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LP87332DRHDR Datasheet(PDF) 21 Page - Texas Instruments

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Part # LP87332DRHDR
Description  Dual High-Current Buck Converter and Dual Linear Regulator
PDF  74 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

LP87332DRHDR Datasheet(HTML) 21 Page - Texas Instruments

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Enable
Time
Voltage
Resistive pull-down
(if enabled)
LDOx_VSET[4:0]
INT_LDO(LDOx_PG_INT)
nINT
Host clears
interrupts
Powergood
interrupts
Powergood
LDO_STAT(LDOx_PG_STAT)
0
0
1
Voltage decrease because of load
LDO_STAT(LDOx_STAT)
0
0
1
0
1
1
0
0
1
0 1
0
LDO_MASK(LDOx_PGF_MASK) = 0
LDO_MASK(LDOx_PGR_MASK) = 0
1
0
21
LP87332D
www.ti.com
SNVSAU6 – NOVEMBER 2017
Product Folder Links: LP87332D
Submit Documentation Feedback
Copyright © 2017, Texas Instruments Incorporated
Figure 10. LDO Regulator Enable and Disable
The EN input pin have an integrated pulldown resistor. The pulldown resistor is controlled with EN_PD bit in
CONFIG register.
7.3.5.2 Changing Output Voltage
The output voltage of the regulator can be changed by writing to the BUCKx_VOUT / LDOx_VOUT register. The
voltage change for buck regulator is always slew-rate controlled, and the slew-rate is defined by the
BUCKx_SLEW_RATE[2:0] bits in BUCKx_CTRL_2 register. During voltage change the forced PWM mode is
used automatically. When the programmed output voltage is achieved, the mode becomes the one defined by
load current, and the BUCKx_FPWM bit in BUCKx_CTRL_1 register.
The voltage change and Power-Good interrupts are shown in Figure 11.



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