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LM3559 Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM3559
Description  Synchronous Boost Flash Driver
PDF  50 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3559 Datasheet(HTML) 3 Page - Texas Instruments

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A1
A2
B1
B2
B3
Top View
A3
C2
C1
C3
D2
D3
A4
B4
C4
D4
D1
3
LM3559
www.ti.com
SNVS624B – JUNE 2011 – REVISED JUNE 2016
Product Folder Links: LM3559
Submit Documentation Feedback
Copyright © 2011–2016, Texas Instruments Incorporated
5 Pin Configuration and Functions
YZR Package
16-Pin DSBGA
Top View
Pin Functions
PIN
TYPE
DESCRIPTION
NO.
NAME
A1
LED1
Power
High-side current source output for flash LED1
A2, B2
OUT
Power
Step-up DC-DC converter output. Connect a 10-µF ceramic capacitor between this
pin and GND.
A3, B3
SW
Power
Drain connection for internal NMOS and synchronous PMOS switches
A4, B4
GND
Ground
Ground
B1
LED2
Output
High-side current source output for flash LED2
C1
LEDI/NTC
Input/Output
Configureable as a high-side current source output for indicator LED or comparator
input for LED temperature sensing
C2
TX1/TORCH/GPIO1
Input/Output
Configureable as a dual-polarity RF power amplifier synchronization input, a hardware
torch mode enable, or as a general purpose logic I/O. This pin has an internal 300-k
Ω
pulldown to GND.
C3
STROBE
Input
Active high hardware flash enable. Drive STROBE high to turn on the flash current
pulse. This pin has an internal 300-k
Ω pulldown to GND.
C4
IN
Power
Input voltage connection. Connect IN to the input supply, and bypass to GND with a
minimum 10-µF or larger ceramic capacitor.
D1
TX2/INT/GPIO2
Input/Output
Configurable as a dual-polarity power amplifier synchronization input, an interrupt
output, or as a general purpose logic I/O. This pin has an internal 300-k
Ω pulldown to
GND.
D2
SDA
Input/Output
Serial data input output. High impedance in shutdown or in power down.
D3
SCL
Input
Serial clock input. High impedance in shutdown or in power down.
D4
HWEN
Input
Logic high hardware enable. HWEN is a high impedance input and is normally
connected with an external pullup resistor to a logic high voltage.



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