LTC3886IUKG#PBF datasheet, PDF

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LTC3886IUKG#PBF: DescriptionDC/DC Cntrlr Dual-OUT Step Down 46-Pin QFN EP Tube; File Size1MB，122 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC3886IUKG#PBF Overview

DC/DC Cntrlr Dual-OUT Step Down 46-Pin QFN EP Tube

LTC3886IUKG#PBF Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
Number of Outputs	2
Topology	Step Down
Output Voltage (V)	0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8
Maximum Switching Frequency (kHz)	750
Minimum Input Voltage (V)	4.5
Maximum Input Voltage (V)	60
Operating Supply Voltage (V)	4.5 to 60
Maximum Supply Current (mA)	26(Typ)
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	125
Supplier Temperature Grade	Industrial
Packaging	Tube
Pin Count	46
Standard Package Name	QFN
Supplier Package	QFN EP
Mounting	Surface Mount
Package Height	0.75(Max)
Package Length	8
Package Width	7
PCB changed	46
Lead Shape	No Lead

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FEATURES

LTC3886/LTC3886-1

60V Dual Output

Step-Down Controller with Digital

Power System Management

DESCRIPTION

The

LTC

3886/LTC3886-1

is a dual PolyPhase DC/DC syn-

chronous step-down switching regulator controller with

C-based

PMBus compliant serial interface.

This controller

employs a constant-frequency, current-mode architecture,

with high voltage input and output capability along with

programmable loop compensation. The LTC3886 is sup-

ported by the

LTpowerPlay

software development tool with

graphical user interface (GUI).

The EXTV

pin supports voltages up to 14V allowing for

optimized circuit efficiency and die temperature, and for

the controller output to supply the chip power. Switching

frequency, output voltage, and device address can be

programmed both by digital interface as well as external

configuration resistors. Parameters can be set via the

digital interface or stored in EEPROM. Both outputs have

an independent power good indicator and

FAULT

function.

The LTC3886 can be configured for discontinuous (pulse-

skipping) mode or continuous inductor current mode.

The LTC3886-1 also includes a sequencing off feature to

discharge very large output capacitors.

All registered trademarks and trademarks are the property of their respective owners. Protected

by U.S. Patents including 5481178, 5705919, 5929620, 6100678, 6144194, 6177787, 5408150,

6580258, 6304066, 7420359, 8786268 Patent Pending. Licensed under U.S. Patent 7000125

and other related patents worldwide.

PMBus/I

C Compliant Serial Interface

Telemetry Read-Back Includes V , I , V

IN IN OUT

, I

OUT

Temperature and Faults

Programmable Voltage, Current Limit, Digital

Soft-Start/Stop, Sequencing, Margining, OV/UV/OC,

Frequency, and Control Loop Compensation

Output Error Less Than ±0.5% Over Temperature

Integrated 16-Bit ADC and 12-Bit DAC

Integrated High Side Current Sense Amplifier

Internal EEPROM with ECC and Fault Logging

Integrated N-Channel MOSFET Gate Drivers

Power Conversion

Wide V Range: 4.5V to 60V

OUT0

, V

OUT1

Range: 0.5V to 13.8V

Analog Current Mode Control

Accurate PolyPhase

Current Sharing for

Up to 6 Phases (100kHz to 750kHz)

Available in a 52-Lead (7mm × 8mm) QFN Package

APPLICATIONS

Telecom, Datacom, and Storage Systems

Industrial and Point of Load Applications

TYPICAL APPLICATION

10µF

0.1µF

3.1µH

INTV

IN+

IN–

TG0

BOOST0

SW0

BG0

PMBus

INTERFACE

TG1

BOOST1

SW1

0.1µF

6.82µH

100

7.5k

EFFICIENCY (%)

FAULT MANAGEMENT

TO/FROM

OTHER ADI DEVICES

0.22µF 7.5k

OUT1

12V

15A

1µF

0.01

EFFICIENCY

POWER LOSS

0.1

LOAD CURRENT (A)

