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Adjustable Overvoltage and Overcurrent Protectors with High Accuracy

Industry's Most Integrated OCP and OVP Solution with More Robust Reverse Current Blocking Capability

Product Details

The MAX17561/MAX17562/MAX17563 adjustable overvoltage and overcurrent-protection devices are ideal to protect systems against positive and negative input voltage faults up to ±40V and feature low 100mΩ (typ) RON FETs.

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 -40°C to +125°C temperature range.


How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 1


How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 2

Key Features

  • Industrial Power Protection Increases Robustness
    • Wide Input Supply Range: +4.5V to +36V
    • Negative Input Tolerance to -36V
    • Low RON 100mΩ (typ)
    • 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 Active-Low HVEN
  • Saves Space
    • 14-Pin, 5mm x 6.5mm, TSSOP Package

Applications/Uses

  • Battery-Powered Applications
  • Consumer Electronics
  • Industrial Equipment
  • Marine Equipment
Parametric specs for Overvoltage/Overcurrent Protectors with Internal MOSFETs
VIN (V) (min) 4.5
VIN (V) (max) 36
Current Limit (A) (min) 0.7
Current Limit (A) (max) 4.2
# Channels 1
Internal Pwr. MOSFETs NMOS+PMOS
RON (mΩ) (typ) 100
Current Limit Accuracy (%) 15
Fault Response Continuous
Reverse Current Protect. Yes
Fault Indicator Yes
Oper. Temp. (°C) -40 to +125
Package/Pins TSSOP/14
Budgetary
Price (See Notes)
$3.41 @1k
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Simplified Block Diagram

MAX17561, MAX17562, MAX17563: Functional Diagram MAX17561, MAX17562, MAX17563: Functional Diagram Zoom icon

Technical Docs

Design & Development

Click any title below to view the detail page where available.

Description

The MAX17561 evaluation kit (EV kit) is a fully assembled and tested circuit board that demonstrates the MAX17561 adjustable overvoltage and overcurrent protector in a 14-pin TSSOP surface-mount package with an exposed pad. The EV kit features TVS diode on input, schottky diode on output and jumper-configurable SETI resistors for setting different current limits. Input power to the EV kit uses a 4.5V to 36V input supply.

The EV kit can also be used to evaluate MAX17562 and MAX17563 devices by replacing the appropriate IC (U1). Request free samples from the factory when ordering the EV kit.


How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 1


How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 2

View Details

Features

  • 4.5V to 36V Operating Voltage Range
  • Features TVS Diode and Schottky Diode
  • Jumper-Configurable Current Limit
  • Proven PCB Layout
  • Fully Assembled and Tested

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Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal

Parameters

Parametric specs for Overvoltage/Overcurrent Protectors with Internal MOSFETs
VIN (V) (min) 4.5
VIN (V) (max) 36
Current Limit (A) (min) 0.7
Current Limit (A) (max) 4.2
# Channels 1
Internal Pwr. MOSFETs NMOS+PMOS
RON (mΩ) (typ) 100
Current Limit Accuracy (%) 15
Fault Response Continuous
Reverse Current Protect. Yes
Fault Indicator Yes
Oper. Temp. (°C) -40 to +125
Package/Pins TSSOP/14
Budgetary
Price (See Notes)
$3.41 @1k

Key Features

  • Industrial Power Protection Increases Robustness
    • Wide Input Supply Range: +4.5V to +36V
    • Negative Input Tolerance to -36V
    • Low RON 100mΩ (typ)
    • 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 Active-Low HVEN
  • Saves Space
    • 14-Pin, 5mm x 6.5mm, TSSOP Package

Applications/Uses

  • Battery-Powered Applications
  • Consumer Electronics
  • Industrial Equipment
  • Marine Equipment

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 ±40V and feature low 100mΩ (typ) RON FETs.

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 -40°C to +125°C temperature range.


How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 1


How to Add Overvoltage and Overcurrent Protection Using the MAX17561—Part 2

Simplified Block Diagram

MAX17561, MAX17562, MAX17563: Functional Diagram MAX17561, MAX17562, MAX17563: Functional Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal