参数资料
| 型号： | MCP1725T-1802E/MC |
| 厂商： | Microchip Technology |
| 文件页数： | 19/32页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.8V .5A 8DFN |
| 产品培训模块： | High Current LDOs |
| 标准包装： | 3,300 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 1.8V |
| 输入电压： | 2.3 V ~ 6 V |
| 电压 - 压降（标准）： | 0.21V @ 500mA |
| 稳压器数量： | 1 |
| 电流 - 输出： | 500mA（最小） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘 |
| 供应商设备封装： | 8-DFN（2x3） |
| 包装： | 带卷 (TR) |
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MCP1725
4.8
Dropout Voltage and
4.9
Overtemperature Protection
Undervoltage Lockout
Dropout voltage is defined as the input-to-output
voltage differential at which the output voltage drops
2% below the nominal value that was measured with a
V R + 0.6V differential applied. The MCP1725 LDO has
a very low dropout voltage specification of 210 mV
“Electrical Characteristics” for maximum dropout
voltage specifications.
The MCP1725 LDO operates across an input voltage
range of 2.3V to 6.0V and incorporates input Undervolt-
age Lockout (UVLO) circuitry that keeps the LDO
output voltage off until the input voltage reaches a
minimum of 2.18V (typical) on the rising edge of the
input voltage. As the input voltage falls, the LDO output
will remain on until the input voltage level reaches
2.04V (typical).
Since the MCP1725 LDO undervoltage lockout
activates at 2.04V as the input voltage is falling, the
dropout voltage specification does not apply for output
voltages that are less than 1.9V.
For high-current applications, voltage drops across the
PCB traces must be taken into account. The trace
resistances can cause significant voltage drops
between the input voltage source and the LDO. For
applications with input voltages near 2.3V, these PCB
trace voltage drops can sometimes lower the input
voltage enough to trigger a shutdown due to
undervoltage lockout.
? 2007 Microchip Technology Inc.
The MCP1725 LDO has temperature-sensing circuitry
to prevent the junction temperature from exceeding
approximately 150 ° C. If the LDO junction temperature
does reach 150 ° C, the LDO output will be turned off
until the junction temperature cools to approximately
140 ° C, at which point the LDO output will automatically
resume normal operation. If the internal power
dissipation continues to be excessive, the device will
again shut off. The junction temperature of the die is a
function of power dissipation, ambient temperature and
cation Circuits/Issues” for more information on LDO
power dissipation and junction temperature.
DS22026B-page 19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MCP1725T-2502E/MC | 功能描述:低压差稳压器 - LDO 500mA CMOS LDO Vout=2.5V 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 |
| MCP1725T-2502E/SN | 功能描述:低压差稳压器 - LDO 500mA CMOS LDO Vout=2.5V 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 |
| MCP1725T-3002E/MC | 功能描述:低压差稳压器 - LDO 500mA CMOS LDO Vout=3.0V 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 |
| MCP1725T-3002E/SN | 功能描述:低压差稳压器 - LDO 500mA CMOS LDO Vout=3.0V 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 |
| MCP1725T-3302E/MC | 功能描述:低压差稳压器 - LDO 500mA CMOS LDO Vout=3.3V 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 |
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