1µF

10µF

18V TO 48V

Efficiency and Power Loss

vs Load Current

= 48V

OUT

= 12V

= 150kHz

100

POWER LOSS (W)

6.81k

1µF

BG1

LTC3886*

FAULT0

SDA

FAULT1

SCL

PGOOD0

ALERT

PGOOD1

RUN0

RUN1 SHARE_CLK

0.22µF

SENSE0+

SENSE1+

SENSE0–

SENSE1–

EXTV

SENSE0+

SENSE1

SENSE0–

TSNS0

TSNS1

TH0

TH1

THR0

THR1

DD33

GND V

DD25

1µF

6.81k

OUT0

15A

530µF

10nF

4700pF

220pF

2200pF

220pF

*SOME DETAILS OMITTED FOR CLARITY

10nF

530µF

3883 TA01b

3886 TA01a

Rev F

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Description	DC/DC Cntrlr Dual-OUT Step Down 46-Pin QFN EP Tube	DC/DC Cntrlr Dual-OUT Step Down 46-Pin QFN EP Tube	DC/DC Cntrlr Dual-OUT Step Down 46-Pin QFN EP T/R	DC/DC Cntrlr Dual-OUT Step Down 750kHz 46-Pin QFN EP Tube	DC/DC Cntrlr Dual-OUT Step Down 750kHz 46-Pin QFN EP T/R	DC/DC Cntrlr Dual-OUT Step Down 46-Pin QFN EP T/R	DC/DC Cntrlr Dual-OUT Step Down 750kHz 46-Pin QFN EP Tube	DC/DC Cntrlr Dual-OUT Step Down 750kHz 46-Pin QFN EP T/R
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Active	Active	Active	Active	Active	Active	Active
Number of Outputs	2	2	2	2	2	2	2	2
Topology	Step Down	Step Down	Step Down	Step Down	Step Down	Step Down	Step Down	Step Down
Output Voltage (V)	0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8	0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8	0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8	0.5 to 13.8	0.5 to 13.8	0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8\|0.5 to 13.8	0.5 to 13.8	0.5 to 13.8
Maximum Switching Frequency (kHz)	750	750	750	750	750	750	750	750
Minimum Input Voltage (V)	4.5	4.5	4.5	4.5	4.5	4.5	4.5	4.5
Maximum Input Voltage (V)	60	60	60	60	60	60	60	60
Operating Supply Voltage (V)	4.5 to 60	4.5 to 60	4.5 to 60	4.5 to 60	4.5 to 60	4.5 to 60	4.5 to 60	4.5 to 60
Maximum Supply Current (mA)	26(Typ)	26(Typ)	26(Typ)	26(Typ)	26(Typ)	26(Typ)	26(Typ)	26(Typ)
Minimum Operating Temperature (°C)	-40	-40	-40	-40	-40	-40	-40	-40
Maximum Operating Temperature (°C)	125	125	125	125	125	125	125	125
Supplier Temperature Grade	Industrial	Extended	Extended	Extended	Extended	Industrial	Industrial	Industrial
Packaging	Tube	Tube	Tape and Reel	Tube	Tape and Reel	Tape and Reel	Tube	Tape and Reel
Pin Count	46	46	46	46	46	46	46	46
Standard Package Name	QFN	QFN	QFN	QFN	QFN	QFN	QFN	QFN
Supplier Package	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP	QFN EP
Mounting	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package Height	0.75(Max)	0.75(Max)	0.75(Max)	0.75(Max)	0.75(Max)	0.75(Max)	0.75(Max)	0.75(Max)
Package Length	8	8	8	8	8	8	8	8
Package Width	7	7	7	7	7	7	7	7
PCB changed	46	46	46	46	46	46	46	46
Lead Shape	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead	No Lead

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