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MAX8646ETG+ PDF预览

MAX8646ETG+

更新时间： 2024-11-18 04:41:35
品牌 Logo 应用领域
美信 - MAXIM 稳压器开关
页数 文件大小 规格书
16页 363K
描述
6A, 2MHz Step-Down Regulator with Integrated Switches

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MAX8646ETG+ 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：HVQCCN, LCC24,.16SQ,20针数：24
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：1.45
模拟集成电路 - 其他类型：SWITCHING REGULATOR控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：3.6 V
最小输入电压：2.35 V标称输入电压：3.3 V
JESD-30 代码：S-XQCC-N24JESD-609代码：e3
长度：4 mm湿度敏感等级：1
功能数量：1端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
最大输出电流：11 A封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC24,.16SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, 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：BUCK
最大切换频率：2000 kHz技术：BICMOS
温度等级：INDUSTRIAL端子面层：Matte Tin (Sn)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmBase Number Matches：1

MAX8646ETG+ 数据手册

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19-3971; Rev 2; 10/07  
6A, 2MHz Step-Down Regulator  
with Integrated Switches  
General Description  
Features  
The MAX8646 high-efficiency switching regulator deliv-  
ers up to 6A load current at output voltages from 0.6V  
♦ Internal 23mΩ R  
MOSFETs  
DS(ON)  
♦ Continuous 6A Output Current  
to 0.9 x V . The IC operates from 2.35V to 3.6V, mak-  
IN  
♦ ±1% Output Accuracy over Load, Line,  
and Temperature  
ing it ideal for on-board point-of-load and postregula-  
tion applications. Total output error is less than ±±1  
over load, line, and temperature ranges.  
♦ Operates from 2.35V to 3.6V Supply  
♦ Adjustable Output from 0.6V to (0.9 x V  
IN)  
The MAX8646 features fixed-frequency PWM mode  
operation with a switching frequency range of 500kHz  
to 2MHz set by an external resistor. High-frequency  
operation allows for an all-ceramic capacitor design.  
The high operating frequency also allows for small-size  
external components.  
♦ Soft-Start Reduces Inrush Supply Current  
♦ 500kHz to 2MHz Adjustable Switching Frequency  
♦ Compatible with Ceramic, Polymer, and  
Electrolytic Output Capacitors  
♦ VID-Selectable Output Voltages  
0.6V, 0.7V, 0.8V, 1.0V, 1.2V, 1.5V, 1.8V, 2.0V,  
and 2.5V  
The low-resistance on-chip nMOS switches ensure high  
efficiency at heavy loads while minimizing critical induc-  
tances, making the layout a much simpler task with  
respect to discrete solutions. Following a simple layout  
and footprint ensures first-pass success in new designs.  
♦ Fully Protected Against Overcurrent and  
Overtemperature  
♦ Safe-Start into Prebiased Output  
♦ Sink/Source Current in DDR Applications  
♦ Lead-Free, 24-Pin, 4mm x 4mm Thin QFN Package  
The MAX8646 comes with a high bandwidth (> ±4MHz)  
voltage-error amplifier. The voltage-mode control archi-  
tecture and the voltage-error amplifier permit a type III  
compensation scheme to be utilized to achieve maxi-  
mum loop bandwidth, up to 201 of the switching fre-  
quency. High loop bandwidth provides fast transient  
response, resulting in less required output capacitance  
and allowing for all-ceramic-capacitor designs.  
Ordering Information  
TEMP  
PKG  
CODE  
PART  
PIN-PACKAGE  
RANGE  
24 Thin QFN-EP*  
4mm x 4mm  
The MAX8646 provides two tri-state logic inputs to  
select one of nine preset output voltages. The preset  
output voltages allow customers to achieve ±±1 out-  
put-voltage accuracy without using expensive 0.±1  
resistors. In addition, the output voltage can be set to  
any customer value by either using two external resis-  
tors at the feedback with 0.6V internal reference or  
applying an external reference voltage to the REFIN  
input. The MAX8646 offers programmable soft-start  
time using one capacitor to reduce input inrush current.  
The MAX8646 is available in a lead-free, 24-pin, 4mm x  
4mm, thin QFN package.  
MAX8646ETG+ -40°C to +85°C  
T2444-4  
+Denotes a lead-free package.  
*EP = Exposed pad.  
Typical Operating Circuit  
INPUT  
2.4V, 3.6V  
IN  
BST  
OUTPUT  
1.8V, 6A  
MAX8646  
EN  
LX  
V
DD  
OUT  
Applications  
PGND  
FB  
POLs  
CTL1  
ASIC/CPU/DSP Core and I/O Voltages  
DDR Power Supplies  
CTL2  
FREQ  
Base-Station Power Supplies  
Telecom and Networking Power Supplies  
RAID Control Power Supplies  
REFIN  
SS  
V
DD  
COMP  
PREBIAS  
PWRGD  
GND  
Pin Configuration appears at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
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MAX8646ETG+ 替代型号

型号 品牌 替代类型 描述 数据表
MAX8646ETG+T MAXIM

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