LT3460 Datasheet, PDF (1/12 Pages) Linear Technology – 1.3MHz Step-Up DC/DC Converter in SC70 and ThinSOT

LT3460
1.3MHz Step-Up DC/DC
Converter in SC70 and ThinSOT
FEATURES
s _{1.3MHz Switching Frequency}
s _{High Output Voltage: Up to 36V}
s _{300mA Integrated Switch}
s _{12V at 70mA from 5V Input}
s _{5V at 60mA from 3.3V Input}
s _{Wide Input Range: 2.5V to 16V}
s _{Uses Small Surface Mount Components}
s _{Low Shutdown Current: <1µA}
s _{Low Profile (1mm) SC70 and SOT-23 (ThinSOT}^TM₎
Packages
U
APPLICATIO S
s _{Digital Cameras}
s _{CCD Bias Supply}
s _{XDSL Power Supply}
s _{TFT-LCD Bias Supply}
s _{Local 5V or 12V Supply}
s _{Medical Diagnostic Equipment}
s _{Battery Backup}
DESCRIPTIO
The LT^®3460 is a general purpose step-up DC/DC con-
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
ThinSOT is a trademark of Linear Technology Corporation
TYPICAL APPLICATIO
5V to 12V, 70mA Step-Up DC/DC Converter
V_IN
22µH
5V
4.7µF
V_IN
SW
LT3460
OFF ON SHDN
FB
GND
130k
22pF
V_OUT
12V
70mA
1µF
15k
3460 F01
Efficiency
90
85
80
75
70
65
60
0
20
40
60
80
LOAD CURRENT (mA)
3460 F01a
Switching Waveforms
V_SW
5V/DIV
I_L
100mA/DIV
0.2µs/DIV
3460 F01b
3460f
1