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线性和低压降 (LDO) 稳压器

TLE4275-Q1

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具有复位延迟功能的汽车类 450mA、电池供电运行 (42V)、低压降稳压器

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TLE4275-Q1

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产品详情

Output options Fixed Output Iout (max) (A) 0.45 Vin (max) (V) 42 Vin (min) (V) 5.5 Vout (max) (V) 5 Vout (min) (V) 5 Fixed output options (V) 5 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 33 Rating Automotive Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Power good, Reverse voltage protection Accuracy (%) 2 PSRR at 100 KHz (dB) 27 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
Output options Fixed Output Iout (max) (A) 0.45 Vin (max) (V) 42 Vin (min) (V) 5.5 Vout (max) (V) 5 Vout (min) (V) 5 Fixed output options (V) 5 Iq (typ) (mA) 5 Thermal resistance θJA (°C/W) 33 Rating Automotive Load capacitance (min) (µF) 10 Regulated outputs (#) 1 Features Power good, Reverse voltage protection Accuracy (%) 2 PSRR at 100 KHz (dB) 27 Dropout voltage (Vdo) (typ) (mV) 250 Operating temperature range (°C) -40 to 125
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4 TO-252 (KVU) 5 66.726 mm² 6.6 x 10.11 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Qualified for Automotive Applications
  • Output Voltage 5 V ± 2%
  • Very Low Current Consumption
  • Power-On and Undervoltage Reset
  • Reset Low-Level Output Voltage < 1 V
  • Very Low Dropout Voltage
  • Short-Circuit Proof
  • Reverse-Polarity Proof
  • Qualified for Automotive Applications
  • Output Voltage 5 V ± 2%
  • Very Low Current Consumption
  • Power-On and Undervoltage Reset
  • Reset Low-Level Output Voltage < 1 V
  • Very Low Dropout Voltage
  • Short-Circuit Proof
  • Reverse-Polarity Proof

The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. The device regulates an input voltage up to 45 V to VOUT = 5 V (typ). The device can drive loads up to 450 mA and is short-circuit proof. At overtemperature, the incorporated temperature protection turns off the TLE4275. The device generates a reset signal for an output voltage, VOUT,rt, of 4.65 V (typ). 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 1 Ω 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 ≥ 22 µF and ESR ≤ 5 Ω, within the operating temperature range. Stability for electrolytic capacitors specifically is at COUT ≥ 68 µF within the operating temperature range. See the application report on low-temperature stability, SLVA501, for further details.

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.

The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. The device regulates an input voltage up to 45 V to VOUT = 5 V (typ). The device can drive loads up to 450 mA and is short-circuit proof. At overtemperature, the incorporated temperature protection turns off the TLE4275. The device generates a reset signal for an output voltage, VOUT,rt, of 4.65 V (typ). 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 1 Ω 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 ≥ 22 µF and ESR ≤ 5 Ω, within the operating temperature range. Stability for electrolytic capacitors specifically is at COUT ≥ 68 µF within the operating temperature range. See the application report on low-temperature stability, SLVA501, for further details.

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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技术文档

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类型 标题 下载最新的英语版本 日期
* 数据表 TLE4275-Q1 5-V Low-Dropout Voltage Regulator 数据表 (Rev. I) PDF | HTML 2014年 11月 4日
应用手册 LDO 噪声揭秘 (Rev. B) PDF | HTML 英语版 (Rev.B) PDF | HTML 2020年 9月 16日
应用手册 LDO PSRR Measurement Simplified (Rev. A) PDF | HTML 2017年 8月 9日
技术文章 Discrete SBCs: versatile and scalable solutions for any application PDF | HTML 2017年 7月 27日
更多文献资料 Fundamentals of designing with LDOs in auto battery direct connect applications 2017年 2月 27日
应用手册 TLE4275 Low Temperature Stability 2012年 1月 18日
应用手册 简化的 LDO PSRR 测量 最新英语版本 (Rev.A) PDF | HTML 2010年 7月 28日

设计和开发

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评估板

MLTLDO2EVM-037 — 用于 DCY、DDA 和 KVU 封装的通用 LDO 线性稳压器评估模块

借助采用多种封装选项的 MLTLDO2EVM-037 低压降 (LDO) 评估模块 (EVM)，设计工程师能评估可能用于其自身电路应用的线性稳压器采用多种常见封装时的运行情况和性能。这种 EVM 配置包含一个 DDA、3 引脚和 5 引脚 KVU 以及 DCY 封装，便于工程师焊接和评估部件。

用户指南: PDF
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封装 引脚 下载
HTSSOP (PWP) 20 查看选项
TO-252 (KVU) 5 查看选项
TO-263 (KTT) 5 查看选项
应遵守 TI 评估类商品的标准条款与条件。

订购和质量

包含信息：
  • RoHS
  • REACH
  • 器件标识
  • 引脚镀层/焊球材料
  • MSL 等级/回流焊峰值温度
  • MTBF/时基故障估算
  • 材料成分
  • 鉴定摘要
  • 持续可靠性监测
包含信息：
  • 制造厂地点
  • 封装厂地点

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