LT3464ETS8#TRMPBF Linear Technology, LT3464ETS8#TRMPBF Datasheet

IC CONV BOOST MICROPWR TSOT23-8

LT3464ETS8#TRMPBF

Manufacturer Part Number
LT3464ETS8#TRMPBF
Description
IC CONV BOOST MICROPWR TSOT23-8
Manufacturer
Linear Technology
Type
Step-Up (Boost)r
Datasheet

Specifications of LT3464ETS8#TRMPBF

Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
1.25 ~ 34 V
Current - Output
115mA
Voltage - Input
2.3 ~ 10 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
TSOT-23-8, TSOT-8
Primary Input Voltage
10V
No. Of Outputs
1
Output Voltage
34V
Output Current
115mA
No. Of Pins
8
Operating Temperature Range
-40°C To +85°C
Msl
MSL 1 - Unlimited
Supply Voltage Range
2.3V To 10V
Rohs Compliant
Yes
Dc To Dc Converter Type
Step Up
Pin Count
8
Input Voltage
10V
Package Type
TSOT-23
Output Type
Adjustable
Switching Regulator
Yes
Line Regulation
0.1%/V
Mounting
Surface Mount
Input Voltage (min)
2.3V
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Power - Output
-
Frequency - Switching
-
Lead Free Status / Rohs Status
Compliant
Other names
LT3464ETS8#TRMPBFTR

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FEATURES
APPLICATIO S
TYPICAL APPLICATIO
Tiny Solution Size
Low Quiescent Current
Internal 115mA, 36V Switch
Integrated Schottky Diode
Integrated PNP Output Disconnect with
Short-Circuit Protection
Internal Reference Override Pin
16V at 8mA from 3.6V Input
12V at 20mA from 5V Input
Input Range: 2.3V to 10V
High Output Voltage: Up to 34V
Low Profile (1mm) SOT-23 Package
OEL Panel Bias
LCD Bias
Handheld Computers
Battery Backup
Digital Cameras
Cellular Phones
25 A in Active Mode
0.5 A in Shutdown Mode
2.3V TO 10V
V
IN
1 F
U
CTRL
SHDN
V
IN
LT3464
22 H
GND
U
OUT
CAP
SW
FB
0.22 F
0.33 F
3464 TA01a
Output Disconnect in ThinSOT™
3.48M
294k
V
16V
OUT
Converter with Schottky and
DESCRIPTIO
The LT
with integrated Schottky diode and output disconnect
packaged in an 8-lead low profile (1mm) SOT-23. The
small package size, high level of integration, and the use
of tiny SMT components yield a solution size of less than
40mm
as well as fast switching speed to allow the use of a chip
inductor and small ceramic capacitors. The internal PNP
disconnects the output load from the input during shut-
down, and also provides output short-circuit protection.
An auxiliary reference input allows the user to override the
internal 1.25V feedback reference with any lower value,
allowing full control of the output voltage during opera-
tion. This device features a low 25 A quiescent current,
which is further reduced to less than 0.5 A in shutdown.
A current limited fixed off-time control scheme conserves
operating current, resulting in high efficiency over a broad
range of operating current. The rugged 36V switch and
output disconnect circuitry allow outputs up to 34V to be
easily generated in a simple boost topology.
ThinSOT is a trademark of Linear Technolgy Corporation
, LTC and LT are registered trademarks of Linear Technology Corporation.
2
®
. The LT3464 has a typical current limit of 115mA
3464 is a micropower step-up DC/DC converter
90
80
70
60
50
40
30
0.01
Micropower Boost
U
V
0.1
IN
LOAD CURRENT (mA)
= 8.4V
Efficiency
1
V
IN
= 4.2V
10
3634 TA01b
LT3464
100
1
3464f

Related parts for LT3464ETS8#TRMPBF

LT3464ETS8#TRMPBF Summary of contents

Page 1

... The rugged 36V switch and output disconnect circuitry allow outputs up to 34V to be easily generated in a simple boost topology. , LTC and LT are registered trademarks of Linear Technology Corporation. ThinSOT is a trademark of Linear Technolgy Corporation SW V ...

