LTM4612MPV#PBF Linear Technology, LTM4612MPV#PBF Datasheet

IC BUCK SYNC ADJ 5A 133LGA

LTM4612MPV#PBF

Manufacturer Part Number
LTM4612MPV#PBF
Description
IC BUCK SYNC ADJ 5A 133LGA
Manufacturer
Linear Technology
Series
µModuler
Type
Point of Load (POL) Non-Isolatedr
Datasheet

Specifications of LTM4612MPV#PBF

Design Resources
LTM4612 Spice Model
Output
3.3 ~ 15 V
Number Of Outputs
1
Power (watts)
75W
Mounting Type
Surface Mount
Voltage - Input
5 ~ 36 V
Package / Case
133-LGA
1st Output
3.3 ~ 15 VDC @ 5A
Size / Dimension
0.59" L x 0.59" W x 0.11" H (15mm x 15mm x 2.8mm)
Power (watts) - Rated
75W
Operating Temperature
-55°C ~ 125°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
3rd Output
-
2nd Output
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LTM4612MPV#PBF
Manufacturer:
Linear Technology
Quantity:
135
Company:
Part Number:
LTM4612MPV#PBF
Manufacturer:
LT
Quantity:
218
Company:
Part Number:
LTM4612MPV#PBF
Manufacturer:
LINEAR
Quantity:
25
FeaTures
applicaTions
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
n
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n
n
n
Typical applicaTion
TO 36V
22V
V
Complete Low EMI Switch Mode Power Supply
CISPR 22 Class B Compliant
Wide Input Voltage Range: 5V to 36V
5A DC, 7A Peak Output Current
3.3V to 15V Output Voltage Range
Low Input and Output Referred Noise
Output Voltage Tracking and Margining
PLL Frequency Synchronization
±1.5% Set Point Accuracy
Power Good Tracks with Margining
Current Foldback Protection (Disabled at Start-Up)
Parallel/Current Sharing
Ultrafast Transient Response
Current Mode Control
Programmable Soft-Start
Output Overvoltage Protection
–55°C to 125°C Operating Temperature Range
(LTM4612MPV)
Small Surface Mount Footprint, Low Profile
(15mm × 15mm × 2.8mm) LGA Package
Telecom and Networking Equipment
Industrial and Avionic Equipment
RF Systems
IN
12V/5A Ultralow Noise µModule with 22V to 36V Input
C
IN
0.01µF
2M
100k
10µF
PGOOD
RUN
COMP
INTV
DRV
f
TRACK/SS
V
SET
D
SGND
CC
CC
V
IN
LTM4612
PLLIN
PGND
MARG0
MARG1
CLOCK SYNC
MPGM
V
FCB
OUT
V
FB
392k
5% MARGIN
MARGIN
CONTROL
4612 TA01
5.23k
100pF
C
DC/DC µModule Regulator
OUT
DescripTion
The LTM
input and output, 5A switching 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 LTM4612
supports an output voltage range of 3.3V to 15V, set by a
single 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 Figures 4 and 8.
Furthermore, the DC/DC µModule
with an external clock to reduce undesirable frequency
harmonics and allow PolyPhase
currents.
The LTM4612 is offered in a space saving and thermally
enhanced 15mm × 15mm × 2.8mm LGA package, which
enables utilization of unused space on the bottom of PC
boards for high density point-of-load regulation. The
LTM4612 is Pb-free and RoHS compliant.
L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and µModule are registered
trademarks of Linear Technology Corporation. All other trademarks are the property of their
respective owners.
V
12V
5A
OUT
®
4612 is a complete, ultralow noise, high voltage
Efficiency vs Load Current at 12V Output
100
95
90
85
80
75
70
65
60
55
50
0
36V
1
OUTPUT CURRENT (A)
IN
Ultralow Noise
2
, 15V
®
3
operation for high load
®
24V
28V
36V
can be synchronized
IN
IN
IN
4
LTM4612
12V
12V
12V
OUT
4612 TA01b
OUT
OUT
OUT
5
, 5A,
4612fa


Related parts for LTM4612MPV#PBF

LTM4612MPV#PBF Summary of contents

Page 1

... PC boards for high density point-of-load regulation. The LTM4612 is Pb-free and RoHS compliant. L, LT, LTC, LTM, Linear Technology, the Linear logo, PolyPhase and µModule are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. ...

Page 2

... LTM4612IV#PBF LTM4612IV#PBF LTM4612MPV#PBF LTM4612MPV#PBF Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ This product is only offered in trays. For more information go to: http://www.linear.com/packaging/ ...

Page 3

T (front page) configuration. SYMBOL PARAMETER I Input Supply Bias Current Q(VIN) I Input Supply Current S(VIN) V Internal V Voltage INTVCC CC Output Specifications I Output Continuous Current Range OUT(DC) ...

Page 4

LTM4612 elecTrical characTerisTics operating temperature range, otherwise specifications are at T (front page) configuration. SYMBOL PARAMETER I Current into DRV Pin DRVCC CC R Resistor Between V and V FBHI OUT V Margin Reference Voltage MPGM MARG0, ...

Page 5

Typical perForMance characTerisTics Efficiency vs Load Current with 3.3V (FCB = 0) OUT 100 3.3V IN OUT 60 12V 3.3V IN OUT 24V 3. OUT 36V 3.3V IN OUT 50 ...

