LTC3402EMS#PBF datasheet, PDF - EEWORLD Datasheet

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LTC3402EMS#PBF: DescriptionOutput current: 2A (Switch) Switch operating frequency: 2MHz Output type: Adjustable Number of output voltage channels: 1 Function type: Step-Up Output configuration: Positive; CategoryPower/power management The power supply circuit; File Size223KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html; Environmental Compliance

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LTC3402EMS#PBF Overview

Output current: 2A (Switch) Switch operating frequency: 2MHz Output type: Adjustable Number of output voltage channels: 1 Function type: Step-Up Output configuration: Positive

LTC3402EMS#PBF Parametric

Parameter Name	Attribute value
Brand Name	Linear Technology
Is it Rohs certified?	conform to
Maker	Linear ( ADI )
Parts packaging code	MSOP
package instruction	TSSOP, TSSOP10,.19,20
Contacts	10
Manufacturer packaging code	MS
Reach Compliance Code	compliant
ECCN code	EAR99
Samacsys Description	LTC3402EMS#PBF, DC-DC Converter, 2A Adjustable, Step Up, 2.4 MHz, 10-Pin MSOP
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Maximum input voltage	5 V
Minimum input voltage	0.5 V
Nominal input voltage	1.2 V
JESD-30 code	S-PDSO-G10
JESD-609 code	e3
length	3 mm
Humidity sensitivity level	1
Number of functions	1
Number of terminals	10
Maximum operating temperature	70 °C
Minimum operating temperature
Maximum output current	2.5 A
Package body material	PLASTIC/EPOXY
encapsulated code	TSSOP
Encapsulate equivalent code	TSSOP10,.19,20
Package shape	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260
Certification status	Not Qualified
Maximum seat height	1.1 mm
surface mount	YES
Switch configuration	BOOST
Maximum switching frequency	3000 kHz
technology	CMOS
Temperature level	COMMERCIAL
Terminal surface	Matte Tin (Sn)
Terminal form	GULL WING
Terminal pitch	0.5 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	30
width	3 mm

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LTC3402

2A, 3MHz Micropower

Synchronous Boost Converter

FEATURES

■

DESCRIPTIO

Synchronous Rectification: Up to 97% Efficiency

2A Switch Current Rating

Fixed Frequency Operation Up to 3MHz

Wide Input Range: 0.5V to 5V

Very Low Quiescent Current: 38μA (Burst Mode

Operation)

2.6V to 5.5V Adjustable Output Voltage

0.85V (Typ) Start-Up Voltage

No External Schottky Diode Required (V

OUT

< 4.3V)

Synchronizable Switching Frequency

Burst Mode Enable Control

Antiringing Control Reduces Switching Noise

PGOOD Output

OPTI-LOOP

Compensation

Very Low Shutdown Current: < 1μA

Small 10-Pin MSOP Package

The LTC

3402 is a high efficiency, fixed frequency, step-

up DC/DC converter that operates from an input voltage

below 1V. The device includes a 0.16Ω N-channel MOSFET

switch and a 0.18Ω P-channel synchronous rectifier.

Switching frequencies up to 3MHz are programmed with

an external timing resistor and the oscillator can be

synchronized to an external clock. An external Schottky

diode is optional but will slightly improve efficiency.

Quiescent current is only 38μA in Burst Mode operation,

maximizing battery life in portable applications. Burst

Mode operation is user controlled and can be enabled by

driving the MODE/SYNC pin high. If the MODE/SYNC pin

has either a clock or is driven low, then fixed frequency

switching is enabled.

Other features include a 1μA shutdown, antiringing con-

trol, open-drain power good output, thermal shutdown

and current limit. The LTC3402 is available in the 10-lead

thermally enhanced MSOP package. Lower current appli-

cations should use the 1A rated LTC3401 synchronous

boost converter. Applications that require V

OUT

< 2.6V

should use the LTC3424.

, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.

Burst Mode and OPTI-LOOP are registered trademarks of Linear Technology Corporation.

