参数资料
| 型号： | NCP4626HMX050TCG |
| 厂商： | ON Semiconductor |
| 文件页数： | 24/28页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 5V .3A 6XDFN |
| 标准包装： | 5,000 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 5V |
| 输入电压： | 最高 16V |
| 电压 - 压降（标准）： | 0.7V @ 300mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 300mA（最小） |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 6-XFDFN 裸露焊盘 |
| 供应商设备封装： | 6-XDFN（1.6x1.6） |
| 包装： | 带卷 (TR) |
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NCP4626
APPLICATION INFORMATION
A typical application circuit for NCP4626 series is shown
in Figure 84.
current capability in normal operation, but when over
current occurs, output voltage and current decrease until
over current condition ends. Typical characteristics of this
VIN
C1
2 m 2
NCP4626x
VIN VOUT
CE
AE
GND
VOUT
C2
4 m 7
protection type can be observed in the Output Voltage versus
Output Current graphs shown in the typical characteristics
chapter of this datasheet.
ECO Function
The IC can be switched between two modes by ECO pin.
One mode is low power mode, where IC’s self current
consumption is low, but IC has slower dynamic behavior or
in to fast mode, where current consumption is higher, but the
IC has better dynamic response and lower dropout voltage.
Figure 84. Typical Application Schematic
Input Decoupling Capacitor (C1)
A 2.2 m F (or larger) ceramic input decoupling capacitor
should be connected as close as possible to the input and
ground pin of the NCP4626. Higher capacitor values and
lower ESR improves line transient response.
Output Decoupling Capacitor (C2)
A 4.7 m F (or larger) ceramic output decoupling capacitor
is sufficient to achieve stable operation of the IC. It is
necessary to use a capacitor with good frequency
characteristics and low ESR. The capacitor should be
connected as close as possible to the output and ground pins.
Larger capacitor values and lower ESR improves dynamic
parameters.
Enable Operation
The enable pin CE may be used to turn the regulator on and
off. The IC is switched on when a high level voltage is
applied to the CE pin. The enable pin has an internal pull
down resistor. If the enable function is not needed, connect
the CE pin to VIN.
Output Discharger
The D version of the NCP4626 includes a transistor
between VOUT and GND that is used for faster discharging
of the output capacitor. This function is activated when the
IC goes into disable mode.
Current Limit
Do not leave the ECO pin unconnected or between V CEH
and V CEL voltage levels as this may cause indefinite and
unexpected currents flows internally.
Thermal Considerations
As power across the IC increases, it might become
necessary to provide some thermal relief. The maximum
power dissipation supported by the device is dependent
upon board design and layout. Mounting pad configuration
on the PCB, the board material, and the ambient temperature
effect the rate of temperature rise for the part. That is to say,
when the device has good thermal conductivity through the
PCB, the junction temperature will be relatively low with
high power dissipation applications.
The IC includes internal thermal shutdown circuit that
stops the regulator operating if the junction temperature is
higher than 150 ° C. After shutdown, when the junction
temperature decreases below 130 ° C, the voltage regulator
would restarts. As long as the high power dissipation
condition exists, the regulator will start and stop repeatedly
to protect itself against overheating. Care should be taken in
the PCB layout to try to avoid this temperature cycling
condition.
PCB Layout
Make the VIN and GND lines as large as possible. If their
impedance is high, noise pickup or unstable operation may
result. Connect capacitors C1 and C2 as close as possible to
the IC, and make wiring as short as possible. The tab under
the XDFN package is internally connected to GND: it is best
practice to connect it to GND on the PCB, but leaving it
unconnected is also acceptable.
This regulator includes fold-back type current limit
circuit. This type of protection doesn’t limit current up to
http://onsemi.com
24
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相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP4626HSN030T1G | 功能描述:低压差稳压器 - LDO 300MA LDO REGULATOR RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCP4626HSN033T1G | 功能描述:低压差稳压器 - LDO 300MA LDO REGULATOR RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCP4626HSN045T1G | 功能描述:低压差稳压器 - LDO 300MA LDO REGULATOR RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCP4626HSN050T1G | 功能描述:低压差稳压器 - LDO 300MA LDO REGULATOR RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| NCP4629 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:500 mA, Wide Input Range, LDO Linear Voltage Regulator |
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