LTC1872ES6#TRPBF datasheet, PDF

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LTC1872ES6#TRPBF: DescriptionDC/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#TRPBF Overview

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

LTC1872ES6#TRPBF Parametric

Parameter Name	Attribute value
EU restricts the use of certain hazardous substances	Compliant
ECCN (US)	EAR99
Part Status	Active
HTS	8542.39.00.01
Number of Outputs	1
Topology	Step 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 Rectifier	No
Synchronous Clock	No
Programmability	No
Minimum Operating Temperature (°C)	-40
Maximum Operating Temperature (°C)	85
Supplier Temperature Grade	Extended
Packaging	Tape and Reel
Pin Count	6
Standard Package Name	SOT
Supplier Package	TSOT-23
Mounting	Surface Mount
Package Height	0.9(Max)
Package Length	2.9
Package Width	1.75(Max)
PCB changed	6
Lead Shape	Gull-wing

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FeaTures

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.

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.

High Efficiency: Over 90%

High Output Currents Easily Achieved

Wide V

Range: 2.5V to 9.8V

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

Lithium-Ion-Powered Applications

Cellular Telephones

Wireless Modems

Portable Computers

Scanners

Typical applicaTion

0.03

147k

220pF

80.6k

/RUN

LTC1872

GND

SENSE

–

NGATE

422k

C1: TAIYO YUDEN CERAMIC EMK325BJ106MNT

C2: MURATA GRM42-2X5R226K6.3

D1: IR10BQ015

L1: MURATA LQN6C4R7M04

M1: IRLMS2002

R1: DALE 0.25W

4.7µH

10µF

10V

3.3V

100

Efficiency vs Load Current

= 3.3V

OUT

= 5V

2× 22F

6.3V

OUT

EFFICIENCY (%)

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

LTC1872ES6#TRPBF Related Products

	LTC1872ES6#TRPBF	LTC1872ES6#PBF	LTC1872ES6#TR	LTC1872ES6#TRM	LTC1872ES6#TRMPBF (CUT REEL)	LTC1872ES6#TRMPBF	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	Compliant	Compliant	Not Compliant	Not Compliant	Compliant	Compliant	Not Compliant
ECCN (US)	EAR99	-	EAR99	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Unconfirmed	Unconfirmed	LTB	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	SOT	SOT-23	SOT-23	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
HTS	8542.39.00.01	8542.39.00.01	-	8542.39.00.01	-	8542.39.00.01	-
Packaging	Tape and Reel	Tape and Reel	Tape and Reel	Tape and Reel	Tape and Reel	Tape and Reel	-

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