Page 2

LT3464 ABSOLUTE AXI U RATI GS (Note SHDN, CTRL Voltage ........................................ 10V IN OUT, CAP Voltage .................................................... 36V SW Voltage .............................................................. 36V FB Voltage ................................................................. 6V Maximum Junction Temperature .......................... 125 C Operating Temperature ...

Page 3

W U TYPICAL PERFOR A CE CHARACTERISTICS Switch Saturation Voltage I = 80mA SW 220 200 180 160 140 120 100 –50 – 100 TEMPERATURE ( C) 3464 G01 Minimum Switch On-Time 100 ...

Page 4

LT3464 W U TYPICAL PERFOR A CE CHARACTERISTICS Schottky Forward Drop 110mA D 800 750 700 650 600 550 500 450 400 350 300 –50 – 100 TEMPERATURE ( C) 3464 G10 Quiescent ...

Page 5

W U TYPICAL PERFOR A CE CHARACTERISTICS FB Pin Voltage vs CTRL Pin Voltage 1.50 1.25 1.00 0.75 0.50 0. 0.25 0.5 0.75 1.0 1.25 1.5 1.75 CONTROL PIN VOLTAGE (V) 3464 G17 ...

Page 6

LT3464 W BLOCK DIAGRA – CTRL 1 – 8 SHDN U OPERATIO The LT3464 uses a constant off-time control scheme in ® conjunction with Burst Mode operation to provide high efficiency over a wide ...

Page 7

U W SWITCHI WAVEFOR S Operating Waveforms I L 0.1A/DIV V OUT 50mV/DIV 5 s/DIV 20V OUT I = 1mA LOAD SHDN 5V/DIV ...

Page 8

LT3464 U U APPLICATIO S I FOR ATIO Choosing an Inductor The low current limit and fast switching of the LT3464 allow the use of very small surface mount inductors. The minimum inductor size that may be used in a ...

Page 9

U U APPLICATIO S I FOR ATIO Capacitor Selection The small size and low ESR of ceramic capacitors makes them suitable for LT3464 applications. X5R and X7R types are recommended because they retain their capacitance over wider voltage and temperature ...

Page 10

LT3464 U U APPLICATIO S I FOR ATIO OUT OUT 1 1 CTRL CTRL 5 LT3464 CAP SHDN SHDN 2 FB GND R1 4 Figure 4. Feedback Connection Using ...

Page 11

U U APPLICATIO S I FOR ATIO Board Layout Considerations As with all switching regulators, careful attention must be paid to the PCB board layout and component placement. To maximize efficiency, switch rise and fall times are made as short ...

Page 12

LT3464 U TYPICAL APPLICATIO 2.3V TO 10V 1 CTRL SHDN C1: TAIYO YUDEN LMK107 BJ105MA-T C2: TAIYO YUDEN EMK107 BJ224MA-T C3: TAIYO YUDEN EMK107 BJ224MA-T L1: MURATA LQH32CN220K V IN 2.3V TO 10V ...

Page 13

U TYPICAL APPLICATIO 2.3V TO 10V CTRL SHDN C1: TAIYO YUDEN LMK107 BJ105MA-T C2: TAIYO YUDEN GMK212 BJ334MG-T C3: TAIYO YUDEN UMK212 BJ224MG L1: MURATA LQH32CN470K V IN 2.3V ...

Page 14

LT3464 U TYPICAL APPLICATIO 2. C1: TAIYO YUDEN CE LMK107 BJ105MA-T C2: TAIYO YUDEN CE LMK212 BJ225MG-T C3: TAIYO YUDEN CE LMK107 BJ474MA-T L1: MURATA LQH32CN220K V IN 2.3V TO ...

Page 15

... 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 16

... I = <1 A, OUT(MAX 34V 1.2mA <1 A, OUT(MAX 34V 1.9mA <1 A, OUT(MAX 34V <1 A, OUT(MAX 34V <1 A, OUT(MAX 34V <1 A, OUT(MAX 8mA < 6.5mA < 5mA < 5V A/300 <1 A, OUT(MAX 6V <1 A, OUT(MAX 6V <1 A, OUT(MAX LT/TP 0204 1K • PRINTED IN USA LINEAR TECHNOLOGY CORPORATION 2003 3464f ...

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