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TLE4275Q1

更新时间： 2024-11-23 03:07:51
品牌 Logo 应用领域
德州仪器 - TI 稳压器
页数 文件大小 规格书
12页 314K
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5-V LOW-DROPOUT VOLTAGE REGULATOR

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TLE4275Q1 数据手册

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TLE4275-Q1  
5-V LOW-DROPOUT VOLTAGE REGULATOR  
www.ti.com  
SLVS647–AUGUST 2006  
FEATURES  
KTT PACKAGE  
(TOP VIEW)  
•
•
•
•
•
•
•
•
•
Qualified for Automotive Applications  
Output Voltage 5 V ± 2%  
OUT  
5
4
3
2
1
Very Low Current Consumption  
Power-On and Undervoltage Reset  
Reset Low-Level Output Voltage < 1 V  
Very Low Dropout Voltage  
Short-Circuit Proof  
DELAY  
GND  
RESET  
IN  
Reverse-Polarity Proof  
ESD Protection > 6 kV  
DESCRIPTION/ORDERING INFORMATION  
The TLE4275 is a monolithic integrated low-dropout voltage regulator offered in a 5-pin TO package. An input  
voltage up to 45 V is regulated to VOUT = 5 V (typ). The device can drive loads up to 450 mA and is short-circuit  
proof. At overtemperature, the TLE4275 is turned off by the incorporated temperature protection. A reset signal  
is generated for an output voltage, VOUT,rt, of 4.65 V (typ). The reset delay time can be programmed by the  
external delay capacitor.  
The input capacitor, CIN, compensates for line fluctuation. Using a resistor of approximately 1 Ω, in series with  
CIN, dampens the oscillation of input inductivity and input capacitance. The output capacitor, COUT, stabilizes the  
regulation circuit. Stability is specified at COUT ≥ 22 µF and ESR ≤ 5 Ω, 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 via 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  
Reverse polarity  
ORDERING INFORMATION  
TJ  
PACKAGE(1)  
ORDERABLE PART NUMBER  
TLE4275QKTTRQ1  
TOP-SIDE MARKING  
–40°C to 150°C  
TO-263 – KTT  
Reel of 500  
TLE4275Q1  
(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at  
www.ti.com/sc/package.  
TERMINAL FUNCTIONS  
NO.  
1
NAME  
IN  
DESCRIPTION  
Input. Connect to ground as close to device as possible, through a ceramic capacitor.  
Reset output. Open-collector output.  
2
RESET  
GND  
3
Ground. Internally connected to heatsink.  
4
DELAY  
OUT  
Reset delay. Connect to ground with a capacitor to set delay time.  
Output. Connect to ground with ≥22-µF capacitor, ESR < 5 Ω at 10 kHz.  
5
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas  
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2006, Texas Instruments Incorporated  
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