LT3460ES5 LINER [Linear Technology], LT3460ES5 Datasheet

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LT3460ES5

Manufacturer Part Number
LT3460ES5
Description
1.3MHz Step-Up DC/DC Converter in SC70 and ThinSOT
Manufacturer
LINER [Linear Technology]
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT3460ES5
Manufacturer:
LT
Quantity:
10 000
Part Number:
LT3460ES5#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
1.3MHz Switching Frequency
High Output Voltage: Up to 36V
300mA Integrated Switch
12V at 70mA from 5V Input
5V at 60mA from 3.3V Input
Wide Input Range: 2.5V to 16V
Uses Small Surface Mount Components
Low Shutdown Current: <1 A
Low Profile (1mm) SC70 and SOT-23 (ThinSOT
Packages
Digital Cameras
CCD Bias Supply
XDSL Power Supply
TFT-LCD Bias Supply
Local 5V or 12V Supply
Medical Diagnostic Equipment
Battery Backup
V
5V
IN
5V to 12V, 70mA Step-Up DC/DC Converter
OFF ON
4.7 F
SHDN
V
IN
U
LT3460
22 H
GND
SW
FB
U
130k
15k
22pF
1 F
V
12V
70mA
3460 F01
TM
OUT
Converter in SC70 and ThinSOT
)
DESCRIPTIO
The LT
verter. The LT3460 switches at 1.3MHz, allowing the use
of tiny, low cost and low height capacitors and inductors.
The constant frequency results in low, predictable output
noise that is easy to filter.
The high voltage switch in the LT3460 is rated at 38V,
making the device ideal for boost converters up to 36V.
The LT3460 can generate 12V at up to 70mA from a 5V
supply.
The LT3460 is available in SC70 and SOT-23 packages.
ThinSOT is a trademark of Linear Technology Corporation
, LTC and LT are registered trademarks of Linear Technology Corporation.
1.3MHz Step-Up DC/DC
®
3460 is a general purpose step-up DC/DC con-
100mA/DIV
5V/DIV
V
SW
90
85
80
75
70
65
60
I
L
0
U
Switching Waveforms
20
LOAD CURRENT (mA)
Efficiency
0.2 s/DIV
40
60
3460 F01b
3460 F01a
LT3460
80
1
3460f

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LT3460ES5 Summary of contents

Page 1

FEATURES 1.3MHz Switching Frequency High Output Voltage 36V 300mA Integrated Switch 12V at 70mA from 5V Input 5V at 60mA from 3.3V Input Wide Input Range: 2.5V to 16V Uses Small Surface Mount Components Low Shutdown Current: <1 ...

Page 2

... Operating Ambient Temperature Range (Note 2) .................. – Maximum Junction Temperature .......................... 125 C Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 ORDER PART NUMBER LT3460ES5 SW 1 GND PART MARKING 6-LEAD PLASTIC SC70 LTB1 T = 125 C, JMAX ...

Page 3

W U TYPICAL PERFOR A CE CHARACTERISTICS Quiescent Current 2.5 – 2.0 100 C 1.5 1.0 0 (V) IN 3460 G01 Feedback Bias Current ...

Page 4

LT3460 CTIO S (ThinSOT/SC70 Packages) SW (Pin 1/Pin 1): Switch Pin. Connect inductor/diode here. Minimize trace at this pin to reduce EMI. GND (Pin 2/Pins 2 and 5): Ground Pin. Tie directly to local ground ...

Page 5

U OPERATIO Feedback Loop Compensation The LT3460 has an internal feedback compensation net- work as shown in Figure 1 (R and C C the small signal characteristics of a boost converter change with operation conditions, the internal compensation net- work ...

Page 6

LT3460 U OPERATIO margin, C should be chosen so that the midpoint fre- F quency between the zero and the pole is at the cross over frequency. With C = 20pF, the feedback loop Bode plot is reshaped F as ...

Page 7

U TYPICAL APPLICATIO 12V Step-Up Converter 130k 4.7 F LT3460 4 3 SHDN SHDN FB 15k GND 2 C1: TAIYO YUDEN X5R JMK212BJ475 C2: ...

Page 8

LT3460 U TYPICAL APPLICATIO S 3.3V to 12V Step-Up Converter 3. 4 LT3460 SHDN FB GND C1: TAIYO YUDEN X5R JMK212BJ475 C2: TAIYO YUDEN X5R EMK212BJ105 D1: CENTRAL SEMICONDUCTOR ...

Page 9

U TYPICAL APPLICATIO S 12V to 36V Step-Up Converter 12V 16V LT3460 SHDN FB GND C1: TAIYO YUDEN X5R EMK212BJ105 C2: TAIYO YUDEN X7R UMK212BJ224 D1, D2: ...

Page 10

LT3460 PACKAGE DESCRIPTIO 0.62 MAX 3.85 MAX 2.62 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.20 BSC DATUM ‘A’ 0.30 – 0.50 REF NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF ...

Page 11

PACKAGE DESCRIPTIO 0.47 0.65 MAX REF 3.26 MAX 2.1 REF RECOMMENDED SOLDER PAD LAYOUT PER IPC CALCULATOR 0.10 – 0.40 0.10 – 0.30 NOTE: 1. DIMENSIONS ARE IN MILLIMETERS 2. DRAWING NOT TO SCALE 3. DIMENSIONS ARE INCLUSIVE OF PLATING ...

Page 12

LT3460 U TYPICAL APPLICATIO SEPIC 10V LT3460 SHDN FB GND C1, C2: TAIYO YUDEN X5R LMK107BJ105 ...

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