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LTC3402EMS

Description
Conv DC-DC 0.5V to 5V Synchronous Step Up Single-Out 2.6V to 5.5V 2A 10-Pin MSOP
File Size222KB,16 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC3402EMS Overview

Conv DC-DC 0.5V to 5V Synchronous Step Up Single-Out 2.6V to 5.5V 2A 10-Pin MSOP

LTC3402EMS Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
TypeSynchronous Step Up
Output TypeAdjustable
Switching Frequency (kHz)2400
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)2.6 to 5.5
Maximum Output Current (A)2
Minimum Input Voltage (V)0.5
Maximum Input Voltage (V)5
Operating Supply Voltage (V)0.5 to 5
Typical Quiescent Current (uA)440
Efficiency (%)97
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
Pin Count10
Standard Package NameMSOP
Supplier PackageMSOP
MountingSurface Mount
Package Height0.86
Package Length3
Package Width3
PCB changed10
Lead ShapeGull-wing
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
V
IN
= 1.8V to 3V
L1
2.2μH
All Ceramic Capacitor 2-Cell to 3.3V at 1A Step-Up Converter
100
V
OUT
3.3V
1A
90
80
EFFICIENCY (%)
Burst Mode
OPERATION
1MHz
CONSTANT
FREQUENCY
3
10
LTC3402
V
IN
SHDN
SW
V
OUT
4
7
8
9
5
C3
470pF
R5
82k
R2
909k
C2
44μF
(2
×
22μF)
R1
549k
C4
4.7pF
70
60
50
40
30
20
10
0
+
2
CELLS
2
6
MODE/SYNC FB
PGOOD
R
t
V
C
GND
C1
10μF
1
R
t
30.1k
V
IN
= 2.4V WITH SCHOTTKY
0.1
1
10
I
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
U
Efficiency
3402fb
U
U
1

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LTC3402EMS LTC3402EMS#PBF LTC3402EMS#TR LTC3402EMS#TRPBF
Description Conv DC-DC 0.5V to 5V Synchronous Step Up Single-Out 2.6V to 5.5V 2A 10-Pin MSOP Conv DC-DC 0.5V to 5V Synchronous Step Up Single-Out 2.6V to 5.5V 2A 10-Pin MSOP Tube Conv DC-DC 0.5V to 5V Synchronous Step Up Single-Out 2.6V to 5.5V 2A 10-Pin MSOP T/R Conv DC-DC 0.5V to 5V Synchronous Step Up Single-Out 2.6V to 5.5V 2A 10-Pin MSOP T/R
EU restricts the use of certain hazardous substances Not Compliant Compliant Not Compliant Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99
Part Status Unconfirmed Active Unconfirmed Active
HTS 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
Type Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up
Output Type Adjustable Adjustable Adjustable Adjustable
Switching Frequency (kHz) 2400 2400 2400 2400
Switching Regulator Yes Yes Yes Yes
Number of Outputs 1 1 1 1
Output Voltage (V) 2.6 to 5.5 2.6 to 5.5 2.6 to 5.5 2.6 to 5.5
Maximum Output Current (A) 2 2 2 2
Minimum Input Voltage (V) 0.5 0.5 0.5 0.5
Maximum Input Voltage (V) 5 5 5 5
Operating Supply Voltage (V) 0.5 to 5 0.5 to 5 0.5 to 5 0.5 to 5
Typical Quiescent Current (uA) 440 440 440 440
Efficiency (%) 97 97 97 97
Minimum Operating Temperature (°C) -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended
Pin Count 10 10 10 10
Standard Package Name MSOP MSOP MSOP MSOP
Supplier Package MSOP MSOP MSOP MSOP
Mounting Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.86 0.86 0.86 0.86
Package Length 3 3 3 3
Package Width 3 3 3 3
PCB changed 10 10 10 10
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing
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