5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> UCC3954N
UCC3954N PDF预览

UCC3954N

更新时间： 2024-09-20 04:27:03
品牌 Logo 应用领域
德州仪器 - TI 转换器电池
页数 文件大小 规格书
10页 332K
描述
Single Cell Lithium-Ion to +3.3V Converter

阅读下载

中文翻译

获取价格

UCC3954N 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：DIP
包装说明：DIP, DIP8,.3针数：8
Reach Compliance Code：not_compliantECCN代码：EAR99
HTS代码：8542.39.00.01风险等级：5.92
模拟集成电路 - 其他类型：BATTERY CHARGE CONTROLLER控制模式：VOLTAGE-MODE
控制技术：PULSE WIDTH MODULATION最大输入电压：4.2 V
最小输入电压：2.5 V标称输入电压：3.5 V
JESD-30 代码：R-PDIP-T8长度：9.78 mm
功能数量：1端子数量：8
最高工作温度：70 °C最低工作温度：
最大输出电流：0.2 A封装主体材料：PLASTIC/EPOXY
封装代码：DIP封装等效代码：DIP8,.3
封装形状：RECTANGULAR封装形式：IN-LINE
峰值回流温度（摄氏度）：NOT SPECIFIED认证状态：Not Qualified
座面最大高度：5.33 mm子类别：Switching Regulator or Controllers
表面贴装：NO切换器配置：BUCK-BOOST
最大切换频率：200 kHz技术：BICMOS
温度等级：COMMERCIAL端子形式：THROUGH-HOLE
端子节距：2.54 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：7.62 mm
Base Number Matches：1

UCC3954N 数据手册

 浏览型号UCC3954N的Datasheet PDF文件第2页浏览型号UCC3954N的Datasheet PDF文件第3页浏览型号UCC3954N的Datasheet PDF文件第4页浏览型号UCC3954N的Datasheet PDF文件第5页浏览型号UCC3954N的Datasheet PDF文件第6页浏览型号UCC3954N的Datasheet PDF文件第7页 
UCC3954  
PRELIMINARY INFORMATION  
Single Cell Lithium-Ion to +3.3V Converter  
FEATURES  
DESCRIPTION  
• Converts Lithium-Ion Cell to The UCC3954, along with a few external components, develops a regulated +3.3V  
+3.3V at 700mA Load  
Current  
from a single lithium-ion battery whose terminal voltage can vary between 2.5V and  
4.2V. The UCC3954 employs a simple flyback (Buck-Boost) technique to convert the  
battery energy to +3.3V. This is accomplished by referencing the lithium-ion cell’s  
positive terminal to system ground. The negative terminal of the battery is the return  
point for the UCC3954. This approach enables the converter to maintain constant fre-  
quency operation whether the cell voltage is above or below the output voltage. An  
additional benefit of this technique is its inherent ability to disconnect the battery from  
the load in shutdown mode.  
• Load Disconnect in  
Shutdown  
• High Efficiency Flyback  
Operation  
• Internal 0.15Ω Switch  
• Low Battery LED Driver  
• Internal 2A Current Limit  
• Internal 200kHz Oscillator  
The UCC3954 operates as a fixed 200kHz switching frequency voltage mode flyback  
converter. The oscillator time base and ramp are internally generated by the  
UCC3954 and require no external components. A 2A current limit for the internal  
0.15Ω power switch provides protection in the case of an output short circuit. When  
left open, an internal 100kΩ resistor pulls the SD pin to BAT–, which puts the  
UCC3954 in shutdown mode, and thereby reduces power consumption to sub-µA lev-  
els. A low battery detect function will drive the LOWBAT pin low (minimum of 5mA  
sink current) when the battery has been discharged to within 200mV of the prede-  
fined lockout voltage. The LOWBAT pin is intended for use with an external LED to  
provide visual warning that the battery is nearly exhausted. The lockout mode is acti-  
vated when the battery is discharged to 2.55V. In lockout mode, the part consumes  
15µA. Once the UCC3954 has entered lockout mode, the user must insert a fresh  
battery whose open circuit voltage is greater than 3.1V. This prevents a system-level  
oscillation of the lockout function due to the lithium-ion battery’s large equivalent se-  
ries resistance.  
• 8 Pin D, N, 14 Pin PW  
Packages  
Additional features of the UCC3954 include a trimmed –1.1V reference and internal  
feedback scaling resistors, a precision error amplifier, low quiescent current drain in  
shutdown mode, and a softstart function. The UCC3954 is offered in the 8 pin D,  
14 pin PW (surface mount), and N (through hole) packages.  
BLOCK DIAGRAM  
UDG-96137-1  
6/98  
1234567...10

中文翻译

下载PDF

与UCC3954N相关器件

型号 品牌 获取价格 描述 数据表
UCC3954PW ETC

获取价格

 		Voltage-Mode SMPS Controller
UCC3956 TI

获取价格

 		Switch Mode Lithium-Ion Battery Charger Controller
UCC3956DW TI

获取价格

 		SWITCH-MODE LITHIUM-ION BATTERY CHARGE CONTROLLER
UCC3956DWTR ETC

获取价格

 		Battery Management
UCC3956DWTRG4 TI

获取价格

 		0.6A BATTERY CHARGE CONTROLLER, 110kHz SWITCHING FREQ-MAX, PDSO20, PLASTIC, SOIC-20
UCC3956N ETC

获取价格

 		Battery Management
UCC3956NG4 TI

获取价格

 		Switch-mode Lead-Acid Battery Charger with Differential Current Sense 20-PDIP -20 to 70
UCC3957 TI

获取价格

 		Three - Four Cell Lithium-Ion Protector Circuit
UCC3957-1 TI

获取价格

 		Three - Four Cell Lithium-Ion Protector Circuit
UCC3957-1M TI

获取价格

 		4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, 0.635 MM PITCH, SSOP-16

与UCC3954N相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证