MAX16914

更新时间： 2024-11-05 11:18:23

品牌	Logo	应用领域
美信 - MAXIM		电池二极管开关控制器
页数	文件大小	规格书
9页	1070K
描述
Ideal Diode, Reverse-Battery, and Overvoltage Protection Switch/Limiter Controllers with External MOSFETs

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MAX16914 数据手册

19-4964; Rev 0; 9/09

Ideal Diode, Reverse-Battery, and Overvoltage Protection

Switch/Limiter Controllers with External MOSFETs

General Description

Features

S 4.5V to 19V Input Voltage Operation

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 con-

trollers regulate the output voltage to the set upper

threshold voltage (MAX16915), or switch to high resis-

tance (MAX16914) for the duration of the overvoltage

transient to prevent damage to the downstream circuitry.

The overvoltage event is indicated through an active-low,

open-drain output, OV.

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

S Adjustable Overvoltage Limit with Resistor-

Divider Shut Off in Shutdown

S Ideal Diode Reverse-Battery Protection

S Low Voltage Drop When Used with Properly Sized

External pFETs

S Back-Charge Prevention

S Overvoltage Indicator

S Shutdown Input

S 29µA Low Operating Current

S 6µA Low Shutdown Current

S Thermal-Overload Protection

S -40NC to +125NC Operating Temperature Range

S Small 10-Pin µMAX Package

S AEC-Q100 Qualified

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.

Ordering Information

PART

TEMP RANGE

-40NC to +125NC

PIN-PACKAGE

10 FMAX

Shutdown control turns off the IC completely, discon-

necting the input from the output and disconnecting

TERM from its external resistor-divider to reduce the

quiescent current to a minimum.

MAX16914AUB/V+

MAX16915AUB/V+

10 FMAX

+Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified device.

Both devices are available in a 10-pin FMAX package

and operate over the automotive -40NC to +125NC tem-

perature range.

Typical Operating Circuit

Applications

BATT

OUT

Automotive

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.

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...9

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