TLV707P datasheet(21/41 Pages) TI1

номер детали	TLV707P

подробное описание детали	200-mA, Low-IQ, Low-Noise, Low-Dropout Regulator for Portable Devices

PDF	41 Pages

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производитель	TI1 [Texas Instruments]

домашняя страница	http://www.ti.com

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TLV707, TLV707P

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SBVS153E – FEBRUARY 2011 – REVISED FEBRUARY 2016

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Although an input capacitor is not required for stability, good analog design practice is to connect a 0.1-

μF to

1.0-

μF, low ESR capacitor across the IN pin and GND pin of the regulator. This capacitor counteracts reactive

input sources and improves transient response, noise rejection, and ripple rejection. A higher-value capacitor

may be necessary if large, fast rise-time load transients are anticipated, or if the device is not located close to the

power source. If source impedance is more than 2-

Ω, a 0.1-μF input capacitor may be necessary to ensure

stability.

8.2.2.2 Dropout Voltage

The TLV707 series of LDOs use a PMOS pass transistor to achieve low dropout. When (VIN – VOUT) is less than

the dropout voltage (VDO), the PMOS pass device is in the linear region of operation and the input-to-output

resistance is the RDS(ON) of the PMOS pass element. VDO scales approximately with output current because the

PMOS device functions similar to a resistor in dropout.

As with any linear regulator, PSRR and transient response are degraded when (VIN – VOUT) approaches dropout.

8.2.2.3 Transient Response

As with any regulator, increasing the size of the output capacitor reduces over- and undershoot magnitude but

increases the duration of the transient response.

TLV707P датащи(PDF) 21 Page - Texas Instruments