EVALUATION KIT AVAILABLE
MAX17561/MAX17562/
MAX17563
Adjustable Overvoltage and Overcurrent
Protectors with High Accuracy
Benefits and Features
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
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Industrial Power Protection Increases Robustness
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Wide Input Supply Range: +4.5V to +36V
Negative Input Tolerance to -36V
Low R
100mΩ (typ)
and feature low 100mΩ (typ) R FETs.
ON
ON
Reverse Current Flow Control Input
Thermal Overload Protection
Extended -40°C to +125°C Temperature Range
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).
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Flexible Design Options Eases Designs
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Adjustable OVLO and UVLO Thresholds
Programmable Forward-Current Limit: 0.7A to 4.2A
with 15ꢀ Accuracy
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Dual Enable Inputs: EN and High Voltage HVEN
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.
Saves Space
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14-Pin, 5mm x 6.5mm, TSSOP Package
Applications
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Industrial Equipment
Consumer Electronics
Marine Equipment
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.
Battery-Powered Applications
Ordering Information appears at end of data sheet.
Typical Operating Circuit
V
IN
IN
IN
OUT
POWER
C
IN
C
OUT
OUT
OUT
V
PULLUP
SYSTEM
MAX17561
MAX17562
MAX17563
R3
R1
SYSTEM
POWER
SUPPLY
UVLO
OVLO
SETI
FLAG
EN
RIEN
HVEN
R4
R2
GND
NOTE: R1, R2, R3, AND R4 ARE ONLY REQUIRED FOR ADJUSTABLE
OVLO/UVLO; OTHERWISE, CONNECT UVLO/OVLO TO GND.
19-100078; Rev 2; 9/17