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LP8733 bảng dữ liệu(PDF) 16 Page - Texas Instruments

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tên linh kiện LP8733
Giải thích chi tiết về linh kiện  LP8733xx Dual High-Current Buck Converter and Dual Linear Regulator
PDF  82 Pages
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Trang chủ  http://www.ti.com
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LP8733 bảng dữ liệu(HTML) 16 Page - Texas Instruments

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LP8733
SNVSBK2 – SEPTEMBER 2019
www.ti.com
Product Folder Links: LP8733
Submit Documentation Feedback
Copyright © 2019, Texas Instruments Incorporated
7 Detailed Description
7.1 Overview
The LP8733xx 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 industrial
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 and Buck1
(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 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 has one dedicated general purpose digital output (GPO) signal. The CLKIN pin can be
programmed as a second GPO signal (GPO2), if the external clock is not needed. The output type (open-drain or
push-pull) is programmable for the GPOs.



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