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LTC1872ES6#TR

Description
DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R
File Size245KB,14 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC1872ES6#TR Overview

DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R

LTC1872ES6#TR 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
TopologyStep Up
Output Voltage (V)0.8 to 36
Maximum Switching Frequency (kHz)560
Minimum Input Voltage (V)2.5
Maximum Input Voltage (V)9.8
Operating Supply Voltage (V)2.5 to 9.8
Maximum Supply Current (mA)0.42
Typical Quiescent Current (mA)0.27
Minimum Switching Frequency (kHz)500
Typical Switching Frequency (kHz)550
Synchronous RectifierNo
Synchronous ClockNo
ProgrammabilityNo
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count6
Standard Package NameSOT-23
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed6
Lead ShapeGull-wing
FeaTures
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LTC1872
Constant Frequency
Current Mode Step-Up
DC/DC Controller in SOT-23
DescripTion
The
LTC
®
1872
is a constant frequency current mode step-
up DC/DC controller providing excellent AC and DC load
and line regulation. The device incorporates an accurate
undervoltage lockout feature that shuts down the LTC1872
when the input voltage falls below 2.0V.
The LTC1872 boasts a ±2.5% output voltage accuracy
and consumes only 270µA of quiescent current. For ap-
plications where efficiency is a prime consideration, the
LTC1872 is configured for Burst Mode operation, which
enhances efficiency at low output current.
In shutdown, the device draws a mere 8µA. The high
550kHz constant operating frequency allows the use of a
small external inductor.
The LTC1872 is available in a small footprint 6-lead
SOT-23.
L,
LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
n
n
n
n
High Efficiency: Over 90%
High Output Currents Easily Achieved
Wide V
IN
Range: 2.5V to 9.8V
V
OUT
Limited Only by External Components
Constant Frequency 550kHz Operation
Burst Mode™ Operation at Light Load
Current Mode Operation for Excellent Line and Load
Transient Response
Low Quiescent Current: 270µA
Shutdown Mode Draws Only 8µA Supply Current
±2.5% Reference Accuracy
Tiny 6-Lead SOT-23 Package
applicaTions
n
n
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Lithium-Ion-Powered Applications
Cellular Telephones
Wireless Modems
Portable Computers
Scanners
Typical applicaTion
R1
0.03
147k
220pF
80.6k
1
2
3
I
TH
/RUN
LTC1872
GND
V
FB
SENSE
NGATE
422k
C1: TAIYO YUDEN CERAMIC EMK325BJ106MNT
C2: MURATA GRM42-2X5R226K6.3
D1: IR10BQ015
L1: MURATA LQN6C4R7M04
M1: IRLMS2002
R1: DALE 0.25W
V
IN
5
4
6
M1
D1
L1
4.7µH
C1
10µF
10V
V
IN
3.3V
100
95
90
Efficiency vs Load Current
V
IN
= 3.3V
V
OUT
= 5V
+
C2
2× 22F
6.3V
V
OUT
5V
1A
EFFICIENCY (%)
85
80
75
70
65
1
10
100
LOAD CURRENT (mA)
1000
1872 TA01b
1872 TA01
Figure 1. LTC1872 High Output Current 3.3V to 5V Boost Converter
1872fa
For more information
www.linear.com/LTC1872
1

LTC1872ES6#TR Related Products

LTC1872ES6#TR LTC1872ES6#PBF LTC1872ES6#TRM LTC1872ES6#TRMPBF (CUT REEL) LTC1872ES6#TRMPBF LTC1872ES6#TRPBF LTC1872ES6
Description DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23 T/R DC/DC Cntrlr Single-OUT Step Up 560kHz 6-Pin TSOT-23
EU restricts the use of certain hazardous substances Not Compliant Compliant Not Compliant Compliant Compliant Compliant Not Compliant
ECCN (US) EAR99 - EAR99 EAR99 EAR99 EAR99 EAR99
Part Status Unconfirmed Unconfirmed LTB Active Active Active Unconfirmed
Number of Outputs 1 1 1 1 1 1 1
Topology Step Up Step Up Step Up Step Up Step Up Step Up Step Up
Output Voltage (V) 0.8 to 36 0.8 to 36 0.8 to 36 0.8 to 36 0.8 to 36 0.8 to 36 0.8 to 36
Maximum Switching Frequency (kHz) 560 560 560 560 560 560 560
Minimum Input Voltage (V) 2.5 2.5 2.5 2.5 2.5 2.5 2.5
Maximum Input Voltage (V) 9.8 9.8 9.8 9.8 9.8 9.8 9.8
Operating Supply Voltage (V) 2.5 to 9.8 2.5 to 9.8 2.5 to 9.8 2.5 to 9.8 2.5 to 9.8 2.5 to 9.8 2.5 to 9.8
Maximum Supply Current (mA) 0.42 0.42 0.42 0.42 0.42 0.42 0.42
Typical Quiescent Current (mA) 0.27 0.27 0.27 0.27 0.27 0.27 0.27
Minimum Switching Frequency (kHz) 500 500 500 500 500 500 500
Typical Switching Frequency (kHz) 550 550 550 550 550 550 550
Synchronous Rectifier No No No No No No No
Synchronous Clock No No No No No No No
Programmability No No No No No No No
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended Extended Extended
Pin Count 6 6 6 6 6 6 6
Standard Package Name SOT-23 SOT SOT-23 SOT SOT SOT SOT-23
Supplier Package TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max)
Package Length 2.9 2.9 2.9 2.9 2.9 2.9 2.9
Package Width 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max)
PCB changed 6 6 6 6 6 6 6
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
Packaging Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel Tape and Reel -
HTS - 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 -
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