- 您现在的位置：买卖IC网 > PDF目录17242 > KIT33701DWBEVB (Freescale Semiconductor)KIT FOR 33701 POWER SUPPLY PDF资料下载
参数资料
| 型号： | KIT33701DWBEVB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 23/39页 |
| 文件大小： | 0K |
| 描述： | KIT FOR 33701 POWER SUPPLY |
| 标准包装： | 1 |
| 主要目的： | DC/DC，LDO 步降 |
| 输出及类型： | 2，非隔离 |
| 输入电压： | 2.8 ~ 6V |
| 稳压器拓扑结构： | 降压 |
| 频率 - 开关： | 300kHz |
| 板类型： | 完全填充 |
| 已供物品： | 板，软件 |
| 已用 IC / 零件： | MC34701 |
| 相关产品： | MC34701EKR2CT-ND - IC POWER SUPPLY MCU 1A 32-SOIC MC34701EKR2TR-ND - IC POWER SUPPLY MCU 1A 32-SOIC MC34701EK-ND - IC POWER SUPPLY MCU 1A 32-SOIC |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页当前第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
5.0 V Input
34701
5.0 V Input
34701
VIN2
VBD
VBST
VIN1
LDRV
CS
VIN2
VBD
VBST
VIN1
LDRV
CS
RT
LDO
3.3 V
VDDH (I/Os)
RT
LDO
1.5 V
VDDL (Core)
ADDR
SDA
SCL
GND
LFB
RST
MCU
ADDR
SDA
SCL
GND
LFB
RST
MCU
5.0 V
EN1
EN2
BOOT
SW
VBST
1.5 V
VDDL (Core)
5.0 V
EN1
EN2
BOOT
SW
VBST
3.3 V
VDDH (I/Os)
CLKSYN
CLKSEL
VOUT
PGND
CLKSYN
CLKSEL
VOUT
PGND
Optional
FREQ
INV
Optional
FREQ
INV
VDDI
VDDI
? V = 2.1 V
Max. Lead
1.8V Start-Up
5.0 V Input Supply
3.3 V I/O Voltage (VLDO)
1.5 V Core Voltage
(VOUT)
? V = 2.1 V
Max. Lead
? V = 2.1 V
Max. Lead
1.8V Start-Up
5.0 V Input Supply
3.3 V I/O Voltage (VOUT)
1.5 V Core Voltage (VLDO)
? V = 0.4 V
? V = 0.4 V
Max. Lag
Max. Lag
? V = 2.1 V
Max. Lead
? V = 0.4 V
Max. Lag
? V = 0.4 V
Max. Lag
Figure 19. Inverted Power-up / Down Sequence in +5.0V
Figure 18. Standard Power-up / Down Sequence
in +5.0V Supply System
STANDARD POWER SEQUENCING
When the power supply IC operates in the Standard Power
Sequencing Mode, the switcher output provides the core
voltage for the microprocessor. This situation and operating
INVERTED POWER SEQUENCING
When the power supply IC is operating in the Inverted
Power Sequencing Mode, the linear regulator (LDO) output
provides the core voltage for the microprocessor, as
illustrated in Figure 19 . Table 5 shows the Power
Sequencing Mode selection.
Supply System
ASSUMED REQUIREMENTS
1. I/O supply voltage not to exceed core voltage by more
than 2.0V.
2. Core supply voltage not to exceed I/O voltage by more
than 0.4V.
Methods of Control
The 34701 has several methods of monitoring and
controlling the regulator output voltages, as described in the
paragraphs below. Power sequencing control is also
achieved through the intrinsic operation of the regulators.
The EN1 and EN2 pins can be used to select the proper
Power Sequencing Mode required by the powered system or
to disable the power sequencing (refer to Table 5 ).
Intrinsic Operation
For both the LDO and switcher, whenever the output
voltage is below the regulation point, the LDO external Pass
MOSFET is on, or the buck high side MOSFET is on at a duty
cycle controlled by the switcher. Because these devices are
MOSFETs, current can flow in either direction, balancing the
voltages via the common supply pin. The ability to maintain
the MOSFETs on is dependent on the available gate voltage,
and thus the size of the boost regulator storage capacitor.
34701
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
23
相关PDF资料 |
PDF描述 |
|---|---|
| RB-1505D/H | CONV DC/DC 1W 15VIN +/-05VOUT |
| R1D-123.3/HP-R | CONV DC/DC 1W 12VIN +/-3.3VOUT |
| MCP1407-E/MF | IC MOSFET DVR 6A 8DFN |
| MCP1406-E/MF | IC MOSFET DVR 6A 8DFN |
| R1D-1224/HP-R | CONV DC/DC 1W 12VIN +/-24VOUT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| KIT33702DWBEVB | 功能描述:电源管理IC开发工具 33702 - QS2 EVAL KIT 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 |
| KIT33730EKEVBE | 功能描述:电源管理IC开发工具 SWITCH MODE PWR SUP 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 |
| KIT33742DWEVB | 功能描述:网络开发工具 SBC WITH EHSCAN RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
| KIT3376MMA7330L | 功能描述:加速传感器开发工具 XYZ-AXIS ANALOG ACCELERO RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V |
| KIT3376MMA7331L | 功能描述:加速传感器开发工具 3-AXIS ANALOG OUT 4g /12g Dev Kit RoHS:否 制造商:Murata 工具用于评估:SCA3100-D04 加速:2 g 传感轴:Triple Axis 接口类型:SPI 工作电压:3.3 V |
发布紧急采购，3分钟左右您将得到回复。