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High-Accuracy, Surge-Protected Overvoltage Protectors

Fast Response, Tighter Accuracy, Low RON and Integrated Surge Protection in a WLP Package

产品详情

主要特征

应用/用途

Parametric specs for Overvoltage Protection Controllers
# Channels 1
VIN (V) (min) 2.5
VIN (V) (max) 28
Over Voltage Trip Level (V) 13.75
Over Volt. Flag Open-Drain
tGATE (On) (ms) 2
tGATE (Off) (µs) 2
Package/Pins WLP/12
Budgetary
Price (See Notes)
1.39
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参量

Parametric specs for Overvoltage Protection Controllers
# Channels 1
VIN (V) (min) 2.5
VIN (V) (max) 28
Over Voltage Trip Level (V) 13.75
Over Volt. Flag Open-Drain
tGATE (On) (ms) 2
tGATE (Off) (µs) 2
Package/Pins WLP/12
Budgetary
Price (See Notes)
1.39

主要特征

  • Protects High-Power Portable Devices
    • Wide Operating Input Voltage Protection from +2.1V to +28V
    • 4.5A Continuous Current Capability
    • Integrated 38mΩ (typ) n-Channel MOSFET Switch
    • Fast 100ns (typ) Response Time
  • Flexible Design
    • Adjustable Overvoltage-Protection Trip Level
    • Wide Adjustable OVLO Threshold Range from +4V to +20V
    • Preset Internal Accurate OVLO Threshold: 13.75V
    • Microphone Mode for Microphone Signals on IN
  • Additional Protection Features Increase System Reliability
    • Surge Immunity to +100V
    • Soft-Start to Minimize In-Rush Current
    • Internal 21ms Startup Debounce
    • Thermal-Shutdown Protection
  • Minimize PCB Area
    • 12-Bump WLP (1.3mm x 2mm) Package
  • -40°C to +85°C Operating Temperature Range

应用/用途

  • 便携式媒体播放器
  • 智能电话
  • 平板PC

描述

The MAX14699 overvoltage protection (OVP) device features a low 38mΩ (typ) on-resistance (RON) internal FET and protects low-voltage systems against voltage faults up to +28VDC. An internal clamp also protects the device from surges up to +100V. The MAX14699 features a 100ns (typ) overvoltage response time to minimize voltage rise on OUT during an overvoltage event. When the input voltage exceeds the overvoltage threshold, the internal FET is quickly turned off to prevent damage to the protected downstream 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 external OVLO select voltage, the MAX14699 automatically selects the accurate internal trip threshold. The internal over voltage threshold (OVLO) is preset to 13.75V (typ). The device features an open-drain active-low ACOK output, indicating a stable supply between minimum supply voltage and VOVLO. The MAX14699 is protected against overcurrent events by an internal thermal shutdown.

The MAX14699 is offered in a small, 12-bump WLP package and operates over the -40°C to +85°C extended temperature range.

简化框图

MAX14699: Functional Diagram MAX14699: Functional Diagram Zoom icon

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