MAX14727
Dual-Input, Bidirectional Overvoltage Protector with Automatic Path Control
One OVP to Protect Dual-Input-Powered Portable Devices
Top
Overview
Features and Benefits
- Protects Portable Devices with Dual-Input Power
- Wide Operating Input-Voltage Protection from 3V to 28V
- 5A Continuous-Current Capability
- Integrated 73mΩ (typ) nMOSFET Switch
- Allows Flexible and Precise Design in OVLO Implementation
- Wide Adjustable OVLO Threshold Range from 4V to 14V
- OTG Enables Allow OUT Supply INA/INB
- Preset Accurate Internal OVLO Thresholds:
- 13.75V ±2% (MAX14727)
- 10V ±2% (MAX14728)
- 5.92V ±2% (MAX14731)
- Increases System Reliability Through Premium Security
- Surge Immunity Over +100V
- Soft-Start to Minimize In-Rush Current
- Internal 15ms Startup Debounce
- Thermal Shutdown Protection
- Minimizes Board Space With Compact Package
- 30-Bump, 2.6mm x 2.2mm WLP
Product Details
The MAX14727/MAX14728/MAX14731 provide protection to valuable consumer circuits against two positive voltage faults up to +28VDC. An internal clamp also protects the devices from surges up to 100V. The devices automatically select the input source, with channel A being the primary supply.
These devices feature reverse bias-blocking capabilities. Unlike other overvoltage protectors, when the devices are disabled, the voltage applied to OUT does not feed back into either INA or INB. These devices also feature two OTG enable pins (OTG_ENA, OTG_ENB) that allow OUT voltage to supply the corresponding input when OUT is higher than the output startup voltage.
These overvoltage-protection devices feature high-voltage, low on-resistance (73mΩ, typ) internal FETs, effectively minimizing a voltage drop across the device. When the input voltage exceeds the overvoltage threshold, the internal FET is turned off to prevent damage to the protected components. The devices also have thermal-shutdown protection against overload conditions.
The overvoltage-protection threshold can be adjusted with optional external resistors to any voltage between 4V and 14V. The devices automatically choose the appropriate internal trip thresholds when the overvoltage-lockout input is set lower than the external OVLO select voltage. The internal OVLO are preset to 13.75V (typ) (MAX14727), 10V (typ) (MAX14728), or 5.92V (typ) (MAX14731).
The devices are specified over the extended -40°C to +85°C temperature range, and are available in a 30-bump, wafer-level package (WLP).
Applications
- e-Readers
- Smartphones
- Tablets
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation & Resources
-
How to Choose a Power Path Selector3/26/2019
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| MAX14727EWV+ | Material Declaration | Reliability Data | 30-WLCSP-N/A | |
| MAX14727EWV+T | Material Declaration | Reliability Data | 30-WLCSP-N/A | |
| Wafer Fabrication Data |
Support & Discussions
Sample & Buy
Ordering FAQs
See our Ordering FAQs for answers to questions about online orders, payment options and more.
Buy Now Pricing
(**) Displayed Buy Now Price and Price Range is based on small quantity orders.
List Pricing
(*)The 1Ku list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
Selecting the Sample button above will redirect to the third-party ADI Sample Site. The part selected will carry over to your cart on this site once logged in. Please create a new account there if you have never used the site before. Contact SampleSupport@analog.com with any questions regarding this Sample Site.