Datasheet > MAX16915

MAX16915

更新时间： 2024-09-16 14:58:07

品牌	Logo	应用领域
亚德诺 - ADI		电池开关控制器二极管
页数	文件大小	规格书
10页	740K
描述
理想二极管、电池反接及过压保护开关/限幅控制器，外置MOSFET

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MAX16915 数据手册

MAX16914/MAX16915

Ideal Diode, Reverse-Battery, and Overvoltage

Protection Switch/Limiter Controllers

with External MOSFETs

General Description

Beneﬁts and Features

● Architecture Replaces Protection Diodes Reducing

the Forward Voltage, Allowing Operation During

Cold-Crank Conditions

The MAX16914/MAX16915 low-quiescent-current over-

voltage and reverse-battery protection controllers are

designed for automotive and industrial systems that

must tolerate high-voltage transient and fault conditions.

These conditions include load dumps, voltage dips, and

reversed input voltages. The controllers monitor the input

voltage on the supply line and control two external pFETs

to isolate the load from the fault condition. The external

pFETs are turned on when the input supply exceeds 4.5V

and stay on up to the programmed overvoltage threshold.

During high-voltage fault conditions, the controllers regu-

late the output voltage to the set upper threshold voltage

(MAX16915), or switch to high resistance (MAX16914) for

the duration of the overvoltage transient to prevent dam-

age to the downstream circuitry. The overvoltage event is

indicated through an active-low, open-drain output, OV.

• Transient Voltage Protection Up to +44V and -75V

• Low-Voltage Drop when Used with Properly Sized

External pFETs

• 4.5V to 19V Input-Voltage Operation

● Ideal Diode Reverse-Battery Protection Supports

Down to -75V to Protect System During Negative-

Voltage Transients

• Back-Charge Prevention Avoids Discharging

Downstream Tank Capacitance

● Overvoltage Protection Enables System to Survive

Up to a +44V Load Dump

• Overvoltage Indicator

The reverse-battery pFET behaves as an ideal diode,

minimizing the voltage drop when forward biased. Under

reverse bias conditions, the pFET is turned off, prevent-

ing a downstream tank capacitor from being discharged

into the source.

• Thermal-Overload Protection

● Low Operating Current Meets Stringent Module

Specifications While Maintaining System Protection

• 29µA Low Operating Current

• 6µA Low Shutdown Current

Shutdown control turns off the IC completely, disconnect-

ing the input from the output and disconnecting TERM

from its external resistor-divider to reduce the quiescent

current to a minimum.

Ordering Information appears at end of data sheet.

Both devices are available in a 10-pin μMAX® pack-

age and operate over the automotive -40°C to +125°C

temperature range.

Typical Operating Circuit

BATT

OUT

Applications

Industrial

Pin Conﬁguration

GATE2

MAX16914

MAX16915

TOP VIEW

GATE1

SENSE OUT

10 GATE2

SENSE IN

GATE1

SENSE IN

SHDN

SENSE OUT

TERM

MAX16914

MAX16915

TERM

SET

OFF

SHDN

SET

GND

µMAX is a registered trademark of Maxim Integrated Products, Inc.

19-4964; Rev 3; 2/15

12 3 4 5 6 7...10

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