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LM3648YFFR Fiches technique(PDF) 3 Page - Texas Instruments

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No de pièce LM3648YFFR
Description  Synchronous Boost LED Flash Driver
Download  38 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

LM3648YFFR Fiches technique(HTML) 3 Page - Texas Instruments

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background image
Top View
A1
A2
B1
B2
B3
Top View
A3
C2
C1
C3
D2
D3
D1
Pin A1
LM3648, LM3648TT
www.ti.com
SNVSA68B – OCTOBER 2014 – REVISED SEPTEMBER 2015
5 Pin Configuration and Functions
YFF Package
12-Pin DSBGA
Pin Functions
PIN
TYPE(1)
DESCRIPTION
NUMBER
NAME
A1
GND
G
Ground
Input voltage connection. Connect IN to the input supply and bypass to GND with a 10-
A2
IN
P
µF or larger ceramic capacitor.
A3
SDA
I/O
Serial data input/output in the I2C Mode on LM3648.
B1
SW
P
Drain connection for Internal NMOS and Synchronous PMOS Switches.
Active high hardware flash enable. Drive STROBE high to turn on Flash pulse. Internal
B2
STROBE
I
pulldown resistor of 300 k
Ω between STROBE and GND.
B3
SCL
I
Serial clock input for LM3648.
Step-up DC-DC converter output. Connect a 10-µF ceramic capacitor between this
C1
OUT
P
terminal and GND.
Active high enable pin. High = Standby, Low = Shutdown/Reset. Internal pulldown
C2
HWEN
I
resistor of 300 k
Ω between HWEN and GND.
Torch terminal input or threshold detector for NTC temperature sensing and current
C3
TORCH/TEMP
I/P
scale back.
D1
LED
P
High-side current source output for flash LED. Connect pin D1 to D3 externally.
Configurable dual polarity power amplifier synchronization input. Internal pulldown
D2
TX
I
resistor of 300 k
Ω between TX and GND.
D3
LED
P
High-side current source output for flash LED. Connect pin D1 to D3 externally.
(1)
A: Analog Pin, G: Ground Pin, P: Power Pin, I: Digital Input Pin
Copyright © 2014–2015, Texas Instruments Incorporated
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Product Folder Links: LM3648 LM3648TT


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