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LP8733 데이터시트(PDF) 33 Page - Texas Instruments

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부품명 LP8733
상세설명  LP8733xx Dual High-Current Buck Converter and Dual Linear Regulator
PDF  86 Pages
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제조업체  TI [Texas Instruments]
홈페이지  http://www.ti.com
Logo TI - Texas Instruments

LP8733 데이터시트(HTML) 33 Page - Texas Instruments

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V(VANA)
VANA_UVLO
State Shutdown
Read
OTP
Standby
PGOOD pin
EN pin
VOUT (Buck1)
VOUT (LDO0)
Buck1 internal powergood
LDO0 internal powergood
Active
Buck1 internal enable
LDO0 internal enable
4 ms
2 ms
33
LP8733
www.ti.com
SNVSBK2 – SEPTEMBER 2019
Product Folder Links: LP8733
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
Figure 19. PGOOD Pin Operation in Continuous Mode
7.3.8.2 Warnings for Diagnosis (Interrupt)
7.3.8.2.1
Output Power Limit
The Buck regulators have programmable output peak current limits. The limits are individually programmed for
both regulators with the BUCKx_ILIM[2:0] bits in the BUCKx_CTRL_2 register. The current limit settings of
master and slave regulators used for the same output voltage rail must be identical. If the load current is
increased so that the current limit is triggered, then the regulator continues to regulate at the limit current level
(peak current regulation). The voltage may decrease if the load current is higher than the limit current. If the
current regulation continues for 20 µs, than the LP8733xx device sets the BUCKx_ILIM_INT bit in the INT_BUCK
register and pulls the nINT pin low. The host processor can read the BUCKx_ILIM_STAT bits in the BUCK_STAT
register to see if the regulator is still in peak current regulation mode, and the interrupt is cleared by writing 1 to
the BUCKx_ILIM_INT bit. The current limit interrupt can be masked by setting the BUCKx_ILIM_MASK bit in the
BUCK_MASK register to 1. The Buck overload situation is shown in Figure 20.



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