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MAX1889EGE

更新时间： 2024-11-04 22:25:55
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
32页 793K
描述
Triple-Output TFT LCD Power Supply with Fault Protection

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中文翻译

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MAX1889EGE 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：QFN
包装说明：VQCCN, LCC16,.2SQ,32针数：16
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.65
其他特性：ALSO CONTAINS TWO LINEAR-REGULATOR CONTROLLERS模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：2.7 V
标称输入电压：3 VJESD-30 代码：S-XQCC-N16
JESD-609代码：e0长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：2.8 A
封装主体材料：UNSPECIFIED封装代码：VQCCN
封装等效代码：LCC16,.2SQ,32封装形状：SQUARE
封装形式：CHIP CARRIER, VERY THIN PROFILE峰值回流温度（摄氏度）：245
电源：3/5 V认证状态：Not Qualified
座面最大高度：0.8 mm子类别：Power Management Circuits
最大供电电流 (Isup)：1 mA表面贴装：YES
切换器配置：BOOST最大切换频率：1250 kHz
技术：BICMOS温度等级：INDUSTRIAL
端子面层：Tin/Lead (Sn85Pb15)端子形式：NO LEAD
端子节距：0.8 mm端子位置：QUAD
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：5 mm
Base Number Matches：1

MAX1889EGE 数据手册

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19-2485; Rev 1; 10/02  
Triple-Output TFT LCD Power Supply  
with Fault Protection  
General Description  
Features  
The MAX1889 provides the three regulated output volt-  
ages required for active matrix, thin-film transistor liquid  
crystal displays (TFT LCDs). It combines a high-perfor-  
mance step-up regulator with two linear-regulator con-  
trollers and multiple levels of protection circuitry for a  
complete power-supply system.  
o High-Performance Step-Up Regulator  
Fast Transient Response  
Current-Mode Control Architecture  
Built-In High-Efficiency N-Channel Power  
MOSFET  
Current-Limit Comparator  
>85% Efficiency  
Selectable Switching Frequency  
(500kHz/1MHz)  
Internal Soft-Start  
The main DC-DC converter is a high-frequency  
(500kHz/1MHz), current-mode step-up regulator with  
an integrated N-channel power MOSFET that allows the  
use of ultra-small inductors and ceramic capacitors.  
With its high closed-loop bandwidth performance, the  
MAX1889 provides fast transient response to pulsed  
loads while operating with efficiencies over 85%. The  
positive and negative linear-regulator controllers post-  
regulate charge-pump outputs for TFT gate-on and  
gate-off supplies.  
o Positive Linear-Regulator Controller  
o Negative Linear-Regulator Controller  
o Triple-Level Protection Against Smoke or Fire  
Input Switch Replaces Input Fuse  
Output Overload Detection with Timer Latch  
Thermal Shutdown  
The MAX1889 has a unique input switch control that  
can replace the typical input fuse by disconnecting the  
load from the input supply when a fault is detected.  
The fault detector monitors all three regulated output  
voltages and can monitor current from the input supply  
as well. Additionally, the MAX1889 enters thermal shut-  
down when its overtemperature threshold is reached.  
o 2.7V to 5.5V Input Operating Range  
o Ultra-Small External Components  
o 1µA Shutdown Current (max)  
o 1mA Quiescent Current (max)  
o Ultra-Thin 16-Pin QFN Package  
(0.8mm Maximum Thickness)  
The MAX1889 undervoltage lockout is set at 2.5V (max)  
to allow the input supply to droop under pulsed load  
conditions while avoiding any unexpected behavior  
when its input voltage dips momentarily. Also, the built-  
in soft-start and cycle-by-cycle current limiting prevent  
input surge currents during power-up.  
Ordering Information  
PART  
TEMP RANGE PIN-PACKAGE  
MAX1889ETE  
-40°C to +85°C 16 Thin QFN (5mm ✕ 5mm)  
MAX1889EGE* -40°C to +85°C 16 QFN (5mm ✕ 5mm)  
* Future product—Contact factory for availability.  
The MAX1889 is available in a 16-pin thin QFN pack-  
age with a maximum thickness of 0.8mm for ultra-thin  
LCD panel design.  
Pin Configuration  
Applications  
Notebook Computer Displays  
TOP VIEW  
LCD Monitors  
16  
15  
14  
13  
Car Navigation Displays  
SHDN  
PGND  
GND  
TGND  
LX  
1
2
3
4
12  
11  
10  
9
MAX1889  
FREQ  
FBP  
REF  
5
6
7
8
THIN QFN  
(5mm x 5mm)  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...32

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 		Triple-Output TFT LCD Power Supply with Fault Protection
MAX1889ETE+ MAXIM

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MAX1889EVKIT MAXIM

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 		Evaluation Kit for the MAX1889
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MAX188AEWP MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SO-
MAX188AEWP-T MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SO-
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MAX188BCAP+ MAXIM

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 		ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO

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