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LTM4613 데이터시트 PDF




Linear Technology에서 제조한 전자 부품 LTM4613은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


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부품번호 LTM4613 기능
기능 DC/DC uModule Regulator
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LTM4613 데이터시트, 핀배열, 회로
LTM4613
FEATURES
EN55022B Compliant
36VIN, 15VOUT, 8A,
DC/DC µModule Regulator
DESCRIPTION
n Complete Low EMI Switch Mode Power Supply
n EN55022 Class B Compliant
n Wide Input Voltage Range: 5V to 36V
n 8A Output Current
n 3.3V to 15V Output Voltage Range
n Low Input and Output Referred Noise
n Output Voltage Tracking and Margining
n PLL Frequency Synchronization
n 2% Maximum Total DC Error
n Power Good Tracks with Margining
n Current Foldback Protection
n Parallel/Current Sharing
n Ultrafast Transient Response
n Current Mode Control
n Programmable Soft-Start
n Output Overvoltage Protection
n –55°C to 125°C Operating Temperature Range
(LTM4613MPV)
n 15mm × 15mm × 4.32mm LGA and
15mm × 15mm × 4.92mm BGA Packages
n SnPb (BGA) or RoHS Compliant (LGA and BGA) Finish
APPLICATIONS
n Telecom and Networking Equipment
n Industrial and Avionic Equipment
n RF Systems
The LTM®4613 is a complete, ultralow noise, 8A switch
mode DC/DC power supply. Included in the package are the
switching controller, power FETs, inductor and all support
components. Operating over an input voltage range of 5V
to 36V, the LTM4613 supports an output voltage range of
3.3V to 15V, set by a single external resistor. Only bulk
input and output capacitors are needed to finish the design.
High switching frequency and an adaptive on-time current
mode architecture enables a very fast transient response
to line and load changes without sacrificing stability.
The onboard input filter and noise cancellation circuits
achieve low noise coupling, thus effectively reducing
the electromagnetic interference (EMI)—see Figure 7.
Furthermore, the DC/DC µModule® regulator can be syn-
chronized with an external clock to reduce undesirable
frequency harmonics and allow PolyPhase® operation for
high load currents.
The LTM4613 is offered in 15mm × 15mm × 4.32mm
LGA and 15mm × 15mm × 4.92mm BGA packages. The
LTM4613 is available with SnPb (BGA) or RoHS compli-
ant terminal finish.
L, LT, LTC, LTM, µModule, PolyPhase, 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.
TYPICAL APPLICATION
VIN
24V
TO 36V
12V/8A Ultralow Noise µModule with 24V to 36V Input
CLOCK SYNC
CIN
0.1µF
51k
10µF
×3
VIN PLLIN
PGOOD
VOUT
RUN LTM4613
COMP
INTVCC
DRVCC
fSET
TRACK/SS
VD
VFB
FCB
MARG0
MARG1
MPGM
SGND PGND
22pF
5.23k
MARGIN
CONTROL
392k
5% MARGIN
4613 TA01
VOUT
12V
8A
COUT
Radiated Emission Scan with 24VIN to 12VOUT at 8A
70
60
50
40
30
20
10
0
–10
30
EN55022B LIMIT
226.2 422.4 613.6 814.3 1010.0
FREQUENCY (MHz)
4613 TA01b
4613fb
For more information www.linear.com/LTM4613
1




