收藏本站
FUNCTIONAL DESCRIPTION
FUNCTIONAL PIN DESCRIPTION
ERROR AMPLIFIER INVERTING INPUT (INV1, INV2)
Buck converter error amplifier inverting input. Connect the
V DDQ voltage (channel 1) to INV1 pin through a resistor
divider and connect the V TT voltage (channel 2) directly to
INV2 pin.
OUTPUT VOLTAGE DISCHARGE PATH (VOUT1,
VOUT2)
Buck converters output voltage are connected to these
pins. It only serves as the output discharge path once the SD
signal is asserted.
INTERNAL SUPPLY VOLTAGE OUTPUT (VDDI)
This is the output of the internal bias voltage regulator.
Connect a 1.0 μF, 6.0 V low ESR ceramic filter capacitor
between this pin and the GND pin. Filtering any spikes on this
output is essential to the internal circuitry stable operation.
SIGNAL GROUND (GND)
Analog ground of the IC. Internal analog signals are
referenced to this pin voltage.
INPUT SUPPLY VOLTAGE (VIN)
IC power supply input voltage. Input filtering is required for
the device to operate properly.
POWER GOOD OUTPUT SIGNAL (PG)
This is an active low open drain output that is used to
report the status of the device to a host. This output activates
after a successful power up sequence and stays active as
long as the device is in normal operation and is not
experiencing any faults. This output activates after a 10ms
delay and must be pulled up by an external resistor to a
supply voltage like V IN .
STANDBY INPUT (STBY)
If this pin is tied to the GND pin, the device will be in
Standby mode. If left unconnected or tied to the VIN pin, the
device will be in Normal mode. The pin has an internal pull-
up of 1.5 M ? . This input accepts the S3 (Suspend-To-RAM)
control signal.
SHUTDOWN INPUT (SD)
If this pin is tied to the GND pin, the device will be in
Shutdown Mode. If left unconnected or tied to the VIN pin, the
device will be in Normal mode. The pin has an internal pull-
up of 1.5 M ? . This input accepts the S5 (Suspend-To-Disk)
control signal.
REFERENCE VOLTAGE OUTPUT (VREFOUT)
This is a buffered reference voltage output that is equal to
1/2 V REFIN . It has a 10 mA current drive capability. This
output is used as the V REF voltage rail and should be filtered
against any noise. Connect a 0.1 μF, 6.0 V low ESR ceramic
filter capacitor between this pin and the GND pin and
between this pin and V DDQ rail. V REFOUT is also used as the
reference voltage for the buck converter error amplifier.
REFERENCE VOLTAGE INPUT (VREFIN)
The output of channel two will track 1/2 the voltage applied
at this pin.
FREQUENCY ADJUSTMENT INPUT (FREQ)
The buck converters switching frequency can be adjusted
by connecting this pin to an external resistor divider between
VDDI and GND pins. The default switching frequency (FREQ
pin connected to ground, GND) is set at 1.0 MHz.
CHANNEL 1 SOFT START ADJUSTMENT INPUT
(ILIM1)
Channel one Soft Start can be adjusted by applying a
voltage between 1.25 V and V DDI .
34716
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
13
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