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MAX1848ETA+

更新时间： 2024-02-08 16:06:59
品牌 Logo 应用领域
美信 - MAXIM 开关
页数 文件大小 规格书
9页 278K
描述
Switching Regulator, Current-mode, 0.85A, 1600kHz Switching Freq-Max, 3 X 3 MM, 0.80 MM HEIGHT, TQFN-8

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MAX1848ETA+ 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active零件包装代码：QFN
包装说明：VQCCN, SOLCC8,.12,25针数：8
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：12 weeks
风险等级：0.76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：2.6 V
标称输入电压：3 VJESD-30 代码：S-XQCC-N8
JESD-609代码：e3长度：3 mm
湿度敏感等级：1功能数量：1
端子数量：8最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：0.85 A
封装主体材料：UNSPECIFIED封装代码：VQCCN
封装等效代码：SOLCC8,.12,25封装形状：SQUARE
封装形式：CHIP CARRIER, VERY THIN PROFILE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.8 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BOOST最大切换频率：1600 kHz
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.65 mm
端子位置：QUAD处于峰值回流温度下的最长时间：30
宽度：3 mmBase Number Matches：1

MAX1848ETA+ 数据手册

 浏览型号MAX1848ETA+的Datasheet PDF文件第2页浏览型号MAX1848ETA+的Datasheet PDF文件第3页浏览型号MAX1848ETA+的Datasheet PDF文件第4页浏览型号MAX1848ETA+的Datasheet PDF文件第5页浏览型号MAX1848ETA+的Datasheet PDF文件第6页浏览型号MAX1848ETA+的Datasheet PDF文件第7页 
19-2028; Rev 2; 8/05  
White LED Step-Up Converter in SOT23  
General Description  
Features  
The MAX1848 drives white LEDs with a constant cur-  
rent to provide backlight in cell phones, PDAs, and  
other hand-held devices. The step-up converter topology  
allows series connection of the white LEDs so that the  
LED currents are identical for uniform brightness. This  
configuration eliminates the need for ballast resistors  
and expensive factory calibration. Other benefits  
include greater simplicity, lower cost, higher efficiency,  
and greater reliability.  
♦ Constant Current Regulation for Uniform  
Illumination  
♦ High 87% Efficiency  
♦ Analog or Logic Control of LED Intensity  
♦ 0.8W Output Power with Internal High-Voltage  
MOSFET Switch  
♦ Small, Low-Profile External Components  
This step-up PWM converter includes an internal, high-  
♦ 2.6V to 5.5V Input Range  
voltage, low R  
N-channel MOSFET switch for high  
DSON  
♦ 13V Maximum Output with Overvoltage Protection  
♦ Optimized for Low Input Ripple  
♦ Programmable Soft-Start  
efficiency and maximum battery life. A single analog  
™
voltage Dual Mode input provides a simple means of  
brightness adjustment and on/off control. Fast 1.2MHz  
current-mode PWM control allows for small input and  
output capacitors and a small inductor while minimizing  
ripple on the input supply/battery. Programmable soft-  
start eliminates inrush current during startup.  
♦ 0.3µA Shutdown Current  
♦ Small 8-pin Thin QFN (3mm ✕ 3mm) and  
8-Pin SOT23 Packages  
The MAX1848 is available in space-saving 8-pin thin  
QFN (3mm ✕ 3mm) and 8-pin SOT23 packages.  
Ordering Information  
PIN-  
PACKAGE  
TOP  
MARK  
Applications  
PART  
TEMP RANGE  
Cell Phones and Smart Phones  
PDAs, Palmtops, and Wireless Handhelds  
e-Books and Subnotebooks  
MAX1848EKA-T -40°C to +85°C 8 SOT23  
AAIM  
ACR  
8 Thin QFN  
MAX1848ETA-T  
-40°C to +85°C  
✕
(3mm 3mm)  
8 Thin QFN  
(3mm 3mm)  
White LED Display Backlighting  
MAX1848ETA+T -40°C to +85°C  
+ Denotes lead-free package.  
ACR  
✕
Note: Hand soldering is not recommended for the MAX1848  
SOT23 package.  
Typical Application Circuit  
Pin Configuration  
L1  
33μH  
TOP VIEW  
2.6V to 5.5V  
C
3.3μF  
IN  
D1  
+
+
LX  
COMP  
CTRL  
OUT  
LX  
1
2
3
4
8
7
6
5
V+  
COMP  
CTRL  
OUT  
LX  
1
2
3
4
8
7
6
5
V+  
V+  
OUT  
C
1μF  
OUT  
CS  
CS  
MAX1848  
MAX1848  
GND  
PGND  
GND  
PGND  
MAX1848  
PGND  
GND  
LOGIC  
OR DAC  
CTRL  
SOT23  
THIN QFN  
3mm x 3mm  
COMP  
C
CS  
COMP  
0.15μF  
R
SENSE  
5Ω  
Dual Mode is a trademark of Maxim Integrated Products, Inc.  
________________________________________________________________ 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.  
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中文翻译

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MAX1848ETA+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX1848ETA+T MAXIM

完全替代

 Switching Regulator, Current-mode, 0.85A, 1600kHz Switching Freq-Max, 3 X 3 MM, 0.80 MM HE
MAX1848ETA-T MAXIM

类似代替

 暂无描述
MAX1848ETA MAXIM

功能相似

 White LED Step-Up Converter in SOT23

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