Datasheet Linear Technology LTM4611

Manufacturer	Linear Technology
Series	LTM4611

Ultralow VIN, 15A DC/DC µModule (Power Module) Regulator

Datasheets

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PDF, 493 Kb, Language: en, File uploaded: Sep 24, 2017, Pages: 30
Ultralow VIN, 15A DC/DC µModule Regulator

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Packaging

	LTM4611EV#PBF	LTM4611IV#PBF
N	1	2
Package	15mm × 15mm × 4.32mm LGA Package Outline Drawing	15mm × 15mm × 4.32mm LGA Package Outline Drawing
Package Code	LGA	LGA
Package Index	05-08-1777	05-08-1777
Pin Count	133	133

Parametrics

Parameters / Models	LTM4611EV#PBF	LTM4611IV#PBF
Architecture	Constant On-Time Current Mode	Constant On-Time Current Mode
Demo Boards	DC1588A	DC1588A
Design Tools	LTspice File,LTpowerCAD Model	LTspice File,LTpowerCAD Model
Export Control	no	no
Features	Differential Remote Sense, PolyPhase, External Synchronization, Burst Mode, Tracking, Power Good	Differential Remote Sense, PolyPhase, External Synchronization, Burst Mode, Tracking, Power Good
Frequency, kHz	835	835
Frequency Sync Range	360kHz to 710kHz	360kHz to 710kHz
Integrated Inductor	yes	yes
Ishutdown, µA	1.1	1.1
Isupply, mA	70	70
Max Phases	4	4
Monolithic	yes	yes
Number of Outputs	1	1
Operating Temperature Range, °C	0 to 85	-40 to 85
Output Current, A	15	15
Polyphase	yes	yes
Switch Current, A	30	30
Synchronous	yes	yes
Topology	Buck	Buck
Topology 1	Buck	Buck
Vin Max, V	5.5	5.5
Vin Min, V	1.5	1.5
Vout Max, V	5	5
Vout Maximum	5V	5V
Vout Min, V	0.8	0.8
Vswitch Max, V	5	5

Eco Plan

	LTM4611EV#PBF	LTM4611IV#PBF
RoHS	Compliant	Compliant

Design Notes

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Step-Down uModule Regulator Produces 15A Output from Inputs Down to 1.5V &mdash DN488
PDF, 1.1 Mb, File published: Jan 31, 2011
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Step-Down ВµModule Regulator Produces 15A Output from
Inputs Down to 1.5VвЂ”No Bias Supply Required
1.5V to 5.5V Input, 0.8V to 5V Output from a 15mm Г— 15mm Г— 4.32mm LGA Package
Design Note 488
Alan Chern and Jason Sekanina
15A High Efficiency Output from a Low Input Voltage
The LTMВ®4611 is a switch mode, step-down DC/DC ВµModule В®
regulator in a compact 15mm Г— 15mm Г— 4.32mm LGA surface
mount package. The switching controller, MOSFETs, inductor
and supporting components are housed in the package. With
a built-in differential remote sense amplifier, the LTM4611 can
tightly regulate its output voltage from 0.8V to within 300mV of
VIN and deliver 15A output efficiently from 1.5V to 5.5V input. VIN
1.8V TO
5.5V
CSS
0.1ВµF 680ВµF
18mв„¦ ESR 2Г— 47ВµF
RUN SGND QR code 03/11/488 Download a QR code reader application to scan
and read QR codes from your phone. GND VOSNS+
VOSNSвЂ“
RSET
69kв„¦ Figure 1. 1.8VIN to 5.5VIN to 1.5VOUT …

Articles

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POL uModule DC/DC Converter Operates from Inputs Down to 1.5V, Delivering Up to 15A Output, Without an Auxiliary Bias Supply &mdash LT Journal
PDF, 986 Kb, File published: Oct 27, 2010
Extract from the document
POL ВµModule DC/DC Converter Operates from Inputs Down
to 1.5V, Delivering Up to 15A Output, Without an Auxiliary
Bias Supply
Jason Sekanina and Alan Chern The LTM4611 is a low profile ВµModule step-down switch mode DC/DC converter in a
compact 15mm Г— 15mm Г— 4.32mm LGA surface mount package. The switching controller,
MOSFETs, inductor and support components are housed in the package, so design is
reduced to selecting a few external components. The LTM4611 operates from an input
voltage of 1.5V to 5.5V (6V, absolute maximum), making it suitable for a variety of power
architecturesвЂ”particularly data storage and RAID (redundant array of independent disks)
systems, ATCA (advanced telecommunications computing architecture) and networking
cardsвЂ”where one or several commonly bussed voltages are 5V, 3.3V, 2.8V, and/or 2.5V.
While it is uncommon to see bus voltages
lower than 2.5V due to the distribution
losses (voltage drops) associated with
relatively high bus currents, the ability
of the LTMВ®4611 to deliver full power to
its load from a 1.5V input is particularly
advantageous in applications where load
voltage(s) must be precisely regulated
even as momentary or sustained electrical events induce input-bus line-sag.
Transient events on the system bus can
occur normally due to the operation of
motors, transducers, defibrillators or an …

Model Line

Series: LTM4611 (2)

LTM4611EV#PBF LTM4611IV#PBF

Manufacturer's Classification

µModule Solutions > µModule Regulators > µModule Buck Regulators