参数资料
| 型号： | MC34716EPR2 |
| 厂商： | Freescale Semiconductor |
| 文件页数： | 13/27页 |
| 文件大小： | 0K |
| 描述： | IC CONVERTER DDR 26QFN |
| 标准包装： | 2,500 |
| 应用： | 转换器，DDR |
| 输入电压： | 3 V ~ 6 V |
| 输出数： | 2 |
| 输出电压： | 0.7 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 26-VFQFN 裸露焊盘 |
| 供应商设备封装： | 26-QFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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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
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相关代理商/技术参数 |
参数描述 |
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| MC34717 | 制造商:SPC Multicomp 功能描述:HEADER R/ANGLE 4WAY 制造商:SPC Multicomp 功能描述:HEADER, R/ANGLE, 4WAY 制造商:SPC Multicomp 功能描述:WIRE-BOARD CONN, RECEPTACLE, 4POS, 3MM; Series:2261(5561); Pitch Spacing:3mm; Contact Termination:Through Hole Right Angle; No. of Contacts:4; No. of Rows:2; Connector Mounting:PCB; Gender:Receptacle; Contact Material:Copper Alloy ;RoHS Compliant: Yes |
| MC34717EP | 功能描述:开关变换器、稳压器与控制器 5.0A 1.0MHZ DUAL SWITCH RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34717EPR2 | 功能描述:开关变换器、稳压器与控制器 5.0A 1.0MHZ DUAL SWITCH RoHS:否 制造商:Texas Instruments 输出电压:1.2 V to 10 V 输出电流:300 mA 输出功率: 输入电压:3 V to 17 V 开关频率:1 MHz 工作温度范围: 安装风格:SMD/SMT 封装 / 箱体:WSON-8 封装:Reel |
| MC34719 | 制造商:SPC Multicomp 功能描述:HEADER VERTICAL 4WAY |
| MC3471P | 制造商:Motorola Inc 功能描述: |
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