参数资料
型号: MAX8608YETD+T
厂商: Maxim Integrated
文件页数: 1/11页
文件大小: 0K
描述: IC LED DRVR WT/OLED BCKLT 14TDFN
标准包装: 2,500
拓扑: PWM,升压(升压)
输出数: 2
内部驱动器:
类型 - 主要: 背光
类型 - 次要: OLED,白色 LED
频率: 770kHz ~ 1.25MHz
电源电压: 2.7 V ~ 6 V
输出电压: 26V
安装类型: 表面贴装
封装/外壳: 14-WFDFN 裸露焊盘
供应商设备封装: 14-TDFN-EP(3x3)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
ATION
EVALU
AVAILA
19-3881; Rev 0; 10/05
KIT
B LE
High-Efficiency, 26V Step-Up Converters for Main
and Subdisplays Using OLEDs and/or White LEDs
General Description
The MAX8608Y/MAX8608Z dual LED drivers use a sin-
gle inductor to provide two outputs for either organic
LED (OLED) power or white LED (WLED) drive in dual-
display cell phones. Each output can be configured for
either voltage regulation (adjustable up to 26V) for OLED
or current regulation (adjustable up to 40mA) for WLED.
The topology integrates a single 1MHz/500kHz PWM
step-up converter and two output load switches to mini-
mize size and external components and maximize effi-
ciency. Each output (OUTA, OUTB) is enabled by
individual logic inputs for simplicity; however, if ENA is
high, ENB is overridden and OUTB becomes disabled.
A single CTRL input accepts either an analog or direct-
PWM dimming signal for proportional control of the out-
put voltage or current. Internal lowpass filtering
eliminates the need for any external filters at CTRL
while maintaining low input and output ripple under all
conditions.
The MAX8608Y features a T A derating function to avoid
overdriving the LEDs during high ambient tempera-
tures, enabling higher drive current below +40°C. Other
features shared by both devices include soft-start, out-
Features
? For Dual Displays
OLED + OLED
White LED + OLED
White LED + White LED
? Two Outputs Share One Inductor and One
Schottky Diode
? Output True Shutdown
? Over 83% Efficiency at 13V to 20V/10mA to 20mA
? Up to 900mW Output Power
? Flexible Analog or PWM Dimming Control
? Selectable 1MHz or 500kHz PWM Operation
? Temperature Derating (MAX8608Y)
? Small, Low-Profile External Components
? 26V Output Overvoltage Protection
? Optimized for Low Input/Output Ripple
? Soft-Start Eliminates Inrush Current
Ordering Information
put overvoltage protection, output overcurrent/short-cir-
cuit protection, output True Shutdown?, and thermal
shutdown.
The MAX8608Y/MAX8608Z are available in a space-
saving, 14-pin, 3mm x 3mm TDFN lead-free package.
PART
MAX8608YETD+
MAX8608ZETD+
PIN-PACKAGE
14 TDFN 3mm x 3mm
T1433-2
14 TDFN 3mm x 3mm
T1433-2
TOP
MARK
ANN
ANO
PKG
CODE
T1433-1
T1433-1
Applications
OLED Power and/or White LED Backlights
Cell Phones and Smartphones
PDAs, Palmtops, and Wireless Handhelds
Note: All parts are specified in the -40°C to +85°C extended
temperature range.
+ Denotes lead-free package.
Pin Configuration
TOP VIEW
14
13
12
11
10
9
8
MAX8608Y/
MAX8608Z
+
1
2
3
4
5
6
7
True Shutdown is a trademark of Maxim Integrated Products, Inc.
3mm x 3mm x 0.8mm
TDFN
________________________________________________________________ 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.
1
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