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LM3633YFQT датащи(PDF) 1 Page - Texas Instruments

номер детали LM3633YFQT
подробное описание детали  Complete Lighting Power Solution for Smartphone Handsets
Download  59 Pages
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
Logo TI1 - Texas Instruments

LM3633YFQT датащи(HTML) 1 Page - Texas Instruments

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IN
SW
HVLED1
LVLED1
PGND
HWEN
SDA
SCL
LM3633
COUT
CIN
L
D1
PWM
CPOUT
CPOUT
C-
C+
LVLED2
LVLED3
LVLED4
LVLED5
OVP
CP
VIN
VOUT up to 40V
HVLED3
HVLED2
LVLED6
2.7V to 5.5V
PWM
HWEN
SCL
SDA
70%
72%
74%
76%
78%
80%
82%
84%
86%
88%
90%
92%
2.5
3
3.5
4
4.5
5
5.5
VIN (V)
L=22µH, f
SW=1MHz
3s3p
4s3p
5s3p
6s3p
C002
Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
LM3633
SNVS867 – JUNE 2014
LM3633 Complete Lighting Power Solution for Smartphone Handsets
Check for Samples: LM3633
1 Features
3 Description
The
LM3633
11-bit
LED
driver
provides
high-
1
Drives Three Parallel High-Voltage LED Strings
performance backlight dimming for 1, 2, or 3 parallel
for Display and Keypad Lighting
high-voltage LED strings while delivering up to 90%
High-Voltage Strings Capable of up to 40-V
efficiency. The boost converter with integrated 1-A,
Output Voltage and up to 90% Efficiency
40-V MOSFET automatically adjusts to LED forward
voltage to minimize headroom voltage and effectively
Up to 30-mA per Current Sink (Both Backlight and
improve LED efficiency.
Indicator)
11-Bit High-Voltage LED Dimming
The LM3633 is a complete power source for
backlight, keypad, and indicator LEDs in smartphone
PWM Input for Content Adjustable Brightness
handsets. The high-voltage inductive boost converter
Control (CABC)
provides the power for three parallel LED strings
Integrated 1-A/40-V MOSFET
(HVLED1, HVLED2 and HVLED3). The integrated
Adaptive Boost Output to LED Voltages
charge pump provides the bias for the six low-voltage
indicator LEDs (LVLED1-LVLED6). All low-voltage
Six Low-Voltage Current Sinks for Indicator LEDs
current sinks can have a programmable pattern
Integrated Charge Pump for Improved Efficiency
modulated onto their output current for a wide variety
and VIN Operating Range
of blinking patterns.
Internal Pattern Generation Engine for Each
An additional feature is a Pulse Width Modulation
Indicator LED
(PWM) control input for content adjustable backlight
Fully Configurable LED Grouping and Control
control, which can be used to control any high-
Four Programmable Overvoltage Protection
voltage current sink.
Thresholds (16 V, 24 V, 32 V, and 40 V)
The LM3633 is fully programmable via an I2C-
Programmable 500-kHz and 1-MHz Switching
compatible interface. The device operates over a 2.7-
Frequency
V to 5.5-V input voltage range and a
−40°C to 85°C
temperature range.
Overcurrent Protection
Thermal Shutdown Protection
Device Information(1)
27 mm2 Total Solution Size
PART NUMBER
PACKAGE
BODY SIZE (MAX)
LM3633
DSBGA (20)
2.04 mm x 1.78 mm
2 Applications
(1) For all available packages, see the orderable addendum at
Power Source for Smart Phone Illumination
the end of the datasheet.
Display, Keypad and Indicator Illumination
RGB Indicator Driver
space
Simplified Schematic
Dual String Efficiency vs VIN
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.


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