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LM3642 Datasheet(PDF) 3 Page - Texas Instruments

Part # LM3642
Description  LM3642 1.5-A Synchronous Boost LED Flash Driver With High-Side Current Source
PDF  30 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM3642 Datasheet(HTML) 3 Page - Texas Instruments

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A1
A2
B1
B2
B3
Top View
A3
C2
C1
C3
LM3642
www.ti.com
SNVS891H – SEPTEMBER 2012 – REVISED SEPTEMBER 2015
5 Pin Configuration and Functions
YZR Package
9-Pin DSBGA
Top View
Pin Functions
PIN
I/O
DESCRIPTION
NO.
NAME
Step-up DC-DC converter output. Connect a 10-µF ceramic capacitor between this pin
A1
OUT
Power
and GND.
A2
SW
Power
Drain connection for internal NMOS and synchronous PMOS switches.
A3
GND
Ground
Ground
B1
LED
Output
High-side current source output for Flash LED.
Active high hardware Flash enable. Drive STROBE high to turn on Flash pulse. Has an
B2
STROBE
Input
internal pulldown resistor of 300 k
Ω between STROBE and GND.
Input voltage connection. Connect IN to the input supply, and bypass to GND with a 10-
B3
IN
Power
µF or larger ceramic capacitor.
Configurable power amplifier synchronization input or configurable active high Torch
C1
TX/TORCH
Input
enable. Has an internal pulldown resistor of 300 k
Ω between TX and GND.
C2
SDA
Input/Output
Serial data input/output.
C3
SCL
Input
Serial clock input.
Copyright © 2012–2015, Texas Instruments Incorporated
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Product Folder Links: LM3642



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