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LP87702 데이터시트(PDF) 24 Page - Texas Instruments

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부품명 LP87702
상세설명  LP87702-Q1 Dual Buck Converter and 5-V Boost With Diagnostic Functions
PDF  99 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

LP87702 데이터시트(HTML) 24 Page - Texas Instruments

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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)
0
0
1
Voltage decrease because of load
BOOST_STATUS(BOOST_STAT)
0
0
1
0
1
1
0
0
1
0 1
0
BOOST_MASK(BOOST_PGF_MASK) = 0
BOOST_MASK(BOOST_PGR_MASK) = 0
1
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
www.ti.com
24
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