LTC3525DESC6-3.3#TRMPBF datasheet, PDF

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LTC3525DESC6-3.3#TRMPBF: DescriptionConv DC-DC 0.5V to 4.5V Synchronous Step Up Single-Out 3.3V 0.4A 6-Pin SC-70 T/R; File Size471KB，14 Pages; ManufacturerADI; Websitehttps://www.analog.com

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LTC3525DESC6-3.3#TRMPBF Overview

Conv DC-DC 0.5V to 4.5V Synchronous Step Up Single-Out 3.3V 0.4A 6-Pin SC-70 T/R

LTC3525DESC6-3.3#TRMPBF 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
Type	Synchronous Step Up
Output Type	Fixed
Switching Regulator	Yes
Number of Outputs	1
Output Voltage (V)	3.3
Maximum Output Current (A)	0.4
Minimum Input Voltage (V)	0.5
Maximum Input Voltage (V)	4.5
Typical Quiescent Current (uA)	7
Efficiency (%)	95
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-323
Supplier Package	SC-70
Mounting	Surface Mount
Package Height	1(Max)
Package Length	2.2(Max)
Package Width	1.35(Max)
PCB changed	6
Lead Shape	Gull-wing

User Manual

【User Guides】DC879A - Demo Manual

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LTC3525D-3.3

400mA Micropower

Synchronous Step-Up DC/DC

Converter with Pass Through Mode

FeaTures

DescripTion

The

LTC

3525D-3.3

is a high efficiency synchronous step-

up DC/DC converter that can start up with an input as low

as 0.85V. It offers a compact, high efficiency alternative to

charge pumps in single cell or dual cell alkaline or Li-Ion

applications. Only three small external components are re-

quired. The LTC3525D features a fixed output voltage of 3.3V.

In shutdown, V

OUT

is connected to V

through the inductor.

The device includes a 0.5Ω N-channel MOSFET switch and

a 0.8Ω P-channel synchronous rectifier. Peak switch current

ranges from 150mA to 400mA, depending on load, providing

enhanced efficiency. Quiescent current is an ultralow 7µA,

maximizing battery life in portable applications.

Other features include anti-ringing control and thermal

shutdown. The LTC3525D is available in a tiny 6-Lead

SC70 package.

List of LTC3525 Options

PART

NAME

LTC3525-3

LTC3525-3.3

LTC3525-5

LTC3525D-3.3

LTC3525L-3

INPUT START-UP

VOLTAGE

0.85V

0.7V

OUTPUT

VOLTAGE

3.3V

OUT

STATUS IN

SHUTDOWN MODE

Output Disconnect

Pass Through Mode

Output Disconnect

OUT

Connected to V

in Shutdown

Up to 95% Efficiency

0.85V Minimum Input Start-Up Voltage

Fixed Output Voltage of 3.3V

Delivers 60mA at 3.3V from a 1V Input,

or 140mA at 3.3V from a 1.8V Input

Burst Mode

Operation: I

= 7µA

Range: 0.5V to 4.5V

Only Three External Components

> V

OUT

Operation

Anti-Ringing Control

Short-Circuit and Overtemperature Protection

Very Low Profile of 1mm

Tiny 6-Lead SC70 Package

applicaTions

MP3 Players

Portable Instruments

Glucose Meters

Digital Cameras

LT, LTC, LTM, Burst Mode, Linear Technology and the Linear logo are registered trademarks

and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the

property of their respective owners. Patents pending.

Typical applicaTion

L1*

10µH

100

LTC3525D-3.3

PASS THROUGH ON

1µF

SHDN

GND

OUT

GND

OUT

3.3V

140mA

10µF

EFFICIENCY (%)

0.01

LTC3525D-3.3 Efficiency and

Power Loss vs Load Current

100

EFFICIENCY

POWER LOSS (mW)

1.8V TO 3.2V

POWER LOSS

0.1

= 3V

= 2.4V

= 1.2V

0.1

LOAD (mA)

100

*MURATA LQH32CN100K53

3525 TA01

0.01

1000

LT3525 • TA02

3525d33fb

For more information

www.linear.com/LTC3525D3.3

LTC3525DESC6-3.3#TRMPBF Related Products

	LTC3525DESC6-3.3#TRMPBF	LTC3525DESC6-3.3#PBF	LTC3525DESC6-3.3#TRPBF
Description	Conv DC-DC 0.5V to 4.5V Synchronous Step Up Single-Out 3.3V 0.4A 6-Pin SC-70 T/R	Conv DC-DC 0.5V to 4.5V Synchronous Step Up Single-Out 3.3V 0.4A 6-Pin SC-70	Conv DC-DC 0.5V to 4.5V Synchronous Step Up Single-Out 3.3V 0.4A 6-Pin SC-70 T/R
EU restricts the use of certain hazardous substances	Compliant	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99
Part Status	Active	Unconfirmed	Active
HTS	8542.39.00.01	8542.39.00.01	8542.39.00.01
Type	Synchronous Step Up	Synchronous Step Up	Synchronous Step Up
Output Type	Fixed	Fixed	Fixed
Switching Regulator	Yes	Yes	Yes
Number of Outputs	1	1	1
Output Voltage (V)	3.3	3.3	3.3
Maximum Output Current (A)	0.4	0.4	0.4
Minimum Input Voltage (V)	0.5	0.5	0.5
Maximum Input Voltage (V)	4.5	4.5	4.5
Typical Quiescent Current (uA)	7	7	7
Efficiency (%)	95	95	95
Minimum Operating Temperature (°C)	-40	-40	-40
Maximum Operating Temperature (°C)	85	85	85
Supplier Temperature Grade	Extended	Extended	Extended
Pin Count	6	6	6
Standard Package Name	SOT-323	SOT-323	SOT-323
Supplier Package	SC-70	SC-70	SC-70
Mounting	Surface Mount	Surface Mount	Surface Mount
Package Height	1(Max)	1(Max)	1(Max)
Package Length	2.2(Max)	2.2(Max)	2.2(Max)
Package Width	1.35(Max)	1.35(Max)	1.35(Max)
PCB changed	6	6	6
Lead Shape	Gull-wing	Gull-wing	Gull-wing
Packaging	Tape and Reel	-	Tape and Reel
Typical Switch Current (A)	-	0.45	0.45

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