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LM3224 Datasheet(PDF) 1 Page - Texas Instruments

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Part # LM3224
Description  LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM3224 Datasheet(HTML) 1 Page - Texas Instruments

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LM3224
RFB1
L
CC
D
RC
CIN
COUT
RFB2
SW
5
FB
2
GND
4
VC
VOUT
VIN
Battery or
Power Source
SS
8
CSS
Optional
FSLCT
VIN
6
7
SHDN
3
1
LM3224
www.ti.com
SNVS277C – DECEMBER 2004 – REVISED MARCH 2013
LM3224 615kHz/1.25MHz Step-up PWM DC/DC Converter
Check for Samples: LM3224
1
FEATURES
DESCRIPTION
The LM3224 is a step-up DC/DC converter with a
2
Operating Voltage Range of 2.7V to 7V
0.15
Ω (typ.), 2.45A (typ.) internal switch and pin
615kHz/1.25MHz Pin Selectable Frequency
selectable operating frequency. With the ability to
Operation
convert 3.3V to multiple outputs of 8V, -8V, and 23V,
Over Temperature Protection
the LM3224 is an ideal part for biasing TFT displays.
With the high current switch it is also ideal for driving
Optional Soft-Start Function
high current white LEDs for flash applications. The
8-Lead VSSOP Package
LM3224 can be operated at switching frequencies of
615kHz and 1.25MHz allowing for easy filtering and
APPLICATIONS
low noise. An external compensation pin gives the
user flexibility in setting frequency compensation,
TFT Bias Supplies
which makes possible the use of small, low ESR
Handheld Devices
ceramic capacitors at the output. An external soft-
Portable Applications
start pin allows the user to control the amount of
inrush current during start up. The LM3224 is
GSM/CDMA Phones
available in a low profile 8-lead VSSOP package.
Digital Cameras
White LED Flash/Torch Applications
Typical Application Circuit
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2
All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2004–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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