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SC1408IS.TR PDF预览

SC1408IS.TR

更新时间: 2024-10-02 22:05:11
品牌 Logo 应用领域
商升特 - SEMTECH 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
页数 文件大小 规格书
12页 159K
描述
LOW VOLTAGE, BOOST DC-DC CONTROLLER

SC1408IS.TR 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:SOIC
包装说明:MS-012AA, SOP-8针数:8
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.87
Is Samacsys:N模拟集成电路 - 其他类型:SWITCHING CONTROLLER
控制模式:CURRENT-MODE控制技术:HYSTERETIC CURRENT MODE
最大输入电压:16.5 V最小输入电压:1.8 V
标称输入电压:2 VJESD-30 代码:R-PDSO-G8
长度:4.9 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:0.5 A封装主体材料:PLASTIC/EPOXY
封装代码:SOP封装等效代码:SOP8,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
峰值回流温度(摄氏度):225认证状态:Not Qualified
座面最大高度:1.75 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:SINGLE
最大切换频率:300 kHz温度等级:INDUSTRIAL
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:3.9 mmBase Number Matches:1

SC1408IS.TR 数据手册

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LOW VOLTAGE, BOOST DC-DC  
CONTROLLER  
SC1408  
August 22, 2000  
TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com  
DESCRIPTION  
FEATURES  
The SC1408 is a low voltage boost controller that oper-  
ates from a 1.8V to 16.5V input range. A shutdown pin  
allows the user to turn the controller off reducing sup-  
ply current to less than 2µA typical. Output voltage can  
be preset to 5V or is adjustable from 3V to 16.5V with  
a resistor divider. The controller changes frequency in  
low load conditions to improve efficiency.  
= 1.8V to 16.5V input range  
= Up to 10W output power  
= Preset 5V or adjustable output  
= Up to 300kHz switching frequency  
= 10µA max shutdown current  
= Industrial temperature range  
= SO-8 or MSOP-8 package  
The SC1408 was designed for two cell Alkaline or sin-  
gle cell Lithium Ion battery applications. With the  
proper external components it can be used as a boost  
converter or a buck/boost converter.  
APPLICATIONS  
= PDA Power supplies  
= Battery powered applications  
= Positive LCD Bias generator  
= Portable communications (cellular phones)  
= Peripheral card supplies  
A current sense is implemented with an external resis-  
tor that is not in the load current path.  
The SC1408 operates in “bootstrapped” mode. When  
the input voltage to the device is less than 2.5V during  
startup, a low voltage 50% fixed duty cycle oscillator is  
switched in to initiate boost action.  
= Industrial power supplies  
ORDERING INFORMATION  
Part Number(1)  
SC1408IS.TR  
SC1408IMS.TR  
Package  
SO-8  
Temp. Range (TA)  
-40° to +85°C  
MSOP-8  
Note:  
(1) Only available in tape and reel packaging. A reel  
contains 2500 devices.  
TYPICAL APPLICATION - BOOST CONFIGURATION  
L1  
Vin (1.8V to 16.5V)  
Vout (3V to 16.5V)  
D1  
U1  
Q1  
R3  
2
4
5
7
1
8
3
6
BST  
GATE  
SHDN ISENSE  
+
+
C3  
REF  
FB  
C2  
AGND  
GND  
R2  
R4  
SC1408IS  
C5  
1
© 2000 SEMTECH CORP.  
652 MITCHELL ROAD NEWBURY PARK CA 91320  

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