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TLV755P Datasheet(PDF) 12 Page - Texas Instruments

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No. de pieza TLV755P
Descripción Electrónicos  TLV755P 500mA, Low-IQ, Small-Size, Low-Dropout Regulator
PDF  49 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

TLV755P Datasheet(HTML) 12 Page - Texas Instruments

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6 Detailed Description
6.1 Overview
The TLV755P low-dropout regulator (LDO) consumes low quiescent current and delivers excellent line and
load transient performance. The TLV755P is optimized for a wide variety of applications by supporting an input
voltage range from 1.45V to 5.5V. To minimize cost and solution size, the device is offered in fixed output
voltages ranging from 0.6V to 5V to support the lower core voltages of modern microcontrollers (MCUs).
This regulator offers foldback current limit, shutdown, and thermal protection. The operating junction temperature
is –40°C to +125°C.
6.2 Functional Block Diagram
+
±
Bandgap
Thermal
Shutdown
UVLO
Logic
Current
Limit
120 Ÿ
IN
EN
GND
OUT
R1
R2
R2 = 550kΩ, R1 = adjustable.
6.3 Feature Description
6.3.1 Undervoltage Lockout (UVLO)
An undervoltage lockout (UVLO) circuit disables the output until the input voltage is greater than the rising UVLO
voltage (VUVLO). This circuit makes sure the device does not exhibit unpredictable behavior when the supply
voltage is lower than the operational range of the internal circuitry. When VIN is less than VUVLO, the output is
connected to ground with a 120Ω pulldown resistor.
6.3.2 Enable (EN)
The enable pin (EN) is active high. Enable the device by forcing the EN pin to exceed VHI. Turn off the device by
forcing the EN pin below VLO. If shutdown capability is not required, connect EN to IN.
The device has an internal pulldown that connects a 120Ω resistor to ground when the device is disabled. The
discharge time after disabling depends on the output capacitance (COUT) and the load resistance (RL) in parallel
with the 120Ω pulldown resistor. Equation 1 calculates the time constant τ:
t
=
120·R
L
120+R
L
·C
OUT
(1)
TLV755P
SBVS320D – NOVEMBER 2017 – REVISED SEPTEMBER 2024
www.ti.com
12
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Copyright © 2024 Texas Instruments Incorporated
Product Folder Links: TLV755P



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