General Description
The MAX14527/MAX14528 overvoltage protection devices feature a low 100mΩ (typ) RON internal FET and protect low-voltage systems against voltage faults up to +28V. 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 8V. With the OVLO input set below the external OVLO select voltage, the MAX14527/MAX14528 automatically 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.

*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

*Cell Phones
*Media Players
*PDAs and Palmtop Devices

MAX14528, MAX14527ETA+T, MAX14528ETA+T

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General Description
MIC2003 and MIC2013 are high-side current limiting devices, designed for power distribution applications in PCs, PDAs, printers and peripheral devices.
MIC2003 and MIC2013 are thermally protected and will shutdown should their internal temperature reach unsafe levels, protecting both the device and the load, under high current or fault conditions. Both devices are fully self-contained, with the current limit value being factory set to one of several convenient levels.
MIC2013 offers a unique new feature: Kickstart™, which allows momentary high current surges to pass unrestricted without sacrificing overall system safety.
MIC2003 and MIC2013 are excellent choices for USB and IEEE 1394 (FireWire) applications or for any system where current limiting and power control are desired.
The MIC2003 and MIC2013 are offered in space saving 6 pin SOT-23 and 2mm x 2mm MLF packages.

• 70mΩ typical on-resistance
• 2.5V - 5.5V operating range
• Pre-set current limit values of 0.5A, 0.8A and 1.2A
• Kickstart™
• Thermal Protection
• Under voltage lock-out
• Low quiescent current

• USB / IEEE 1394 Power Distribution
• Desktop and Laptop PCs
• Set top boxes
• Game consoles
• PDAs
• Printers
• Docking stations
• Chargers


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The DS2784 operates from 2.5V to 4.6V for integration in battery packs using a single lithium-ion (Li+) or Li+ polymer cell. Available capacity is reported in mAh and as a percentage. Safe operation is ensured with the included Li+ protection function and SHA-1-based
challenge-response authentication.
Precision measurements of voltage, temperature, and current, along with cell characteristics and application parameters are used to estimate capacity. The available capacity registers report a conservative estimate of the amount of charge that can be removed given the current temperature and discharge rate.
In addition to the nonvolatile (NV) storage for cell compensation and application parameters, 16 bytes of EEPROM memory is made available for the exclusive use of the host system and/or pack manufacturer. This facilitates battery lot and date tracking or NV storage of
system or battery usage statistics.
A 1-Wire® interface provides serial communication at 16kbps or 143kbps to access data registers, control registers, and user memory. Additionally, 1-Wire communication enables challenge-response pack authentication using SHA-1 as the hash algorithm in a hash-based message authentication code (HMAC) authentication protocol.

Digital Still and Video Cameras
Cordless VOIP Phones
Portable GPS Navigation
Modes and commands are capitalized for clarity.

* Precision Voltage, Temperature, and Current Measurement System
* Available Capacity Estimated from Coulomb Count, Discharge Rate, Temperature, and Cell
* Estimates Cell Aging Using Learn Cycles
* Uses Low-Cost Sense Resistor
* Allows for Calibration of Gain and Temperature Coefficient
* Li+ Safety Circuitry—Overvoltage, Undervoltage, Overcurrent, Short-Circuit Protection
* Programmable Safety Thresholds for Overvoltage and Overcurrent
* Authentication Using SHA-1 Algorithm and 64-Bit Secret
* 32-Byte Parameter EEPROM
* 16-Byte User EEPROM
* Dallas 1-Wire Interface with 64-Bit Unique ID
* Tiny, Pb-Free, 14-Pin TDFN Package Embeds Easily in Battery Packs Using Thin Prismatic


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