General Description

The MAX17561/MAX17562/MAX17563 adjustable overvoltage

and overcurrent-protection devices are ideal to protect systems

against positive and negative input voltage faults up to Q40V

and feature low 100m

The adjustable overvoltage protection range is between

6V and 36V, while the adjustable undervoltage protection

range is between 4.5V and 24V. The overvoltage-lockout

(OVLO) and undervoltage-lockout (UVLO) thresholds are

set using optional external resistors. The factory-preset

internal OVLO threshold is 33V (typ) and the preset internal

UVLO threshold is 19.2V (typ).

The ICs also feature programmable current-limit protection

up to 4.2A. Once current reaches the threshold, the

MAX17561 turns off after the 20.7ms (typ) blanking time

and stays off during the retry period. The MAX17562

latches off after the blanking time, and the MAX17563

limits the current continuously. In addition, these devices

feature reverse current and thermal-shutdown protection.

The ICs are available in a small 14-pin TSSOP (5mm x

6.5mm) package and are specified over the extended

-40NC to +125NC temperature range.

Benefits and Features

● Industrial Power Protection Increases Robustness

• Wide Input Supply Range: +4.5V to +36V

• Negative Input Tolerance to -36V

• Reverse Current Flow Control Input

• Thermal Overload Protection

• Extended -40°C to +125°C Temperature Range

● Flexible Design Options Eases Designs

• Adjustable OVLO and UVLO Thresholds

• Programmable Forward-Current Limit: 0.7A to 4.2A

with ±15% Accuracy

• Dual Enable Inputs: EN and High Voltage HVEN

● Saves Space

• 14-Pin, 5mm x 6.5mm, TSSOP Package

Applications

● Industrial Equipment

● Consumer Electronics

● Marine Equipment

● Battery-Powered Applications

Ordering Information appears at end of data sheet.

19-100078; Rev 2; 9/17

IN

IN

IN

UVLO

OVLO

SETI

OUT

OUT

OUT

EN

RIEN

GND

R1

R2

R4

R3

SYSTEM

POWER

SUPPLY

NOTE: R1, R2, R3, AND R4 ARE ONLY REQUIRED FOR ADJUSTABLE

OVLO/UVLO; OTHERWISE, CONNECT UVLO/OVLO TO GND.

SYSTEM

COUT

FLAG

HVEN

MAX17561

MAX17562

MAX17563

Typical Operating Circuit

MAX17561/MAX17562/

MAX17563

Adjustable Overvoltage and Overcurrent

Protectors with High Accuracy

EVALUATION KIT AVAILABLE