LP87702 datasheet(24/99 Pages) TI

No. de pieza	LP87702

Descripción Electrónicos	LP87702-Q1 Dual Buck Converter and 5-V Boost With Diagnostic Functions

PDF	99 Pages

Scroll/Zoom	100%

Fabricante Electrónico	TI [Texas Instruments]

Página de inicio	http://www.ti.com

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24 / 99 page

Enable

Time

Voltage

Resistive pull-down

(if enabled)

BOOST_VSET[1:0]

INT_BOOST(BOOST_PG_INT)

nINT

Host clears

interrupts

Powergood

interrupts

BOOST_STATUS(BOOST_PG_STAT)

Voltage decrease because of load

BOOST_STATUS(BOOST_STAT)

0 1

BOOST_MASK(BOOST_PGF_MASK) = 0

BOOST_MASK(BOOST_PGR_MASK) = 0

BOOST_WINDOW[1:0]

Figure 8-5. Boost Converter Enable and Disable

8.3.6.2 Changing Buck Output Voltage

The output voltage of BUCKx converter can be changed by writing to the BUCKx_VOUT register. The

voltage change for buck converter is always slew-rate controlled, and the slew-rate is defined by the

BUCKx_SLEW_RATE[2:0] bits in BUCKx_CTRL_2 register. The forced PWM mode is used automatically during

a voltage change. When the programmed output voltage is achieved, the mode becomes the one defined by

load current, and the BUCKx_FPWM bit.

Figure 8-6 shows the voltage change and power-good interrupts.

LP87702-Q1

SNVSAL1C – DECEMBER 2017 – REVISED JUNE 2021

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LP87702 Datasheet(PDF) 24 Page - Texas Instruments