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19-3783; Rev 1; 2/07
ATION
AILABL
EVALU E
AV
KIT
1MHz PWM Boost Converter for 1.5A
White LED Camera Flash
General Description
The MAX8607 white LED boost converter is optimized
for camera flash/strobe applications using high-current
white LEDs. The MAX8607 integrates a 1MHz PWM
boost converter, 1.5A low-dropout (LDO) current regu-
lator, and logic control circuitry for a space-saving LED
flash design. Two logic inputs control four modes of
operation: shutdown mode reduces the quiescent cur-
rent to 0.1μA (typ), movie mode supplies up to 360mA
of LED current for continuous lighting, flash mode sup-
plies up to 1.5A of LED current for short-duration light-
ing during an exposure, and disco mode supplies +5V
(at up to 1A) to external circuits while driving the LED
with a fixed 80mA current.
The internal 1MHz boost converter features an adaptive
control scheme with an internal switching MOSFET and
synchronous rectifier to improve efficiency and mini-
mize external component count. The MAX8607 is avail-
able in a 14-pin, 3mm x 3mm TDFN package (0.8mm
max height).
Applications
Camera Flashes/Strobes
Features
? Supports Lumileds and Other High-Power
White LEDs
? Independently Set Flash/Movie Currents
Flash-Mode Current Up to 1.5A
Movie-Mode Current Up to 360mA
? Disco Mode with Fixed 5V (Up to 1A) and 80mA
LED Current
? 84% Efficiency (P LED / P BATT ) at 1.1A
? T A Derating Function for LED Thermal Protection
? Output Overvoltage Protection (OVP)
? Soft-Start Eliminates Inrush Current
? 1MHz PWM Operation at All Loads
? Small External Components
? 2.7V to 5.5V Input Voltage Range
? 0.1μA Shutdown Mode
? 14-Pin, 3mm x 3mm TDFN Package
Ordering Information
Cell Phones/Smartphones
PDAs and Digital Cameras
PART *
MAX8607ETD+
PIN-PACKAGE
14 TDFN 3mm x 3mm
(T1433-1)
TOP MARK
ABA
+ Indicates lead-free package.
* The MAX8607ETD is characterized over the -40°C to +85°C
temperature range.
Pin Configuration
Typical Operating Circuit
TOP VIEW
INPUT
2.7V TO 5.5V
2.2 μ H
LX
MAX8607 OUT
OUTPUT
14
13
12
11
10
9
8
10 μ F
PGND
OUTS
LGND
10 μ F
UP TO 1.5A FLASH
UP TO 360mA MOVIE
COMP
GND
MAX8607
MODE-
SELECT
EN1
+
INPUTS
EN2
LED
1
2
3
4
5
6
7
FLSH
MOV
TDFN
3mm x 3mm
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
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MAX8608YEVKIT 功能描述:LED 照明开发工具 RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
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MAX8608ZETD+T 功能描述:LED照明驱动器 26V Step-Up Converter RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N