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LT8390EUFD#PBF

Description
DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin QFN EP Tube
File Size2MB,32 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric Compare View All

LT8390EUFD#PBF Overview

DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin QFN EP Tube

LT8390EUFD#PBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
Number of Outputs1
TopologyStep Up|Step Down
Output Voltage (V)1 to 60
Maximum Switching Frequency (kHz)650
Minimum Input Voltage (V)4
Maximum Input Voltage (V)60
Operating Supply Voltage (V)4 to 60
Maximum Supply Current (mA)2.1(Typ)
Typical Quiescent Current (mA)2.1
Typical Gate Driver Pull Up Resistance (Ohm)2.6/3.2
Typical Gate Driver Pull Down Resistance (Ohm)1.4/1.2
Minimum Switching Frequency (kHz)150
Synchronous RectifierYes
Synchronous ClockNo
ProgrammabilityNo
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)125
Supplier Temperature GradeExtended
PackagingTube
Supplier PackageQFN EP
Pin Count28
Standard Package NameQFN
MountingSurface Mount
Package Height0.75(Max)
Package Length5
Package Width4
PCB changed28
Lead ShapeNo Lead
FEATURES
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LT8390
60V Synchronous 4-Switch
Buck-Boost Controller
with Spread Spectrum
DESCRIPTION
The
LT
®
8390
is a synchronous 4-switch buck-boost DC/DC
controller that regulates output voltage, input or output
current from an input voltage above, below, or equal to
the output voltage. The proprietary peak-buck/peak-boost
current mode control scheme allows adjustable and syn-
chronizable 150kHz to 650kHz fixed frequency operation,
or internal ±15% triangle spread spectrum frequency
modulation for low EMI. With a 4V to 60V input voltage
range, 0V to 60V output voltage capability, and seamless low
noise transitions between operation regions, the LT8390
is ideal for voltage regulator, battery and supercapacitor
charger applications in automotive, industrial, telecom,
and even battery-powered systems.
The LT8390 provides input or output current monitor and
power good flag. Fault protection is also provided to detect
output short-circuit condition, during which the LT8390
retries, latches off, or keeps running.
All registered trademarks and trademarks are the property of their respective owners.
n
4-Switch Single Inductor Architecture Allows V
IN
Above, Below or Equal to V
OUT
Synchronous Switching: Up to 98% Efficiency
Proprietary Peak-Buck Peak-Boost Current Mode
Wide V
IN
Range: 4V to 60V
±1.5% Output Voltage Accuracy: 1V ≤ V
OUT
≤ 60V
±3% Input or Output Current Accuracy with Monitor
Spread Spectrum Frequency Modulation for Low EMI
High Side PMOS Load Switch Driver
Integrated Bootstrap Diodes
No Top MOSFET Refresh Noise in Buck or Boost
Adjustable and Synchronizable: 150kHz to 650kHz
V
OUT
Disconnected from V
IN
During Shutdown
Available in 28-Lead TSSOP with Exposed Pad and
28-Lead QFN (4mm × 5mm)
AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
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Automotive, Industrial, Telecom Systems
High Power Battery-Powered System
TYPICAL APPLICATION
98% Efficient 48W (12V 4A) Miniature Buck-Boost Voltage Regulator
V
IN
4V TO 56V
4m
22µF
63V
×2
4.7µF
100V
×2
0.1µF
6uH
0.1µF
10µF
25V
×2
120µF
16V
15m
V
OUT
12V
4A
120µF
16V
100
98
1µF
EFFICIENCY (%)
96
94
92
90
88
86
0
10
20
30
40
INPUT VOLTAGE (V)
SW1 LSP
BST1
BG1
TG1
LSN
SW2
BST2
BG2
GND
TG2
Efficiency vs V
IN
383k
1µF
V
IN
EN/UVLO
LT8390
V
OUT
ISP
ISN
FB
SYNC/SPRD
INTV
CC
165k
ISMON
LOADTG
TEST
I
OUT
LIMIT 6.7A
ISMON
CTRL
LOADEN
0.47µF
V
REF
SS
0.1µF
100pF
V
C
27k
4.7nF
100k
SSFM OFF
SSFM ON
4.7µF
100k
PGOOD
8390 TA01a
9.09k
I
OUT
= 4A
50
60
PGOOD
RT
8390 TA01b
100k
400kHz
Document Feedback
For more information
www.analog.com
1
Rev. C