APPLICATIO S

■

Cellular Telephones

Handheld Computers

MP3 Players

2-Way Pagers

GPS Receivers

Battery Backup Supplies

CCFL Backlights

TYPICAL APPLICATIO

= 1.8V to 3V

2.2μH

All Ceramic Capacitor 2-Cell to 3.3V at 1A Step-Up Converter

100

OUT

3.3V

EFFICIENCY (%)

Burst Mode

OPERATION

1MHz

CONSTANT

FREQUENCY

LTC3402

SHDN

OUT

470pF

82k

909k

44μF

22μF)

549k

4.7pF

CELLS

MODE/SYNC FB

PGOOD

GND

10μF

30.1k

= 2.4V WITH SCHOTTKY

0.1

OUT

(mA)

100

1000

3402

TA02

C1: TAIYO YUDEN JMK212BJ106MG

0 = FIXED FREQ

C2: TAIYO YUDEN JMK325BJ226MM

1 = Burst Mode OPERATION

L1: COILCRAFT: D03316P-222

3402 TA01

Efficiency

3402fb

LTC3402EMS#PBF Related Products

	LTC3402EMS#PBF	LTC3402EMS#TR	LTC3402EMS#TRPBF
Description	Output current: 2A (Switch) Switch operating frequency: 2MHz Output type: Adjustable Number of output voltage channels: 1 Function type: Step-Up Output configuration: Positive	IC reg boost sync adj 2A 10msop	IC REG BOOST ADJ 2A 10MSOP
Brand Name	Linear Technology	Linear Technology	Linear Technology
Is it Rohs certified?	conform to	incompatible	conform to
Maker	Linear ( ADI )	Linear ( ADI )	Linear ( ADI )
Parts packaging code	MSOP	MSOP	MSOP
package instruction	TSSOP, TSSOP10,.19,20	TSSOP, TSSOP10,.19,20	TSSOP, TSSOP10,.19,20
Contacts	10	10	10
Manufacturer packaging code	MS	MS	MS
Reach Compliance Code	compliant	_compli	compliant
ECCN code	EAR99	EAR99	EAR99
Analog Integrated Circuits - Other Types	SWITCHING REGULATOR	SWITCHING REGULATOR	SWITCHING REGULATOR
control mode	CURRENT-MODE	CURRENT-MODE	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION	PULSE WIDTH MODULATION
Maximum input voltage	5 V	5 V	5 V
Minimum input voltage	0.5 V	0.5 V	0.5 V
Nominal input voltage	1.2 V	1.2 V	1.2 V
JESD-30 code	S-PDSO-G10	S-PDSO-G10	S-PDSO-G10
JESD-609 code	e3	e0	e3
length	3 mm	3 mm	3 mm
Humidity sensitivity level	1	1	1
Number of functions	1	1	1
Number of terminals	10	10	10
Maximum operating temperature	70 °C	70 °C	70 °C
Maximum output current	2.5 A	2.5 A	2.5 A
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	TSSOP	TSSOP	TSSOP
Encapsulate equivalent code	TSSOP10,.19,20	TSSOP10,.19,20	TSSOP10,.19,20
Package shape	SQUARE	SQUARE	SQUARE
Package form	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	235	260
Certification status	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.1 mm	1.1 mm	1.1 mm
surface mount	YES	YES	YES
Switch configuration	BOOST	BOOST	BOOST
Maximum switching frequency	3000 kHz	3000 kHz	3000 kHz
technology	CMOS	CMOS	CMOS
Temperature level	COMMERCIAL	COMMERCIAL	COMMERCIAL
Terminal surface	Matte Tin (Sn)	Tin/Lead (Sn/Pb)	Matte Tin (Sn)
Terminal form	GULL WING	GULL WING	GULL WING
Terminal pitch	0.5 mm	0.5 mm	0.5 mm
Terminal location	DUAL	DUAL	DUAL
Maximum time at peak reflow temperature	30	20	30
width	3 mm	3 mm	3 mm

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