductor Acts as Heat Sink
n
Wide Input Voltage Range: 4.7V to 15V
n
0.6V to 3.3V Output Voltage Range
n
±1.3% Total DC Output Voltage Error Over Line,
Load and Temperature (–40°C to 125°C)
n
Differential Remote Sense Amplifier for Precision
Regulation
n
Current Mode Control/Fast Transient Response
n
Frequency Synchronization
n
Parallel Current Sharing (Up to 240A)
n
Internal or External Compensation
n
88% Efficiency (12VIN, 1VOUT) at 40A
n
Overcurrent Foldback Protection
n
16mm
× 16mm × 7.07mm BGA Package
n
Telecom Servers and Networking Equipment
n
Industrial Equipment and Medical Systems
12VIN , 1VOUT Efficiency
vs Output Current
RUNC
RUNP
HIZREG
FREQ
TEMP+ TEMPSGND
VIN
1V
34.8k
22µF
0.1µF
22µF
16V
×5
4.70V TO
15V
100µF
25V
INTVCC
PVCC
VIN ≤ 5.5V, TIE VIN, INTVCC AND PVCC
TOGETHER, TIE RUNP TO GND.
VIN > 5.5V, THEN OPERATE AS SHOWN
OPTIONAL TEMP MONITOR
INTVCC
INTVCC
PVCC
LTM4636
PVCC
PGND
VOUTS1+
VOUT
VOUTS1–
VFB
+
470µF
6.3V
×3
+
7.5k
100µF
6.3V
×4
VOUT
1V, 40A
4636 TA01a
PINS NOT USED IN THIS CIRCUIT:
CLKOUT, GMON, PGOOD, PHMODE, PWM,
SW, TEST1, TEST2, TEST3, TEST4, TMON
COMPA
COMPB
SNSP1
SNSP2
MODE/PLLIN
TRACK/SS
15k
OUTPUT CURRENT (A)
0
90
95
100
15
25
4636 TA01b
85
80
5
10
20
30
40
35
75
70


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