LTC3405AES6-1.5#TR datasheet, PDF

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LTC3405AES6-1.5#TR: DescriptionIC reg buck sync 1.5V sot23-6; CategoryPower/power management The power supply circuit; File Size22KB，1 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC3405AES6-1.5#TR Overview

IC reg buck sync 1.5V sot23-6

LTC3405AES6-1.5#TR Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Maker	Linear ( ADI )
Parts packaging code	SOT
package instruction	VSSOP, TSOP6,.11,37
Contacts	6
Manufacturer packaging code	S6
Reach Compliance Code	_compli
ECCN code	EAR99
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	5.5 V
Minimum input voltage	2.5 V
Nominal input voltage	3.6 V
JESD-30 code	R-PDSO-G6
JESD-609 code	e0
length	2.9 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	6
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output current	0.63 A
Package body material	PLASTIC/EPOXY
encapsulated code	VSSOP
Encapsulate equivalent code	TSOP6,.11,37
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235
Certification status	Not Qualified
Maximum seat height	1 mm
surface mount	YES
Switch configuration	BUCK
Maximum switching frequency	1800 kHz
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Tin/Lead (Sn/Pb)
Terminal form	GULL WING
Terminal pitch	0.95 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	20
width	1.625 mm

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HIGH EFFICIENCY, THINSOT™ SYNCHRONOUS BUCK REGULATOR

DEMO BOARD QUICK START GUIDE DC480

LTC3405A

DESCRIPTION

Demonstration circuit DC480 is a constant-frequency

step-down converter that uses the LTC3405A monolithic

synchronous buck regulator. The DC480 has an input

voltage range of 2.5V to 5.5V, and is capable of deliver-

ing up to 300mA of output current at 3.0V minimum in-

put voltage. In Burst Mode™ operation, the DC supply

current is typically only 25µA at no load, and less than

1µA in shutdown. In switching -noise sensitive applica-

tions, grounding the MODE pin enables Burst Mode™

operation. These features, plus the LTC3405A coming in

a tiny 6-Pin SOT-23 package and having an operating

frequency of 1.5 MHz (allowing the exclusive use of low

profile surface mount components), make the DC480

demo board an ideal circuit for use in battery-powered,

hand-held applications.

Gerber files for this circuit are

available. Call the LTC Factory.

QUICK START

The DC480 demonstration board is easy to set up to

evaluate the performance of the LTC3405A. Refer to Fig-

ure 1 for proper measurement equipment setup.

When the board is right-side up (the title is

legible at the top of the board), the output voltage tur-

ret is on the left side of the board, and the input volt-

age turret is on the right side of the board. Set up the

circuit appropriately.

NOTE:

Do not hot-plug V

or increase V

over the

rated maximum supply voltage of 6V, or th e part may

be damaged.

NOTE:

Connect

the load between the V

OUT

and GND termi-

nals on the

left side

of the board. Refer to figure 1 for

the proper measurement equipment setup.

Select

Please follow the procedure outlined below for proper

operation.

Connect

the input power supply to the V

and GND

terminals on the

right-side

of the board.

the desired operating mode using JP1. To se-

lect pulse-skipping mode, tie the MODE pin to V

inserting the jumper into the lower position. Inserting

the jumper into the upper position connects the pin to

ground, which causes Burst Mode™ operation. Do

not leave this pin floating.

shut down the circuit, connect the RUN pin to

ground by inserting the JP2 jumper into the upper

position. Do not leave this pin floating.

Figure 1. Proper Measurement Equipment Setup

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