36V-Capable Overvoltage Protector - Maxim Integrated Products
Description
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19-5570; Rev 1; 8/11
36V-Capable Overvoltage Protector with Regulated Output Voltage
General Description
The MAX14562 protects valuable consumer circuits against voltage faults of up to +36V.
This robust protection is implemented in a three-step scheme for a superior result.
If the input is below the preset regulated outputvoltage (VPROV) threshold, the output tracks the input minus the voltage drop (RON x ILOAD) across the pass FET.
If the input exceeds VPROV, the output is regulated to VPROV.
If the input rises further and exceeds the overvoltage lockout cutoff threshold (VOVLO), the output is disconnected from the input.
A low resistance 160mI (typ) FET is integrated in the MAX14562, effectively reducing the component count and application footprint.
The MAX14562 also features thermal shutdown protection against a short-circuit event.
The MAX14562 is specified over the extended -40NC to +85NC temperature range and is available in 8-pin TDFN (2mm x 2mm) package.
S Input Voltage Protection Up to +36V S Preset Regulated Output Voltage (+5.
15V typ) S Integrated 160mI (typ) N-Channel MOSFET
Features
MAX14562
Switch
S Soft-Start to Minimize In-Rush Current S Overvoltage Cutoff Protection +8V (typ) S Thermal Shutdown Protection S -40NC to +85NC Operating Temperature Range
Ordering Information
PART MAX14562ETA+T TEMP RANGE -40NC to +85NC PINPACKAGE 8 TDFN-EP* TOP MARK ADI
Applications
Mobile Phones Smartphones Portable Media Player PDAs Digital Cameras Bluetooth Headset E-Book Mobile Internet Device
+Denotes a lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
*EP = Exposed pad.
Typical Operating Circuit
CHARGER INPUT CHARGER OUTPUT SYSTEM LOAD
VBUS TRAVEL ADAPTER INPUT GND
IN 1µF * IN MAX14562
OUT OUT *
VIO
1µF
VBUS
PMIC
10kΩ ACOK GND
*ONLY TDFN.
APIC WITH HS USB
EN
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