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MAX1631AEAI PDF预览

MAX1631AEAI

更新时间: 2024-11-11 12:02:31
品牌 Logo 应用领域
美信 - MAXIM 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管电脑输出元件信息通信管理
页数 文件大小 规格书
29页 288K
描述
Multi-Output, Low-Noise Power-Supply Controllers for Notebook Computers

MAX1631AEAI 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:SSOP
包装说明:5.30 MM, 0.65 MM PITCH, SSOP-28针数:28
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.31.00.01风险等级:5.17
Is Samacsys:N其他特性:ALSO CONTAIN 3.3 V OUTPUT
模拟集成电路 - 其他类型:DUAL SWITCHING CONTROLLER控制模式:CURRENT-MODE
控制技术:PULSE WIDTH MODULATION最大输入电压:30 V
最小输入电压:4.2 V标称输入电压:15 V
JESD-30 代码:R-PDSO-G28JESD-609代码:e0
长度:10.2 mm湿度敏感等级:1
功能数量:2端子数量:28
最高工作温度:85 °C最低工作温度:-40 °C
最大输出电流:0.2 A封装主体材料:PLASTIC/EPOXY
封装代码:SSOP封装等效代码:TSSOP28,.3
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, SHRINK PITCH
峰值回流温度(摄氏度):245认证状态:Not Qualified
座面最大高度:1.99 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:PUSH-PULL
最大切换频率:330 kHz技术:BICMOS
温度等级:INDUSTRIAL端子面层:Tin/Lead (Sn85Pb15)
端子形式:GULL WING端子节距:0.65 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:5.29 mmBase Number Matches:1

MAX1631AEAI 数据手册

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19-3518; Rev 1; 8/05  
Multi-Output, Low-Noise Power-Supply  
Controllers for Notebook Computers  
________________General Description  
____________________________Features  
96% Efficiency  
+4.2V to +30V Input Range  
The MAX1630A–MAX1635A are buck-topology, step-  
down, switch-mode, power-supply controllers that gener-  
ate logic-supply voltages in battery-powered systems.  
These high-performance, dual-/triple-output devices  
include on-board power-up sequencing, power-good  
signaling with delay, digital soft-start, secondary winding  
control, low-dropout circuitry, internal frequency-com-  
pensation networks, and automatic bootstrapping.  
2.5V to 5.5V Dual Adjustable Outputs  
Selectable 3.3V and 5V Fixed or Adjustable  
Outputs (Dual Mode™)  
12V Linear Regulator  
Adjustable Secondary Feedback  
(MAX1631A/MAX1634A)  
Up to 96% efficiency is achieved through synchronous  
rectification and Maxim’s proprietary Idle Mode™ control  
scheme. Efficiency is greater than 80% over a 1000:1  
load-current range, which extends battery life in system-  
suspend or standby mode. Excellent dynamic response  
corrects output load transients caused by the latest  
dynamic-clock CPUs within five 300kHz clock cycles.  
Strong 1A on-board gate drivers ensure fast external  
n-channel MOSFET switching.  
5V/50mA Linear Regulator Output  
Precision 2.5V Reference Output  
Programmable Power-Up Sequencing  
Power-Good (RESET) Output  
Output Overvoltage Protection  
(MAX1630A/MAX1631A/MAX1632A)  
Output Undervoltage Shutdown  
(MAX1630A/MAX1631A/MAX1632A)  
These devices feature a logic-controlled and synchroniz-  
able, fixed-frequency, pulse-width-modulation (PWM)  
operating mode. This reduces noise and RF interference  
in sensitive mobile communications and pen-entry appli-  
cations. Asserting the SKIP pin enables fixed-frequency  
mode for lowest noise under all load conditions.  
200kHz/300kHz Low-Noise, Fixed-Frequency  
Operation  
Low-Dropout, 99% Duty-Factor Operation  
2.5mW Typical Quiescent Power (+12V Input,  
Both SMPSs On)  
4µA Typical Shutdown Current  
28-Pin SSOP Package  
The MAX1630A–MAX1635A include two PWM regulators,  
adjustable from 2.5V to 5.5V with fixed 5.0V and 3.3V  
modes. All these devices include secondary feedback  
regulation, and the MAX1630A/MAX1632A/MAX1633A/  
MAX1635A each contain 12V/120mA linear regulators.  
The MAX1631A/MAX1634A include a secondary feed-  
back input (SECFB), plus a control pin (STEER) that  
selects which PWM (3.3V or 5V) receives the secondary  
feedback signal. SECFB provides a method for adjusting  
the secondary winding voltage regulation point with an  
external resistor-divider, and is intended to aid in creating  
auxiliary voltages other than fixed 12V.  
_______________Ordering Information  
PART  
TEMP RANGE  
PIN-PACKAGE  
MAX1630AEAI  
-40°C to +85°C  
28 SSOP  
+Denotes lead-free package.  
Ordering Information continued at end of data sheet.  
________________Functional Diagram  
INPUT  
The MAX1630A/MAX1631A/MAX1632A contain internal  
output overvoltage and undervoltage protection features.  
The MAX1630A family has improved RF immunity over  
the MAX1630 family.  
+12V  
+5V (RTC)  
5V  
12V  
LINEAR  
LINEAR  
________________________Applications  
Notebook and Subnotebook Computers  
+3.3V  
+5V  
3.3V  
5V  
SMPS  
SMPS  
PDAs and Mobile Communicators  
Desktop CPU Local DC-DC Converters  
Pin Configurations and Selector Guide appear at end of data  
sheet.  
POWER-UP  
SEQUENCE  
POWER-  
GOOD  
ON/OFF  
RESET  
Idle Mode and Dual Mode are trademarks 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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