Datasheet > MAX14728

MAX14728

更新时间： 2024-10-04 14:57:27

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
16页	1106K
描述
双路输入、双向过压保护器，带自动通路控制

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中文翻译

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MAX14728 数据手册

MAX14727/MAX14728/

MAX14731

Dual-Input, Bidirectional Overvoltage

Protector with Automatic Path Control

General Description

Beneﬁts and Features

● Protects Portable Devices with Dual-Input Power

• Wide Operating Input-Voltage Protection from 3V

to 28V

The

MAX14727/MAX14728/MAX14731

provide

protection to valuable consumer circuits against two

positive voltage faults up to +28V .An internal clamp also

• 5A Continuous-Current Capability

• Integrated 73mΩ (typ) nMOSFET Switch

protects the devices from surges up to 100V. The

devices automatically select the input source, with

channel A being the primary supply.

● Allows Flexible and Precise Design in OVLO

Implementation

These devices feature reverse bias-blocking capabilities.

Unlike other overvoltage protectors, when the devices

are disabled, the voltage applied to OUT does not feed

back into either INA or INB. These devices also feature

two OTG enable pins (OTG_ENA, OTG_ENB) that allow

OUT voltage to supply the corresponding input when OUT

is higher than the output startup voltage.

• Wide Adjustable OVLO Threshold Range from 4V

to 14V

• OTG Enables Allow OUT Supply INA/INB

• Preset Accurate Internal OVLO Thresholds:

13.75V ±2% (MAX14727)

10V ±2% (MAX14728)

5.92V ±2% (MAX14731)

These overvoltage-protection devices feature high-voltage,

low on-resistance (73mΩ, typ) internal FETs, effectively

minimizing a voltage drop across the device. When

the input voltage exceeds the overvoltage threshold,

the internal FET is turned off to prevent damage to the

protected components. The devices also have thermal-

shutdown protection against overload conditions.

● Increases System Reliability Through Premium

Security

• Surge Immunity Over +100V

• Soft-Start to Minimize In-Rush Current

• Internal 15ms Startup Debounce

• Thermal Shutdown Protection

● Minimizes Board Space With Compact Package

The overvoltage-protection threshold can be adjusted with

optional external resistors to any voltage between 4V and

14V. The devices automatically choose the appropriate

internal trip thresholds when the overvoltage-lockout input

is set lower than the external OVLO select voltage. The

internal OVLO are preset to 13.75V (typ) (MAX14727),

10V (typ) (MAX14728), or 5.92V (typ) (MAX14731).

• 30-Bump, 2.6mm x 2.2mm WLP

Ordering Information appears at end of data sheet.

The devices are specified over the extended -40°C

to +85°C temperature range, and are available in a

30-bump, wafer-level package (WLP).

Applications

● Smartphones

● Tablets

● e-Readers

19-7577; Rev 1; 6/15

12 3 4 5 6 7...16

中文翻译

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