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LP3958TL/NOPB Datasheet(PDF) 6 Page - Texas Instruments

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Part # LP3958TL/NOPB
Description  Lighting Management Unit with High Voltage Boost Converter
PDF  36 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP3958TL/NOPB Datasheet(HTML) 6 Page - Texas Instruments

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background image
SW
GND_SW
MAIN
GND_WLED
SUB
GND_KEY
KEY1
KEY2
KEY3
FB
VDD1
D
A
8-Bit
IDAC
8-Bit
IDAC
MCU
SCL
SDA
LDO
BIAS
REF
THSD
POR
OSC
I
2C
BRIGHTNESS
CONTROL
CONTROL
BG
BOOST
PWM
NRST
VDDIO
IKEY
IRT
VDDA
VREF
VDD2
Logic supply
GND
GPIO[0]/PWM
GPIO[1]
GPIO[2]
D
A
Li-Ion
Battery
or
Charger
= 70 mA
= 8...18 V
10 é
F
L1
10 PH
SUB
BACKLIGHT
0...25 mA/LED
MAIN
BACKLIGHT
0...25 mA/LED
100 nF
D1
100 nF
100 nF
1 PF
2 x 4.7 éF
100 pF
390:
Optional EMI FILTER,
close to SW pin
COUT
IMAX
VOUT
RSW
CSW
CVDDA
CIN
CVDD
CVREF
RKEY
RRT
RSDA
VDDIO
CVDDIO
3 STRINGS
OF 4 LEDS
FOR KEYPAD
LP3958
SNVS423C – JANUARY 2006 – REVISED MARCH 2013
www.ti.com
BLOCK DIAGRAM
6
Submit Documentation Feedback
Copyright © 2006–2013, Texas Instruments Incorporated
Product Folder Links: LP3958



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