Datasheet > ACE111750XM+H

ACE111750XM+H

更新时间： 2022-12-14 15:02:19

品牌	Logo	应用领域
ACE		稳压器
页数	文件大小	规格书
8页	266K
描述
1A Positive Voltage Regulators

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ACE111750XM+H 数据手册

ACE1117

1A Positive Voltage Regulators

Technology

Output Capacitor

An output capacitor of 22uF is recommended for better transient and PSRR performance. It should be

placed no more than 1 cm away from the V_OUTpin, and connected directly between V_OUTand GND pins.

The value may be increased without upper limit.

Thermal Considerations

It is important that the thermal limit of the package is not exceeded. The ACE1117 has built-in thermal

protection. When the thermal limit is exceeded, the IC will enter protection, and VOUT will be pulled to

ground. The power dissipation for a given application can be calculated as following:

The power dissipation (P_D) is P_D= I_OUT* [V_IN– V_OUT

]

The thermal limit of the package is then limited to P_D(MAX)= [T_J– T_A]/Θ_JAwhere T_Jis the junction

temperature, T_Ais the ambient temperature, and Θ_JAis around 180°C/W for ACE1117. ACE1117 is

designed to enter thermal protection at 175°C. For example, if TA is 25°C then the maximum PD is limited

to about 0.83W. In other words, if I_OUT(MAX)= 500mA, then [V_IN– V_OUT] can not exceed 1.66V. (Ref.

SOT-223 without heat sink.)

Typical Performance Characteristic

Reference Voltage vs Junction Temperature

Output Voltage vs Junction Temperature

Junction Temperature (℃)

VER 1.3

1 2 345 6 7 8

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