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LM3630A 데이터시트(PDF) 1 Page - Texas Instruments

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부품명 LM3630A
상세설명  LM3630A High-Efficiency Dual-String White LED Driver
Download  45 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

LM3630A 데이터시트(HTML) 1 Page - Texas Instruments

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VOUT up to 40V
VIN
COUT
CIN
L
D1
LED1
LED2
OVP
LM3630A
GND
SW
IN
SDA
SCL
HWEN
PWM
AP
INTN
SEL
LM3630A
www.ti.com
SNVS974 – APRIL 2013
LM3630A High-Efficiency Dual-String White LED Driver
Check for Samples: LM3630A
1
FEATURES
DESCRIPTION
The LM3630A is a current mode boost converter
2
Drives up to 2 strings of 10 series LEDs
which supplies the power and controls the current in
Up to 87% efficient
up to two strings of 10 LEDs per string. Programming
8-bit I2C-Compatible Programmable
is
done
over
an
I2C-compatible
interface.
The
Exponential or Linear Brightness Control
maximum LED current is adjustable from 5 mA to
28.5 mA. At any given maximum LED current the
PWM Brightness Control for CABC Operation
LED
brightness
is
further
adjusted
with
256
Independent Current Control per String
exponential or linear dimming steps. Additionally,
True Shutdown Isolation for LEDs
pulsed width modulation ("PWM") brightness control
can be enabled allowing for LED current adjustment
Internal Soft-Start Limits Inrush Current
by a logic level PWM signal.
Wide 2.3V to 5.5V Input Voltage Range
The boost switching frequency is programmable at
Adaptive Headroom
500 kHz for low switching loss performance or 1MHz
Programmable 16V/24V/32V/40V Over-Voltage
to allow the use of tiny low profile inductors. A setting
Protection
for a 10% offset of these frequencies is available.
Selectable Boost Frequency of 500 kHz or
Over-voltage protection is programmable at 16V,
24V, 32V, or 40V to accommodate a wide variety of
1MHz with optionally additional offset
LED
configurations
and
Schottky
Diode/Output
Low Profile 12-Bump DSBGA Package
Capacitor combinations.
Solution Size 32mm²
The device operates over the 2.3V to 5.5V operating
voltage
range
and
-40°C
to
+85°C
ambient
APPLICATIONS
temperature range. The LM3630A is available in an
Smart-Phone LCD Backlighting
ultra-small 12-bump DSBGA package.
LCD + Keypad Lighting
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 © 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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