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LT8301HS5

Description
DC/DC Cntrlr Single-OUT Flyback Automotive Medical 5-Pin TSOT-23
File Size425KB,24 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LT8301HS5 Overview

DC/DC Cntrlr Single-OUT Flyback Automotive Medical 5-Pin TSOT-23

LT8301HS5 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
SVHCYes
SVHC Exceeds ThresholdYes
Number of Outputs1
TopologyFlyback
Minimum Input Voltage (V)2.7
Maximum Input Voltage (V)42
Operating Supply Voltage (V)2.7 to 42
Maximum Supply Current (mA)0.35(Typ)
Typical Quiescent Current (mA)0.35
Minimum Switching Frequency (kHz)9.4
Synchronous RectifierNo
Synchronous ClockNo
ProgrammabilityYes
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)150
Supplier Temperature GradeExtended
Pin Count5
Standard Package NameSOT-23
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed5
Lead ShapeGull-wing
LT8301
42V
IN
Micropower No-Opto
Isolated Flyback Converter
with 65V/1.2A Switch
FEATURES
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DESCRIPTION
The
LT
®
8301
is a micropower isolated flyback converter.
By sampling the isolated output voltage directly from the
primary-side flyback waveform, the part requires no third
winding or opto-isolator for regulation. The output voltage
is programmed with a single external resistor. Internal
compensation and soft-start further reduce external com-
ponent count. Boundary mode operation provides a small
magnetic solution with excellent load regulation. Low
ripple Burst Mode operation maintains high efficiency at
light load while minimizing the output voltage ripple. A
1.2A, 65V DMOS power switch is integrated along with
all high voltage circuitry and control logic into a 5-lead
ThinSOT™ package.
The LT8301 operates from an input voltage range of 2.7V
to 42V and can deliver up to 6W of isolated output power.
The high level of integration and the use of boundary
and low ripple burst modes result in a simple to use, low
component count, and high efficiency application solution
for isolated power delivery.
All registered trademarks and trademarks are the property of their respective owners. Protected
by U.S. Patents, including 5438499, 7463497, and 7471522.
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2.7V to 42V Input Voltage Range
1.2A, 65V Internal DMOS Power Switch
Low Quiescent Current:
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100µA in Sleep Mode
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350µA in Active Mode
Boundary Mode Operation at Heavy Load
Low-Ripple Burst Mode
®
Operation at Light Load
Minimum Load <0.5% (Typ) of Full Output
V
OUT
Set with a Single External Resistor
No Transformer Third Winding or Opto-Isolator
Required for Regulation
Accurate EN/UVLO Threshold and Hysteresis
Internal Compensation and Soft-Start
Output Short-Circuit Protection
5-Lead TSOT-23 Package
AEC-Q100 Qualified for Automotive Applications
APPLICATIONS
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Isolated Telecom, Automotive, Industrial, Medical
Power Supplies
Isolated Auxiliary/Housekeeping Power Supplies
TYPICAL APPLICATION
Efficiency vs Load Current
2.7V to 36V
IN
/5V
OUT
Micropower Isolated Flyback Converter
V
IN
2.7V TO 36V
3:1
10µF
V
IN
EN/UVLO
LT8301
SW
154k
R
FB
40µH
V
OUT+
5V
6mA TO 0.40A (V
IN
= 5V)
6mA TO 0.70A (V
IN
= 12V)
100µF
6mA TO 1.00A (V
IN
= 24V)
6mA TO 1.15A (V
IN
= 36V)
8301 TA01a
90
85
EFFICIENCY (%)
80
75
70
65
60
V
IN
= 5V
V
IN
= 12V
V
IN
= 24V
V
IN
= 36V
0
0.2
0.4
0.6
0.8
LOAD CURRENT (A)
1.0
1.2
4.4µH
V
OUT
GND
8301 TA01b
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