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MA278中文資料久昌科技數(shù)據(jù)手冊PDF規(guī)格書

MA278
廠商型號(hào)

MA278

功能描述

Complementary Output Hall Effect Fan Driver

文件大小

120.36 Kbytes

頁面數(shù)量

2

生產(chǎn)廠商 Major-Power Technology Co., LTD.
企業(yè)簡稱

MPOWER久昌科技

中文名稱

久昌科技股份有限公司官網(wǎng)

原廠標(biāo)識(shí)
數(shù)據(jù)手冊

下載地址一下載地址二

更新時(shí)間

2024-12-23 12:12:00

MA278規(guī)格書詳情

GENERAL DESCRIPTION

MA278 are integrated Hall sensors with output drivers, mainly designed for electronic

commutation of brush-less DC Fan. This IC is using HV BCD process internally includes the

regulator, protecting diode, Hall plate, amplifier, comparator, and a pair of complementary

open-Drain outputs (DO, DOB).

While the magnetic flux density (B) is larger than operate point (Bop), DO will turn on

(low), and meanwhile DOB will turn off (high). Each output is latched until B is lower than

release point (Brp), and then DO, DOB transfer each state. For DC fan application,

sometimes need to test power reverse connection condition. Internal diode only protects

chip-side but not for coil-side. If necessary, add one external diode to block the reverse

current from coil-side.

? FEATURES

- On-chip Hall effect sensor with two different sensitivity and hysteresis settings

- Wide operating voltage range: 4.0V~20V

- Output sink current up to 0.4A

- -40°C to 85°C operating temperature

- Low Profile SIP-4L Packages( Green and Lead Free )

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7318
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NA/
16750
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21+
42664
12588
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2020+
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