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| 型号： | MAX1554ETA+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/11页 |
| 文件大小： | 0K |
| 描述： | IC LED DVR WHITE BCKLGT 8TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 恒定电流： | 是 |
| 拓扑： | PWM，升压（升压） |
| 输出数： | 1 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 电源电压： | 3.15 V ~ 5.5 V |
| 输出电压： | 40V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 其它名称： | MAX1554ETA+TDKR |
19-2875; Rev 1; 12/03
ATION
EVALU
AVAIL
KIT
ABLE
High-Efficiency, 40V Step-Up
Converters for 2 to 10 White LEDs
General Description
The MAX1553/MAX1554 drive white LEDs in series with
a constant current to provide efficient display backlight-
ing in cellular phones, PDAs, and other hand-held
devices. The step-up converter includes an internal
40V, low R DSON , N-channel MOSFET switch for high
efficiency and maximum battery life. The MAX1553 has
a current limit of 480mA for driving two to six white
LEDs, while the MAX1554 has a current limit of 970mA
for driving up to 10 white LEDs.
A single analog/PWM Dual Mode ? input provides two
simple means of brightness adjustment. A separate
enable input provides on/off control. Soft-start minimizes
inrush current during startup.
The MAX1553/MAX1554 are available in space-saving
8-pin TDFN 3mm x 3mm packages.
Applications
Features
? Constant-Current Regulation for Even LED
Illumination
? Internal 40V MOSFET Switch Capable of Driving
10 LEDs
? Small, Low-Profile External Components
? 2.7V to 5.5V Input Range
? Up to 88% Efficiency Driving 6 LEDs
? Up to 82% Efficiency Driving 9 LEDs
(20mA, V CC = 3.6V)
? Analog or PWM Control of LED Intensity
? Optimized for Low Input Ripple
? Soft-Start to Minimize Inrush Current
? 3mm x 3mm 8-Pin TDFN Package
Ordering Information
Cellular Phones
PDA, Palmtop, and Wireless Handhelds
PART
TEMP RANGE
PIN-PACKAGE
TOP
MARK
Color Display Backlight
MAX1553 ETA
MAX1554 ETA
-40°C to +85°C 8 TDFN 3mm x 3mm
-40°C to +85°C 8 TDFN 3mm x 3mm
AGX
AGY
Dual Mode is a trademark of Maxim Integrated Products, Inc.
2.7V TO 5.5V
INPUT
Typical Operating Circuit
TOP VIEW
Pin Configuration
V CC
LX
OFF
ON
EN
OV
WHITE
LEDS
GND
V CC
1
2
8
7
LX
0V
PWM
OR
BRT
MAX1553
MAX1554
FB
EN
BRT
3
4
MAX1553
MAX1554
6
5
SS
FB
DC CONTROL
SS
GND
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.
1
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相关代理商/技术参数 |
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| MAX1555EZK | 制造商:Maxim Integrated Products 功能描述:SOT-23 DUAL-INPUT USB/AC ADAPTER 1- - Cut Tape Product |
| MAX1555EZK+ | 制造商:Maxim Integrated Products 功能描述:CHRGR LI-ION/LI-POL 280MA 4.2V 5PIN TSOT-23 - Rail/Tube |
| MAX1555EZK+T | 功能描述:电池管理 Dual USB/AC 1-Cell Li+ Battery Charger RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX1555EZK+T | 制造商:Maxim Integrated Products 功能描述:CHARGER BATT LI+ USB/AC 5SOT23 制造商:Maxim Integrated Products 功能描述:CHARGER, BATT, LI+, USB/AC, 5SOT23 制造商:Maxim Integrated Products 功能描述:CHARGER, BATT, LI+, USB/AC, 5SOT23; Battery Type:Li-Ion, Li-Polymer; Input Voltage:7V; Battery Charge Voltage:4.2V; Charge Current Max:280mA; Battery IC Case Style:SOT-23; No. of Pins:5; No. of Series Cells:1; Operating Temperature ;RoHS Compliant: Yes |
| MAX1555EZK-T | 功能描述:电池管理 RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
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