LTC3400ES6#TRM Linear Technology, LTC3400ES6#TRM Datasheet

IC CONV SYNC BOOST MPWR SOT23-6

LTC3400ES6#TRM

Manufacturer Part Number
LTC3400ES6#TRM
Description
IC CONV SYNC BOOST MPWR SOT23-6
Manufacturer
Linear Technology
Type
Step-Up (Boost)r
Datasheet

Specifications of LTC3400ES6#TRM

Internal Switch(s)
Yes
Synchronous Rectifier
Yes
Number Of Outputs
1
Voltage - Output
2.5 ~ 5 V
Current - Output
850mA
Frequency - Switching
1.2MHz
Voltage - Input
0.5 ~ 6 V
Operating Temperature
-30°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-6, TSOT-6
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Power - Output
-
Other names
LTC3400ES6#TRMTR

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Company
Part Number
Manufacturer
Quantity
Price
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Part Number:
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Manufacturer:
LINEAR
Quantity:
176
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Part Number:
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Manufacturer:
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Quantity:
20 000
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Part Number:
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Manufacturer:
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Quantity:
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FEATURES
TYPICAL APPLICATIO
APPLICATIO S
Pagers
MP3 Players
Digital Cameras
LCD Bias Supplies
Handheld Instruments
Wireless Handsets
GPS Receivers
Up to 92% Efficiency
Generates 3.3V at 100mA from a Single AA Cell
Low Start-Up Voltage: 0.85V
1.2MHz Fixed Frequency Switching
Internal Synchronous Rectifier
2.5V to 5V Output Range
Automatic Burst Mode
Continuous Switching at Light Loads (LTC3400B)
Logic Controlled Shutdown (< 1 A)
Antiringing Control Minimizes EMI
Tiny External Components
Low Profile (1mm) SOT-23 Package
+
Figure 1. Single Cell to 3.3V Synchronous Boost Converter
C1, C2: TAIYO-YUDEN X5R EMK316BJ475ML
L1: COILCRAFT DO160C-472
SINGLE
AA CELL
U
C1
4.7 F
OFF ON
®
Operation (LTC3400)
4.7 H
6
4
L1
V
SHDN
IN
LTC3400
GND
SW
U
1
2
V
OUT
FB
5
3
R1
1.02M
1%
R2
604k
1%
3400 F01
C2
4.7 F
V
3.3V
100mA
OUT
Synchronous Boost Converter
600mA, 1.2MHz Micropower
DESCRIPTIO
The LTC
quency, step-up DC/DC converters delivering high effi-
ciency in a 6-lead ThinSOT™ package. Capable of supplying
3.3V at 100mA from a single AA cell input, the devices
contain an internal NMOS switch and PMOS synchronous
rectifier.
A switching frequency of 1.2MHz minimizes solution
footprint by allowing the use of tiny, low profile inductors
and ceramic capacitors. The current mode PWM design is
internally compensated, reducing external parts count.
The LTC3400 features automatic shifting to power saving
Burst Mode operation at light loads, while the LTC3400B
features continuous switching at light loads. Antiringing
control circuitry reduces EMI concerns by damping the
inductor in discontinuous mode, and the devices feature
low shutdown current of under 1 A.
Both devices are available in the low profile (1mm)
SOT-23 package.
ThinSOT is a trademark of Linear Technology Corporation.
, LTC, LT and Burst Mode are registered trademarks of Linear Technology Corporation.
®
3400/LTC3400B are synchronous, fixed fre-
100
90
80
70
60
50
40
0.1
LTC3400/LTC3400B
FIGURE 1 CIRCUIT
WITH OPTIONAL SCHOTTKY DIODE
(SEE APPLICATIONS INFORMATION)
U
1
LOAD CURRENT (mA)
Efficiency
V
IN
= 2.4V
10
V
IN
in ThinSOT
= 1.5V
100
3400 F01a
1000
3400fa
1

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LTC3400ES6#TRM Summary of contents

Page 1

... EMI concerns by damping the inductor in discontinuous mode, and the devices feature low shutdown current of under 1 A. Both devices are available in the low profile (1mm) SOT-23 package. , LTC, LT and Burst Mode are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation OUT 5 3 ...

Page 2

LTC3400/LTC3400B ABSOLUTE AXI U RATI GS (Note 1) V Voltage ................................................. – 0. Voltage ................................................. – 0. SHDN, FB Voltage ....................................... – 0. ........................................................... – 0. ...

Page 3

W U TYPICAL PERFOR A CE CHARACTERISTICS Output Load Burst Mode Threshold 4 3. OUT OUT 10 0 0.9 1.5 2.1 2.7 3.3 ...

Page 4

LTC3400/LTC3400B CTIO S SW (Pin 1): Switch Pin. Connect inductor between SW and V . Optional Schottky diode is connected between IN SW and V . Keep these PCB trace lengths as short and OUT ...

Page 5

U OPERATIO The LTC3400/LTC3400B are 1.2MHz, synchronous boost converters housed in a 6-lead ThinSOT package. Able to operate from an input voltage below 1V, the devices feature fixed frequency, current mode PWM control for exceptional line and load regulation. With ...

Page 6

LTC3400/LTC3400B U OPERATIO burst threshold, the LTC3400 will resume continuous PWM operation seamlessly. Referring to the Block Dia- gram, an optional capacitor (C ) between V FF some circumstances can reduce the peak-to-peak V ripple and input quiescent current during ...

Page 7

U U APPLICATIO S I FOR ATIO The inductor current ripple is typically set for 20% to 40% of the maximum inductor current (I ferrite core inductor materials reduce frequency depen- dent power losses compared to cheaper powdered iron types, ...

Page 8

LTC3400/LTC3400B U TYPICAL APPLICATIO S + SINGLE AA CELL OFF ON D1: CENTRAL SEMI CMDSH2-3 L1: COILCRAFT DS1608-472 8 Single Cell to 3.3V Synchronous Boost Converter with Load Disconnect in Shutdown ...

Page 9

U TYPICAL APPLICATIO S + LITHIUM CELL D1: PHILIPS PMEG2010EA L1: SUMIDA CMD4D06-4R7 C1, C2: TAIYO YUDEN JMK212BJ475MG Single Lithium Cell to 5V, 250mA OPTIONAL 2 SNUBBER 1nF ...

Page 10

LTC3400/LTC3400B U TYPICAL APPLICATIO S Single Cell AA Cell to 3V Synchronous Boost Converter + SINGLE AA CELL D1, D2: ZETEX FMND7000 DUAL DIODE L1: COILCRAFT DS1608-472 4 4 ...

Page 11

... MOLD FLASH SHALL NOT EXCEED 0.254mm 6. JEDEC PACKAGE REFERENCE IS MO-193 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. U ...

Page 12

... OUT as Low as 1.1V 30mA from Single Cell Shutdown Current Low for Gate Drive CC = 2.6V to 16V 450mA from 3.3V Input IN as Low as 1.5V 0.5V to 4.5V, IN (min): 2.4V to 5.25V QFN OUT Q LT/TP 0903 1K REV A • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2001 3400fa ...

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