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LM3554TMX/NOPB Datasheet(PDF) 3 Page - Texas Instruments

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Part # LM3554TMX/NOPB
Description  Synchronous Boost Converter
PDF  47 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LM3554TMX/NOPB Datasheet(HTML) 3 Page - Texas Instruments

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A1
A2
B1
B2
B3
A3
C2
C1
C3
D2
D3
A4
B4
C4
D4
D1
3
LM3554
www.ti.com
SNVS549C – JUNE 2009 – REVISED FEBRUARY 2016
Product Folder Links: LM3554
Submit Documentation Feedback
Copyright © 2009–2016, Texas Instruments Incorporated
5 Pin Configuration and Functions
YFQ Package
16-Pin DSBGA
Top View
Pin Descriptions
PIN
TYPE
DESCRIPTION
NUMBER
NAME
A1
LED1
Power
High-side current source output for flash LED.
A2, B2
OUT
Power
Step-up DC-DC converter output.
A3, B3
SW
Power
Drain connection for internal NMOS and synchronous PMOS switches.
A4, B4
GND
Ground
Ground
B1
LED2
Power
High-side current source output for flash LED.
C1
LEDI/NTC
Input/Output
Configurable as a high-side current source output for indicator LED or
threshold detector for LED temperature sensing.
C2
TX1/TORCH/GPIO1
Input/Output
Configurable as a RF power amplifier synchronization control input (TX1), a
hardware torch enable (TORCH), or a programmable general-purpose logic
input/output (GPIO1).
C3
STROBE
Input
Active high hardware flash enable. Drive STROBE high to turn on flash
pulse.
C4
IN
Power
Input voltage connection. Connect IN to the input supply, and bypass to
GND with a minimum 4.7-µF ceramic capacitor.
D1
ENVM/TX2/GPIO2/INT
Input/Output
Configurable as an active high voltage mode enable (ENVM), dual polarity
power amplifier synchronization input (TX2), or programmable general
purpose logic input/output (GPIO2).
D2
SDA
Input/Output
Serial data input output
D3
SCL
Input
Serial clock input
D4
HWEN
Input
Active low hardware reset



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