LTM4613 pdf, 반도체, 판매, 대치품
LTM4613
E LECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full internal
operating temperature range, otherwise
Application (front page) configuration.
specifications
are
at
TA
=
25°C
(Note
2),
VIN
=
24V,
unless
otherwise
noted.
Per
Typical
SYMBOL
PARAMETER
Control Section
VFB
VRUN
ITRACK/SS
VFCB
IFCB
tON(MIN)
tOFF(MIN)
RPLLIN
IDRVCC
RFBHI
Voltage at VFB Pin
RUN Pin On/Off Threshold
Soft-Start Charging Current
Forced Continuous Threshold
Forced Continuous Pin Current
Minimum On-Time
Minimum Off-Time
PLLIN Input Resistor
Current into DRVCC Pin
Resistor Between VOUT and VFB
Pins
VMPGM
VMARG0,
VMARG1
PGOOD
Margin Reference Voltage
MARG0, MARG1 Voltage
Thresholds
∆VFBH
∆VFBL
∆VFB(HYS)
VPGL
PGOOD Upper Threshold
PGOOD Lower Threshold
PGOOD Hysteresis
PGOOD Low Voltage
CONDITIONS
IOUT = 0A, VOUT = 12V
VTRACK/SS = 0V
VFCB = 0V
(Note 3)
(Note 3)
VOUT = 12V, IOUT = 0A, DRVCC = 5V
VFB Rising
VFB Falling
VFB Returning
IPGOOD = 5mA
MIN TYP MAX UNITS
l 0.591 0.6 0.609
1 1.5 1.9
–1 –1.5 –2
0.57 0.6 0.63
–1 –2
50 100
250 400
50
22 30
99.5 100 100.5
1.18
1.4
V
V
µA
V
µA
ns
ns
mA
V
V
7 10 13
–7 –10 –13
1.5
0.2 0.4
%
%
%
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 LTM4613 is tested under pulsed load conditions such that
TJ ≈ TA. The LTM4613E 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 LTM4613I is guaranteed to meet specifications over the
–40°C to 125°C internal operating temperature range. The LTM4613MP
is guaranteed and tested over the full –55°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.
Note 3: 100% tested at die level only.
Note 4: See the Output Current Derating curves for different VIN, VOUT
and TA.
Note 5: Guaranteed by design.
4613fb
4 For more information www.linear.com/LTM4613

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LTM4613 전자부품, 판매, 대치품
LTM4613
PIN FUNCTIONS (See Package Description for Pin Assignments)
VIN (Bank 1): Power Input Pins. Apply input voltage be-
tween these pins and PGND pins. Recommend placing
input decoupling capacitance directly between VIN pins
and PGND pins.
FCB (Pin M12): Forced Continuous Input. Connect this pin
to SGND to force continuous synchronization operation
at light load or to INTVCC to enable discontinuous mode
operation at light load.
PGND (Bank 2): Power Ground Pins for Both Input and
Output Returns.
VOUT (Bank 3): Power Output Pins. Apply output load
between these pins and PGND pins. Recommend placing
output decoupling capacitance directly between these pins
and PGND pins (see the LTM4613 Pin Configuration below).
VD (Pins C1 to C7, B6 to B7, A6): Top FET Drain Pins.
Add more high frequency ceramic decoupling capacitors
between VD and PGND to handle the input RMS current
and reduce the input ripple further.
DRVCC (Pins C10, E11, E12): These pins normally connect
to INTVCC for powering the internal MOSFET drivers. They
can be biased up to 6V from an external supply with about
50mA capability. This improves efficiency at the higher
input voltages by reducing power dissipation in the module.
See the Applications Information section.
INTVCC (Pin A7): This pin is for additional decoupling of
the 5V internal regulator.
PLLIN (Pin A8): External Clock Synchronization Input to the
Phase Detector. This pin is internally terminated to SGND
with a 50k resistor. Apply a clock above 2V and below
INTVCC subject to minimum on-time and minimum off-time
requirements. See the Applications Information section.
TRACK/SS (Pin A9): Output Voltage Tracking and Soft-Start
Pin. When the module is configured as a master output,
then a soft-start capacitor is placed on this pin to ground
to control the master ramp rate. A soft-start capacitor can
be used for soft-start turn-on as a standalone regulator.
Slave operation is performed by putting a resistor divider
from the master output to the ground, and connecting the
center point of the divider to this pin. See the Applications
Information section.
MPGM (Pins A12, B11): Programmable Margining In-
put. A resistor from these pins to ground sets a current
that is equal to 1.18V/R. This current multiplied by 10k
will equal a value in millivolts that is a percentage of the
0.6V reference voltage. Leave floating if margining is not
used. See the Applications Information section. To parallel
LTM4613s, each requires an individual MPGM resistor.
Do not tie MPGM pins together.
fSET (Pin B12): Frequency Set Internally to 600kHz at 12V
Output. An external resistor can be placed from this pin
to ground to increase frequency or from this pin to VIN
to reduce frequency. See the Applications Information
section for frequency adjustment.
TOP VIEW
VIN A
BANK 1 B
C
D
PGND
BANK 2
E
F
G
H
J
VOUT K
BANK 3 L
M
VD
SGND
fSET
MARG0
MARG1
DRVCC
VFB
PGOOD
SGND
NC
NC
NC
FCB
1 2 3 4 5 6 7 8 9 10 11 12
LGA PACKAGE
133-LEAD (15mm × 15mm × 4.32mm)
LTM4613 Pin Configuration
For more information www.linear.com/LTM4613
4613fb
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