Page 6

LTM4612 Typical perForMance characTerisTics Start-Up with 24V to 12V at IN OUT –55°C OUT A V OUT 5V/DIV I IN 1A/DIV 500µs/DIV 4612 G10 SOFT-START CAPACITOR: 3.9nF 10µF CERAMIC CAPACITORS AND IN ...

Page 7

FuncTions (See Package Description for Pin Assignments) V (Bank 1): Power Input Pins. Apply input voltage be- IN tween these pins and PGND pins. Recommend placing input decoupling capacitance directly between V and PGND pins. PGND (Bank 2): Power ...

Page 8

LTM4612 pin FuncTions V (Pin F12): The Negative Input of the Error Amplifier. FB Internally, this pin is connected to V sion resistor. Different output voltages can be programmed with an additional resistor between the V See the Applications Information ...

Page 9

DiagraM > 1. < OFF OUT MAX = 5V RUN PGOOD COMP INTERNAL COMP SGND MARG1 MARG0 SET FB 5.23k 93.1k FCB 10k MPGM TRACK/SS PLLIN C SS 4.7µF INTV ...

Page 10

LTM4612 operaTion Power Module Description The LTM4612 is a standalone nonisolated switching mode DC/DC power supply. It can deliver output current with some external input and output capacitors. This module provides precisely regulated output voltage programmable via ...

Page 11

The typical LTM4612 application circuit is shown in Figure 18. External component selection is primarily determined by the maximum load current and output voltage. Refer to Table 2 for specific external capacitor requirements for a particular application. V ...

Page 12

LTM4612 applicaTions inForMaTion If lower output ripple is required, the operating frequency f can be increased by adding a resistor R pin and SGND, as shown in Figure 19. V OUT − ...

Page 13

Output Capacitors The LTM4612 is designed for low output voltage ripple. The bulk output capacitors defined as C with low enough effective series resistance (ESR) to meet the output voltage ripple and transient requirements. C can be low ...

Page 14

LTM4612 applicaTions inForMaTion Fault Conditions: Current Limit and Overcurrent Foldback LTM4612 has a current mode controller, which inherently limits the cycle-by-cycle inductor current not only in steady state operation, but also in transient. To further limit current in the event ...

Page 15

... COMP Pin The pin is the external compensation pin. The module has already been internally compensated for most output voltages. An Excel design tool from Linear Technology will be provided for more control loop optimization. FCB Pin The FCB pin determines whether the bottom MOSFET remains on when current reverses in the inductor ...

Page 16

LTM4612 applicaTions inForMaTion tion. When the cooling is limited, proper output current derating is necessary, considering ambient temperature, airflow, input/output condition, and the need for increased reliability. The power loss curves in Figures 9 and 10 can be used in ...

Page 17

AMBIENT TEMPERATURE (°C) Figure 15. No Heat Sink with 36V IN Table 2. Output Voltage Response Versus Component Matrix (Refer to ...

Page 18

LTM4612 applicaTions inForMaTion Table 4. 5V Output DERATING CURVE V (V) IN Figures 18 Figures 18 Figures 18 Figures 10, 13 Figures 10, 13 Figures 10, 13 Heat ...

Page 19

PULL-UP SUPPLY ≤ 22V TO 36V R4 R5 100k 10µF 50V CERAMIC PULL-UP SUPPLY ≤ 36V C IN 10µF 50V CERAMIC EXTERNAL 5V SUPPLY IMPROVES EFFICIENCY— ESPECIALLY ...

Page 20

LTM4612 applicaTions inForMaTion PULL-UP SUPPLY ≤ 26V TO 36V R4 100k R fSET 806k 10µF 50V CERAMIC Figure 20. 26V to 36V V IN 20V TO 36V C2 10µF 50V + C5 100µF 2-PHASE ...

Page 21

V IN 22V TO 36V + 2-PHASE OSCILLATOR + V OUT1 GND OUT2 C11 R5 0.1µF 118k SET MOD LTC6908-1 PULL-UP SUPPLY ≤ 10µF 50V PLLIN 100k 100k D IN PGOOD V ...

Page 22

LTM4612 applicaTions inForMaTion 36V + 2-PHASE OSCILLATOR + V OUT1 GND OUT2 C11 R5 0.1µF 200k SET MOD LTC6908-1 Figure 23. 2-Phase, 5V and 3. Design with 500kHz Frequency  5V C1 10µF 50V ...

Page 23

DescripTion PIN NAME ...

Page 24

LTM4612 package DescripTion  Z Z bbb 6.9850 5.7150 4.4450 3.1750 1.9050 0.6350 0.0000 0.6350 1.9050 3.1750 4.4450 5.7150 6.9850 4612fa ...

Page 25

... Changes to Figures 18, 19, 20, 21, 22 Changes to Related Parts Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representa- tion that the interconnection of its circuits as described herein will not infringe on existing patent rights. LTM4612 ...

Page 26

... LGA Package OUT ≤ 5V 6.25mm × 6.25mm × 2.3mm LGA Package OUT ≤ 5V 6.25mm × 11.25mm × 2.8mm LGA Package OUT ≤ 36V; 9mm × 11.25mm × 2.8mm LGA Package IN LT 0310 REV A • PRINTED IN USA  LINEAR TECHNOLOGY CORPORATION 2008 4612fa ...

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