LT8390EUFD#PBF Related Products

LT8390EUFD#PBF LT8390EFE#PBF LT8390EFE#TRPBF LT8390EUFD#TRPBF LT8390IFE#PBF LT8390IFE#TRPBF LT8390IUFD#PBF LT8390IUFD#TRPBF
Description DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin QFN EP Tube DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin TSSOP EP Tube DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin TSSOP EP T/R DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin QFN EP T/R DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin TSSOP EP Tube DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin TSSOP EP T/R DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-Pin QFN EP Tube DC/DC Cntrlr Single-OUT Step Down/Step Up 650kHz Automotive 28-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
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
Number of Outputs 1 1 1 1 1 1 1 1
Topology Step Up|Step Down Step Down|Step Up Step Down|Step Up Step Down|Step Up Step Down|Step Up Step Down|Step Up Step Up|Step Down Step Down|Step Up
Output Voltage (V) 1 to 60 1 to 60 1 to 60 1 to 60 1 to 60 1 to 60 1 to 60 1 to 60
Maximum Switching Frequency (kHz) 650 650 650 650 650 650 650 650
Minimum Input Voltage (V) 4 4 4 4 4 4 4 4
Maximum Input Voltage (V) 60 60 60 60 60 60 60 60
Operating Supply Voltage (V) 4 to 60 4 to 60 4 to 60 4 to 60 4 to 60 4 to 60 4 to 60 4 to 60
Maximum Supply Current (mA) 2.1(Typ) 2.1(Typ) 2.1(Typ) 2.1(Typ) 2.1(Typ) 2.1(Typ) 2.1(Typ) 2.1(Typ)
Typical Quiescent Current (mA) 2.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1
Typical Gate Driver Pull Up Resistance (Ohm) 2.6/3.2 2.6/3.2 2.6/3.2 2.6/3.2 2.6/3.2 2.6/3.2 2.6/3.2 2.6/3.2
Typical Gate Driver Pull Down Resistance (Ohm) 1.4/1.2 1.4/1.2 1.4/1.2 1.4/1.2 1.4/1.2 1.4/1.2 1.4/1.2 1.4/1.2
Minimum Switching Frequency (kHz) 150 150 150 150 150 150 150 150
Synchronous Rectifier Yes Yes Yes Yes Yes Yes Yes Yes
Synchronous Clock No No No No No No No No
Programmability No No No No No No No No
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 Extended Extended Extended Extended Industrial Industrial Industrial Industrial
Packaging Tube Tube Tape and Reel Tape and Reel Tube Tape and Reel Tube Tape and Reel
Supplier Package QFN EP TSSOP EP TSSOP EP QFN EP TSSOP EP TSSOP EP QFN EP QFN EP
Pin Count 28 28 28 28 28 28 28 28
Standard Package Name QFN SOP SOP QFN SOP SOP QFN QFN
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.75(Max) 1.05(Max) 1.05(Max) 0.75(Max) 1.05(Max) 1.05(Max) 0.75(Max) 0.75(Max)
Package Length 5 9.8(Max) 9.8(Max) 5 9.8(Max) 9.8(Max) 5 5
Package Width 4 4.5(Max) 4.5(Max) 4 4.5(Max) 4.5(Max) 4 4
PCB changed 28 28 28 28 28 28 28 28
Lead Shape No Lead Gull-wing Gull-wing No Lead Gull-wing Gull-wing No Lead No Lead
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