台湾友顺 ULE4275 5V低压差稳压器具备汽车应用资格

¥0.01 ≥3000个起批

参数

低电流消耗产品特性
UTC/友顺品牌
ULE4275型号

发货地广东深圳 3天内发货供货总量40000个

深圳市科瑞芯电子有限公司 2年: 进入店铺在线咨询

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产品详情

深圳市科瑞芯电子有限公司为UTC/友顺的授权代理商，商品原厂原装

供应5V低压差稳压器，可为终端客户提供样品及技术支持！

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型号：ULE4275

封装：TO-263-5

品牌：UTC/友顺

DESCRIPTION

The UTC ULE4275 is a monolithic integrated low-dropout voltage regulator. The device regulates an input voltage up to 45V to VOUT = 5V (typical). The device can drive loads up to 450mA. It also provides overcurrent protection and overtemperature protection for control of the state of the output voltage. The device generates a reset signal for an output voltage, VOUT,rt, of 4.65V (typical). By the use of an external delay capacitor, one can program the reset delay time.

The input capacitor, CIN, compensates for line fluctuation. Using a resistor of approximately 1Ω in series with CIN dampens the oscillation of input inductance and input capacitance. The output capacitor, COUT, stabilizes the regulation circuit. The specification for stability is at COUT ≥ 22μF and ESR ≤ 5Ω, within the operating temperature range. Stability for electrolytic capacitors specifically is at COUT ≥ 68μF within the operating temperature range.

The control amplifier compares a reference voltage to a voltage that is proportional to the output voltage and drives the base of the series transistor through a buffer. Saturation control as a function of the load current prevents any oversaturation of the power element. The device also incorporates a number of internal circuits for protection against: overload, overtemperature, and reverse polarity.

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