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LTC3429ES6#TRMPBF

Description
Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R
File Size190KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
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LTC3429ES6#TRMPBF Overview

Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R

LTC3429ES6#TRMPBF Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesCompliant
ECCN (US)EAR99
Part StatusActive
HTS8542.39.00.01
TypeSynchronous Step Up
Output TypeAdjustable
Switching Frequency (kHz)620
Switching RegulatorYes
Number of Outputs1
Output Voltage (V)2.5 to 5
Maximum Output Current (A)0.6
Minimum Input Voltage (V)0.5
Maximum Input Voltage (V)4.4
Typical Quiescent Current (uA)380
Efficiency (%)96
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
PackagingTape and Reel
Pin Count6
Standard Package NameSOT
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed6
Lead ShapeGull-wing
LTC3429/LTC3429B
600mA, 500kHz Micropower
Synchronous Boost Converter
with Output Disconnect
FEATURES
DESCRIPTIO
Up to 96% Efficiency
True Output Load Disconnect
Inrush Current Limiting and Internal Soft-Start
Low Voltage Start-Up: 0.85V
Automatic Burst Mode
®
Operation with I
Q
~ 20µA
Continuous Switching at Light Loads (LTC3429B)
Internal Synchronous Rectifier
Current Mode Control with Internal Compensation
Short-Circuit Protection
500kHz Fixed Frequency Switching
Input Range: 0.5V to 4.4V
Output Range: 2.5V to 4.3V (Up to 5V with Schottky)
Shutdown Current: <1µA
Antiringing Control Minimizes EMI
Tiny External Components
Low Profile (1mm) SOT-23 Package
The LTC
®
3429/LTC3429B are high efficiency synchro-
nous, fixed frequency, step-up DC/DC converters with true
output load disconnect, inrush current limiting and soft-
start in a low profile 6-lead ThinSOT
TM
package. These
devices are capable of supplying 100mA from a single AA
cell input or 250mA from a 2-cell AA with a 3.3V output.
A switching frequency of 500kHz minimizes overall solu-
tion footprint by allowing the use of tiny, low profile
inductors and ceramic capacitors. Current mode PWM
control with internal compensation reduces external parts
count thereby saving critical board real estate. The LTC3429
shifts automatically to power saving Burst Mode operation
at light loads while the LTC3429B features continuous
switching at light loads. Antiringing control circuitry re-
duces EMI concerns by damping the inductor in discon-
tinuous mode.
The devices also feature low shutdown current of under
1µA. The true output disconnect feature allows the output
to be completely discharged in shutdown. It also limits the
inrush of current during start-up, minimizing surge cur-
rents seen by the input supply.
, LTC and LT are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Burst Mode is a registered
trademark of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology
Corporation.
APPLICATIO S
MP3 Players
Digital Cameras
LCD Bias Supplies
Handheld Instruments
Wireless Handsets
GPS Receivers
TYPICAL APPLICATIO
4.7µH
100
V
IN
= 3V
90
V
OUT
3.3V
250mA
10µF
604k
EFFICIENCY (%)
+
EFFICIENCY
V
IN
= 2.4V
2-CELL
AA
4.7µF
V
IN
SW
V
OUT
1.02M
80
70
60
50
LTC3429
OFF ON
SHDN
GND
FB
3429 F01a
Figure 1. 2-Cell to 3.3V Synchronous Boost Converter
40
0.1
U
2-Cell to 3.3V Efficiency
100
10
POWER LOSS (W)
U
U
1
0.1
V
IN
= 3V
0.01
V
IN
= 2.4V
POWER LOSS
0.001
0.0001
1000
3429 F01b
1
10
100
OUTPUT CURRENT (mA)
3429fa
1

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Description Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23 T/R Conv DC-DC 0.5V to 4.4V Synchronous Step Up Single-Out 2.5V to 5V 0.6A 6-Pin TSOT-23
EU restricts the use of certain hazardous substances Compliant Compliant Compliant Compliant Not Compliant Compliant Not Compliant Not Compliant Compliant Not Compliant
ECCN (US) EAR99 EAR99 EAR99 EAR99 EAR99 - EAR99 EAR99 EAR99 EAR99
Part Status Active Unconfirmed Active Active Unconfirmed Unconfirmed Unconfirmed Unconfirmed Active Unconfirmed
Type Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up Synchronous Step Up
Output Type Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable Adjustable
Switching Frequency (kHz) 620 620 620 620 620 620 620 620 620 620
Switching Regulator Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Number of Outputs 1 1 1 1 1 1 1 1 1 1
Output Voltage (V) 2.5 to 5 2.5 to 5 2.5 to 5 2.5 to 5 2.5 to 5 2.5 to 5 2.5 to 5 2.5 to 5 2.5 to 5 2.5 to 5
Maximum Output Current (A) 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
Minimum Input Voltage (V) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5
Maximum Input Voltage (V) 4.4 4.4 4.4 4.4 4.4 4.4 4.4 4.4 4.4 4.4
Typical Quiescent Current (uA) 380 380 380 380 380 380 380 380 380 380
Efficiency (%) 96 96 96 96 96 96 96 96 96 96
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40 -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended Extended Extended Extended Extended Extended
Pin Count 6 6 6 6 6 6 6 6 6 6
Standard Package Name SOT SOT SOT SOT SOT-23 SOT SOT-23 SOT-23 SOT SOT-23
Supplier Package TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max)
Package Length 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9 2.9
Package Width 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max)
PCB changed 6 6 6 6 6 6 6 6 6 6
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
HTS 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 - 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01 -
Packaging Tape and Reel Tape and Reel Tape and Reel Tape and Reel - Tape and Reel Tape and Reel Tape and Reel Tape and Reel -
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