MAX14586 Datasheet, PDF (1/9 Pages) Maxim Integrated Products – High-Current Overvoltage Protectors with Adjustable OVLO

19-5818; Rev 0; 3/11
MAX14586/MAX14590
High-Current Overvoltage Protectors
with Adjustable OVLO
General Description
The MAX14586/MAX14590 overvoltage protection devic-
es feature a low 48mI (typ) on-resistance (R_ON) internal
FET and protect low-voltage systems against voltage
faults up to +36V. When the input voltage exceeds the
overvoltage threshold, the internal FET is turned off to
prevent damage to the protected components.
The overvoltage protection threshold can be adjusted
with optional external resistors to any voltage between
4V and 20V. With the OVLO input set below the exter-
nal OVLO select voltage, the devices automatically
choose the internal accurate trip thresholds. The internal
overvoltage thresholds (OVLO) are preset to 7V typical
(MAX14586) or 15V typical (MAX14590). The devices are
also protected against overcurrent events by an internal
thermal shutdown.
The MAX14586/MAX14590 are offered in a small, 8-pin
TDFN package with exposed pad and operate over the
-40NC to +85NC extended temperature range.
Applications
Smartphones
Tablet PCs
Mobile Internet Devices
Benefits and Features
S Protect High-Power Portable Devices
 Wide Operating Input Voltage Protection
from +2.2V to +36V
 3A Continuous Current Capability
 Integrated 40mI (typ) n-Channel MOSFET
Switch
S Flexible Overvoltage Protection Design
 Adjustable Overvoltage Protection Trip Level
 Wide Adjustable OVLO Threshold Range
from +4V to +20V
 Preset Internal Accurate OVLO
Thresholds:
7V ±2.9% (MAX14586)
15V ±3.3% (MAX14590)
S Additional Protection Features Increase System
Reliability
 Soft-Start to Minimize In-Rush Current
 Internal 15ms Startup Debounce
 Thermal-Shutdown Protection
S Minimize PCB Area
 8-Pin TDFN (2mm x 2mm) Package
Ordering Information appears at end of data sheet.
Typical Application Circuit
POWER
ADAPTER
1µF
R1*
R2*
IN
OUT
IN
OUT
MAX14586
MAX14590
OVLO
GND
*R1 AND R2 ARE ONLY REQUIRED FOR ADJUSTABLE OVLO; OTHERWISE, CONNECT OVLO TO GND.
CHARGER
PMIC
Li-ION
BATTERY
For related parts and recommended products to use with this part, refer to: www.maxim-ic.com/MAX14586.related
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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.