收藏本站
FUNCTIONAL DESCRIPTION
FUNCTIONAL INTERNAL BLOCK DESCRIPTION
TRACKING AND SEQUENCING
This block allows the output of channel 2 of the 34716 to
track 1/2 the voltage applied at the VREFIN pin. This allows
the V REF and V TT voltages to track 1/2 V DDQ and assures that
none of them will be higher than V DDQ at any point during
normal operating conditions. For power down during a
shutdown (S5) mode, the 34716 uses internal discharge
MOSFETs (M8, M9, and M10 on Figure 2 , page 2 ) to
discharge V DDQ , V TT , and V REF respectively. These
discharge MOSFETs are only active during shutdown mode.
Using this block along with controlling the SD and STBY pins
can offer the user the device for power sequencing by
controlling when to turn the 34716 outputs on or off.
BUCK CONVERTER
This block provides the main function of the 34716: DC to
DC conversion from an un-regulated input voltage to a
regulated output voltage used by the loads for reliable
operation. The buck converter is a high performance, fixed
frequency (externally adjustable), Syncronous buck PWM
voltage-mode control with a minimum on time of 100ns .
It drives integrated 50 m ?? 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 DDR requirements. 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 34716 is designed to address DDR memory power
supplies. The integrated converter has the ability to supply up
to 5.0 A out of channel 1 and sink and source up to 3.0 A of
continuous current from channel 2, providing a full power
supply solution for DDR applications.
34716
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
KIT34717EPEVBE KIT EVAL BOARD 5A 1.0MHZ
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
相关代理商/技术参数
KIT34717EPEVBE 功能描述:电源管理IC开发工具 5.0 A 1.0MHZ FULLY INTEG 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
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