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PDF MAX14590 Data sheet ( Hoja de datos )
| Número de pieza | MAX14590 | |
| Descripción | (MAX14586 / MAX14590) High-Current Overvoltage Protectors | |
| Fabricantes | Maxim Integrated | |
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Hay una vista previa y un enlace de descarga de MAX14590 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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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 (RON) 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
IN
MAX14586
MAX14590
OVLO
OUT
OUT
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
����������������������������������������������������������������� Maxim Integrated Products 1
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.
Free Datasheet http://www.datasheet4u.com/
1 page  
MAX14586/MAX14590
High-Current Overvoltage Protectors
with Adjustable OVLO
Typical Operating Characteristics (continued)
(VIN = +5.0V, CIN = 1FF, COUT = 1FF, TA = +25NC, unless otherwise noted.)
POWER-UP RESPONSE
(IOUT = 0.5A, COUT = 100µF)
MAX14586 toc07
POWER-UP RESPONSE
(IOUT = 0.5A, COUT = 1000µF)
MAX14586 toc08
VIN VIN
0V
5V/div
0V
5V/div
VOUT
VOUT
0V
5V/div
0V
5V/div
IOUT IOUT
0mA
500mA/div
0mA
500mA/div
10ms/div
10ms/div
OVERVOLTAGE FAULT RESPONSE
(IOUT = 0.5A, COUT = 100µF)
MAX14586 toc09
VIN
0V 5V/div
0V VOUT
5V/div
0mA IOUT
500mA/div
10µs/div
����������������������������������������������������������������� Maxim Integrated Products 5
Free Datasheet http://www.datasheet4u.com/
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet MAX14590.PDF ] | |
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