EEWORLDEEWORLDEEWORLD

Part Number

Search

SC618

Description
Charge Pump Flash LED Driver with Safety Timer
File Size394KB,13 Pages
ManufacturerSEMTECH
Websitehttp://www.semtech.com
Download Datasheet Compare View All

SC618 Overview

Charge Pump Flash LED Driver with Safety Timer

NOT RECOMMENDED FOR NEW DESIGN
SC618
Charge Pump Flash LED
Driver with Safety Timer
POWER MANAGEMENT
Features
Flash and spotlight — two selectable modes
Flash mode — up to 700mA output
Flash mode — 500mA max output (over rated voltage,
temperature, and load conditions)
Flash mode safety timer shut-off — 1 second
Spotlight mode set to 40% of flash current
Spotlight mode — up to 280mA output
Spotlight mode —1x mode (under most conditions)
for best efficiency
Input range — 3.0V to 5.25V
External flash control pin for synchronization to a cam-
era module or graphics controller
Short-circuit, over-voltage, and over-temperature pro-
tection
Soft-start functionality
Separate flash and spotlight control inputs for maxi-
mum versatility
Ultra-thin package MLPD-UT-10 — 3mm x 3mm x
0.6mm
Description
The SC618 is a high-current charge pump designed spe-
cifically for use with white LEDs used in camera flash
applications. Only two small bucket capacitors are required
to develop the output drive, providing a low EMI solution
compared to inductive boost regulators.
The SC618 has two modes of operation: flash mode and
spotlight mode. In flash mode, the SC618 is capable of
delivering 500mA of regulated current for a duration of
500ms or up to 700mA for a reduced duration. A safety
timer is also included to ensure the LED cannot be left on
indefinitely and overheat. In spotlight mode the SC618
outputs 40% of the flash mode current and can remain
enabled continuously.
An external resistor is connected in series with the LED to
set the current. In flash mode, this resistor can dissipate
up to 175mW, reducing the power dissipation require-
ment of the SC618. The flash input overrides the control
input to make sure the flash function is activated .
The SC618 ultra-thin package provides both a low profile
and high thermal efficiency.
Applications
Mobile camera phones
Digital cameras
PDAs with built-in cameras
Typical Application Circuit
V
BAT
N
O
T
FO R
R EC
N O
EW M
M
D EN
ES D
IG ED
N
SC618
VIN
VOUT
GND
ISET
CTRL
FLASH
10μF
C1+
1μF
White LED
1μF
C1-
C2+
1μF
C2-
R
SET
FLASH
CTRL
February 6, 2008
1

SC618 Related Products

SC618 SC618EVB SC618ULTRT
Description Charge Pump Flash LED Driver with Safety Timer Charge Pump Flash LED Driver with Safety Timer Charge Pump Flash LED Driver with Safety Timer
Design of Gesture Recognizer
[i=s]This post was last edited by jameswangsynnex on 2015-3-3 20:01[/i]   Currently, the more popular navigation key control methods include four-dimensional keys and joysticks, which are the two most...
songbo Mobile and portable
How big is the difference between non-contact capacitive liquid level sensors and touch switches
rt It seems that the principle is similar, so are there any specific differences? Can they be used interchangeably? Are there any requirements for the conductivity of the liquid?...
grove_armweak Sensor
STTS22H digital temperature sensor PCB package, driver
The STTS22H digital temperature sensor is an ultra-low power, high-precision digital temperature sensor that provides high performance over the entire operating temperature range. The STTS22H is a ban...
littleshrimp MEMS sensors
MicroPython Chinese Tutorial
[i=s]This post was last edited by dcexpert on 2016-7-5 10:12[/i] [font=Tahoma, Helvetica, SimSun, sans-serif]MicroPython Chinese Tutorial, pdf format. It is compiled based on forum posts and official ...
dcexpert MicroPython Open Source section
Which one should a novice learn embedded system from? Please give me some advice!
Which one should a novice start with when learning embedded systems? Seeking guidance from experts! I have learned the Samsung 2440 development board in school, but I have no practical experience. Eve...
yaoliming Embedded System
Evaluation summary: Yatli AT-START-F425, the first choice for USB and CAN applications
Activity details: [AT-START-F425, the first choice for USB and CAN applications]Updated to 2022-05-30Evaluation report summary:@kit7828【AT-START-F425 Review】 Review Summary【AT-START-F425 Review】 VII. ...
EEWORLD社区 Special Edition for Assessment Centres

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 4  2634  2215  1871  223  1  54  45  38  5 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号