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参数资料
| 型号： | KIT33701DWBEVB |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 17/39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
FUNCTIONAL PIN DESCRIPTION
POWER SUPPLY PIN (VDDI)
Internal supply voltage. A ceramic low ESR 1uF 6V X5R or
X7R capacitor is recommended.
ADDRESS PIN (ADDR)
The ADDR pin is used to set the address of the device
when used in an I 2 C communication. This pin can either be
tied to VDDI or grounded through a 10k ? resistor. Refer to
pin.
ENABLE 1 AND 2 PINS (EN1 AND EN2)
These two pins permit positive logic control of the Enable
function and selection of the Power Sequencing mode
concurrently. Table 5 depicts the EN1 and EN2 function and
Power Sequencing mode selection.
Both EN1 and EN2 pins have internal pull-down resistors
and both can withstand a short circuit to the supply voltage,
6.0V.
RESET TIMER PIN (RT)
The Reset Timer power-up delay (RT) pin is used to set
the delay between the time when the LDO and switcher
outputs are active and stable and the RST output is released.
An external resistor and capacitor are used to program the
timer. The power-up delay can be obtained by using the
following formula:
t D = 10ms + R t C t
Where R t is the Reset Timer programming resistor and C t
is the Reset Timer programming capacitor, both connected in
parallel from RT to ground.
Note Observe the maximum C t value and expect reduced
accuracy if R t is less than 10k ? .
RESET OUTPUT PIN ( RST )
The Reset Control circuit monitors both the switching
regulator and the LDO feedback voltages. It is an open drain
output and has to be pulled up to some supply voltage (e.g.,
the output of the LDO) by an external resistor.
The Reset Control circuit supervises both output
Table 5.
Operating Mode Selection
voltages—the linear regulator output V LDO and the switching
EN1
0
0
1
1
EN2
0
1
0
1
Operating Mode
Regulators Disabled
Standard Power Sequencing
Inverted Power Sequencing
No Power Sequencing,
Regulators Enabled
regulator output V OUT . When either of these two regulators
is out of regulation (high or low), the RST pin is pulled low.
There is a 20 ? s delay filter preventing erroneous resets.
During power-up sequencing, RST is held low until the Reset
Timer times out.
CLOCK SELECTION PIN (CLKSEL)
This pin sets the CLKSYN pin as either an oscillator output
or a synchronization input pin. The CLKSEL pin is also used
for the I 2 C address selection.
CLOCK SYNCHRONIZATION PIN (CLKSYN)
Oscillator output/synchronization input pin.
34701
Analog Integrated Circuit Device Data ?
Freescale Semiconductor
17
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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 |
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