Rainbow-electronics MAX14528 Manual do Utilizador
Consulte online ou descarregue Manual do Utilizador para Sensores Rainbow-electronics MAX14528. Rainbow Electronics MAX14528 User Manual Manual do Utilizador
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General Description
The MAX14527/MAX14528 overvoltage protection
devices feature a low 100mΩ (typ) R
ON
internal FET
and protect low-voltage systems against voltage faults
up to +28V. When the input voltage exceeds the over-
voltage threshold, the internal FET is turned off to pre-
vent damage to the protected components.
The overvoltage protection threshold can be adjusted
with optional external resistors to any voltage between
4V and 8V. With the OVLO input set below the external
OVLO select voltage, the MAX14527/MAX14528 auto-
matically choose the internal ±2.5% accurate trip
thresholds. The internal overvoltage thresholds (OVLO)
are preset to 5.75V typical (MAX14527) or 6.76V typical
(MAX14528). The MAX14527/MAX14528 are also
protected against overcurrent events with an internal
thermal shutdown.
The MAX14527/MAX14528 are offered in a small, 8-pin
TDFN-EP package and operate over the -40°C to
+85°C extended temperature range.
Applications
Cell Phones
Media Players
PDAs and Palmtop Devices
Features
♦ Input Voltage Protection Up to +28V
♦ Preset Internal ±2.5% Accurate OVLO Thresholds
5.75V (MAX14527)
6.76V (MAX14528)
♦ Adjustable Overvoltage Protection Trip Level
♦ Integrated 100mΩ (typ) n-Channel MOSFET
Switch
♦ Soft-Start to Minimize In-Rush Current
♦ Automatic Overvoltage Protection Trip-Level
Selection
♦ Internal 15ms Startup Delay
♦ Thermal Shutdown Protection
♦ 8-Pin TDFN (2mm x 2mm) Package
♦ -40°C to +85°C Operating Temperature Range
MAX14527/MAX14528
Adjustable Overvoltage Protector
with High Accuracy
________________________________________________________________
Maxim Integrated Products
1
19-4357; Rev 0; 10/08
Ordering Information
PART
PIN-PACKAGE
TOP
MARK
OVLO
(V)
MAX14527ETA+T
8 TDFN-EP* ACR 5.75
MAX14528ETA+T
8 TDFN-EP* ACS 6.76
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.
Note: Devices are specified over the -40°C to +85°C tempera-
ture range.
+
Denotes a lead-free/RoHS-compliant package.
T = Tape and reel.
*
EP = Exposed pad.
OUT
OUT
MAX14527
MAX14528
CHARGER
INPUT
GND
*
1µF
IN
IN
OVLO
USB
CONNECTOR
R1
R2
VBUS
*R1 AND R2 ARE REQUIRED ONLY FOR ADJUSTABLE OVLO; OTHERWISE, CONNECT OVLO TO GND.
PMIC
Typical Application Circuit
Pin Configuration appears at end of data sheet.
Resumo do Conteúdo
Página 1 - MAX14527/MAX14528
General DescriptionThe MAX14527/MAX14528 overvoltage protectiondevices feature a low 100mΩ (typ) RONinternal FETand protect low-voltage systems agains
Página 2
MAX14527/MAX14528Adjustable Overvoltage Protectorwith High Accuracy2 _________________________________________________________________________________
Página 3
MAX14527/MAX14528Adjustable Overvoltage Protectorwith High Accuracy___________________________________________________________________________________
Página 4
MAX14527/MAX14528Adjustable Overvoltage Protectorwith High Accuracy4 _________________________________________________________________________________
Página 5
Detailed DescriptionThe MAX14527/MAX14528 overvoltage protectiondevices feature a low RONinternal FET and protect low-voltage systems against voltage
Página 6
MAX14527/MAX14528Internal SwitchThe MAX14527/MAX14528 incorporate an internal FETwith a 100mΩ (typ) RON. The FET is internally driven bya charge pump
Página 7
MAX14527/MAX14528Adjustable Overvoltage Protectorwith High AccuracyMaxim cannot assume responsibility for use of any circuitry other than circuitry en
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