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TL720M05QPWPRQ1 데이터시트(PDF) 9 Page - Texas Instruments

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부품명 TL720M05QPWPRQ1
상세설명  Low-Dropout Voltage Regulator
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제조업체  TI1 [Texas Instruments]
홈페이지  http://www.ti.com
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TL720M05QPWPRQ1 데이터시트(HTML) 9 Page - Texas Instruments

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IN
OUT
Saturation
Control and
Protection
Circuit
T
Sensor
emperature
Bandgap
Reference
GND
TL720M05-Q1
www.ti.com
SGLS380H – SEPTEMBER 2008 – REVISED JULY 2015
8 Detailed Description
8.1 Overview
The TL720M05-Q1 device is a monolithic integrated low-dropout voltage regulator offered in a 3-pin TO package.
The device regulates an input voltage up to 45 V to VOUT = 5 V (typical) with 2% tolerance. The device can
drive loads up to 450 mA and is short-circuit proof. At overtemperature, the incorporated temperature protection
turns off the device.
8.2 Functional Block Diagram
8.3 Feature Description
8.3.1 Regulated Output (OUT)
The OUT terminal is the regulated 5-V output. 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 output has
current limitation. In the event that the regulator drops out of regulation, the output tracks the input minus a drop
based on the load current.
8.4 Device Functional Modes
8.4.1 Low-Voltage Tracking
At low input voltages, the regulator drops out of regulation and the output voltage tracks input minus a voltage
based on the load current and switch resistance. This allows for a smaller input capacitor and can possibly
eliminate the need of using a boost convertor during cold-crank conditions.
Copyright © 2008–2015, Texas Instruments Incorporated
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