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参数资料
| 型号： | KIT33701DWBEVB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 16/39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 |
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FUNCTIONAL DESCRIPTION
INTRODUCTION
FUNCTIONAL DESCRIPTION
INTRODUCTION
The 34701 power supply integrated circuit provides the
means to efficiently supply the Freescale Power QUICC and
other families of Freescale microprocessors. It incorporates a
high performance synchronous buck regulator, supplying the
microprocessor’s core, and a low dropout (LDO) linear
regulator providing the microprocessor I/O and bus voltages.
This device incorporates many advanced features; e.g.,
precisely maintained up/down power sequencing, ensuring
the proper operation and protection of the CPU and power
system. At the same time, it provides high flexibility of
configuration, allowing the maximum optimization of the
power supply system.
FUNCTIONAL PIN DESCRIPTION
OSCILLATOR FREQUENCY PIN (FREQ)
This switcher frequency selection pin can be adjusted by
connecting external resistor RF to the FREQ pin. The default
switching frequency (FREQ pin left open or tied to VDDI) is
set to 300kHz.
BOOTSTRAP PIN (BOOT)
Bootstrap capacitor input.
SERIAL DATA PIN (SDA)
I 2 C bus pin. Serial data.
INVERTING INPUT PIN (INV)
Buck Controller Error Amplifier inverting input.
OUTPUT VOLTAGE PIN (VOUT)
Output voltage of the buck converter. Input pin of the
switching regulator power sequence control circuit.
INPUT VOLTAGE 2 PINS (VIN2)
Buck regulator power input. Drain of the high side power
MOSFET.
SWITCH PINS (SW)
Buck regulator switching node. This pin is connected to the
inductor.
GROUND PINS (GND)
Analog ground of the IC, thermal heatsinking.
POWER GROUND PINS (PGND)
Buck regulator power ground.
BOOST DRAIN PIN (VBD)
Drain of the internal boost regulator power MOSFET.
BOOST VOLTAGE PIN (VBST)
Internal boost regulator output voltage. The internal boost
regulator provides a 20mA output current to supply the drive
circuits for the integrated power MOSFETs and the external
N-channel power MOSFET of the linear regulator. The
voltage at the VBST pin is 7.75V nominal.
SERIAL CLOCK PIN (SCL)
I 2 C bus pin. Serial clock.
LINEAR COMPENSATION PIN (LCMP)
Linear regulator compensation pin.
LINEAR FEEDBACK PIN (LFB)
Linear regulator feedback pin.
LINEAR REGULATOR PIN (LDO)
Input pin of the linear regulator power sequence control
circuit.
CURRENT SENSE PIN (CS)
Current sense pin of the LDO. Over-current protection of
the linear regulator external power MOSFET. The voltage
drop over the LDO current sense resistor RS is sensed
between the CS and LDO pins. The LDO current limit can be
adjusted by selecting the proper value of the current sensing
resistor RS.
LINEAR DRIVE PIN (LDRV)
LDO gate drive of the external pass N-channel MOSFET.
INPUT VOLTAGE 1 PIN (VIN1)
The input supply pin for the integrated circuit. The internal
circuits of the IC are supplied through this pin.
34701
Analog Integrated Circuit Device Data ?
16
Freescale Semiconductor
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相关代理商/技术参数 |
参数描述 |
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| 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 |
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