收藏本站
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
TRACKING AND SEQUENCING
This block allows the second output of the 34717 to track
the voltage applied at the VREFIN pin in different tracking
configurations. This will be discussed in further details later in
this document. For power down during a shutdown mode, the
34717 uses internal discharge MOSFETs (M8 and M9 on
Figure 2 , page 2 ) to discharge the first and second output
respectively. The discharge MOSFETs are only active during
shutdown mode. Using this block along with controlling the
SD pin can offer the user power sequencing capabilities by
controlling when to turn the 34717 outputs on or off.
BUCK CONVERTER
This block provides the main function of the 34717: DC to
DC conversion from an un-regulated input voltage to a
regulated output voltage used by the loads for reliable
frequency (externally adjustable), synchronous buck PWM
voltage-mode control. It drives integrated 50m Ω N-channel
power MOSFETs saving board space and enhancing
efficiency. The switching regulator output voltage is
adjustable with an accuracy of less than ±2% to meet today’s
requirements. The second channel’s output has the ability to
track the voltage applied at the VREFIN pin. The regulator's
voltage control loop is compensated using a type III
compensation network, with external components to allow for
optimizing the loop compensation, for a wide range of
operating conditions. A typical Bootstrap circuit with an
internal PMOS switch is used to provide the voltage
necessary to properly enhance the high side MOSFET gate.
The 34717 has the ability to supply up to 5.0 A of
continuous current from each channel, making it suitable for
many high current applications.
operation. The buck converter is a high performance, fixed
34717
Analog Integrated Circuit Device Data
Freescale Semiconductor
15
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
KS-1787-MG SHELF SLIDING KEYBOARD ASSEMBLY
KS-1788 SHELF SLIDING KEYBOARD ASSEMBLY
KSDKSTM32-PL KIT IAR KICKSTART STM32 CORTEXM3
LC4064ZC-EV BOARD EVAL FOR ISPMACH 4064ZC
LCMXO2280C-C-EVN BOARD CONTROL EVAL MACHXO
LDB100-024SW LED POWER SUPPLY 24V 0-4A 100W
LDB150-048SW LED POWER SUPPLY 24V-48V 3.125A
LDB200-048SW LED POWER SUPPLY 24V-48V 4.2A
相关代理商/技术参数
KIT34727FCEVBE 功能描述:电源管理IC开发工具 600MA HIGH EFFICIENCY LO RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
KIT34825EPEVME 功能描述:界面开发工具 MICRO USB INTERFACE IC RoHS:否 制造商:Bourns 产品:Evaluation Boards 类型:RS-485 工具用于评估:ADM3485E 接口类型:RS-485 工作电源电压:3.3 V
KIT34844AEPEVBE 功能描述:LED 照明开发工具 IC, 10 CHANNEL LED BACKLIGHT RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
KIT34844EPEVME 功能描述:LED 照明开发工具 MC34844 10-Ch LED BL Driver Eval Kit RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
KIT34845EPEVME 功能描述:LED 照明开发工具 IC, 6 CHANNEL LED BACKL RoHS:否 制造商:Fairchild Semiconductor 产品:Evaluation Kits 用于:FL7732 核心: 电源电压:120V 系列: 封装:
KIT34929EPEVME 功能描述:电源管理IC开发工具 1.0 A/ 28 V BRUSHLESS DC RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V
KIT3500UZ 功能描述:KIT CAP CERM HI FREQ 1210 RoHS:是 类别:套件 >> 无源 - 电容器 系列:U 标准包装:1 系列:SP-Cap CD, CX, SL, SX 套件类型:聚合物，铝电解 值:135 件 - 39µF ~ 470µF，各 15 件 包装:- 安装类型:表面贴装 包括封装:7343-17，7343-20 产品目录页面:2651 (CN2011-ZH PDF) 工具箱内容:(15) PCE4991CT-ND - CAP ALUM 220UF 4V 20% SMD(15) PCE4990CT-ND - CAP ALUM 330UF 2V 20% SMD(15) PCE4989CT-ND - CAP ALUM 150UF 6.3V 20% SMD(15) PCE4988CT-ND - CAP ALUM 150UF 6.3V 20% SMD(15) PCE4943CT-ND - CAP ALUM 39UF 10V 20% SMD(15) PCE4823CT-ND - CAP ALUM 470UF 2V 20% SMD(15) PCE4816CT-ND - CAP ALUM 220UF 4V 20% SMD(15) PCE4479CT-ND - CAP ALUM 220UF 2V 20% SMD(15) PCE4472CT-ND - CAP ALUM 120UF 2V 20% SMD 其它名称:SP4-KIT
KIT35XS3400EVBE 功能描述:交换机 IC 开发工具 QUAD HI SIDE SWITCH RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:USB Power Switches 工具用于评估:MAX4984E 工作电源电压:2.8 V to 5.5 V