LTC3400BES6#TRM datasheet, PDF

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LTC3400BES6#TRM: DescriptionIC reg bst sync adj 0.85a tsot23; CategoryPower/power management The power supply circuit; File Size24KB，2 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LTC3400BES6#TRM Overview

IC reg bst sync adj 0.85a tsot23

LTC3400BES6#TRM Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	incompatible
Maker	Linear ( ADI )
Parts packaging code	SOT
package instruction	LSSOP,
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
Minimum input voltage	0.65 V
Nominal input voltage	1.2 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	0.85 A
Package body material	PLASTIC/EPOXY
encapsulated code	LSSOP
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	235
Certification status	Not Qualified
Maximum seat height	1.45 mm
surface mount	YES
Switch configuration	BOOST
Maximum switching frequency	1500 kHz
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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DEMO BOARD QUICK START GUIDE DC398

1.2MHZ SINGLE CELL SYNCHRONOUS BOOST CONVERTER

LTC3400

DESCRIPTION

Demonstration Circuit DC398 is a micropower boost

converter that guarantees to start up at 1V. Once it starts

up, the chip is powered from the output; therefore the

input voltage can go lower. DC398 version A uses the

LTC3400ES6; version B uses the LTC3400BES6. The

LTC3400 shifts automatically to low power Burst Mode

T M

operation at light loads; whereas the LTC3400B operates

at a fixed frequency for all loads. Both LTC3400 and

LTC3400B switch at 1.2MHz to allow up to 95% eff i-

ciency with a tiny PCB footprint, which will fit nicely in

many battery powered applications such as GPS receiv-

ers, PDAs, pagers and toys. The converter produces 3.3

volts with current guaranteed up to 90mA from a single

AA cell. When JP1 is closed, the IC is turned off, which

draws less than 1µA current.

On the bench test, an electrolytic capacitor is reco m-

mended at the input posts to dump the voltage ove r-

shoot when first powered up. The spike is caused by the

energy stored in the parasitic inductance of the conne c-

tion wire. In real applications, since the connection to

the source is short and the battery internal impedance

also provides damping, the damping capacitor is usually

not needed. The Vin pin is rated for 6V.

QUICK START PROCEDURE

Refer to Figure 1 for proper equipment setup and follow

the procedure below.

Apply

Attach

a voltage source to the input of the circuit be-

tween the Vin and GND terminals. The circuit is guar-

anteed to start up at input voltages higher than 1V. Do

not apply more than 5 volts. The boost circuit will

only regulate the output voltage when the input volt-

age is less than the output.

a voltmeter or oscilloscope probe between the

Vout and GND terminals of the circuit to monitor the

output.

start the circuit, open the jumper, JP1.

a load to the output. The available output

power depends on the input voltage. Please refer to

the performance summary for maximum current at

different input voltages.

Attach

Figure 1. Proper Measurement Equipment Setup

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