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LP8733 датащи(PDF) 16 Page - Texas Instruments

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номер детали LP8733
подробное описание детали  LP8733xx-Q1 Dual High-Current Buck Converter and Dual Linear Regulator
PDF  85 Pages
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производитель  TI [Texas Instruments]
домашняя страница  http://www.ti.com
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LP8733 датащи(HTML) 16 Page - Texas Instruments

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LP8733-Q1
SNVSB64 – SEPTEMBER 2018
www.ti.com
Submit Documentation Feedback
Copyright © 2018, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
The LP8733xx-Q1 is a high-efficiency, high-performance flexible power supply device with two step-down DC/DC
converter cores (Buck0 and Buck1) and two low-dropout (LDO) linear regulators (LDO0 and LDO1) for
automotive applications. The cores can be configured for a two single-phase output and dual-phase single output
configuration. Table 1 lists the output characteristics of the regulators.
Table 1. Supply Specification
SUPPLY
OUTPUT
VOUT RANGE (V)
RESOLUTION (mV)
IMAX MAXIMUM OUTPUT CURRENT (mA)
Buck0 (single-phase)
0.7 to 3.36
10 (0.7 V to 0.73 V)
5 (0.73 V to 1.4 V)
20 (1.4 V to 3.36 V)
3000
Buck1 (single-phase)
0.7 to 3.36
10 (0.7 V to 0.73 V)
5 (0.73 V to 1.4 V)
20 (1.4 V to 3.36 V)
3000
Buck0/1 (dual-phase)
0.7 to 3.36
10 (0.7 V to 0.73 V)
5 (0.73 V to 1.4 V)
20 (1.4 V to 3.36 V)
6000
LDO0
0.8 to 3.3
100
300
LDO1
0.8 to 3.3
100
300
The LP8733xx-Q1 also supports switching clock synchronization to an external clock (CLKIN pin). The nominal
frequency of the external clock can be from 1 MHz to 24 MHz with 1-MHz steps.
Additional features include:
•
Soft-start
•
Input voltage protection:
–
Undervoltage lockout
–
Overvoltage protection
•
Output voltage monitoring and protection:
–
Overvoltage monitoring
–
Undervoltage monitoring
–
Overload protection
•
Thermal warning
•
Thermal shutdown
The LP8733xx-Q1 has one dedicated general purpose digital output (GPO) signal. CLKIN pin can be
programmed as a second GPO signal (GPO2) if external clock is not needed. The output type (open-drain or
push-pull) is programmable for the GPOs.



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