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MAX4920B - Battery Power-Up Logic

Download the MAX4920B datasheet PDF. This datasheet also covers the MAX4919B variant, as both devices belong to the same battery power-up logic family and are provided as variant models within a single manufacturer datasheet.

General Description

The MAX4919B/MAX4920B/MAX4921B overvoltage protection controllers protect low-voltage systems against high-voltage faults up to +28V.

An internal 1.8A (min) pFET with low RON (100mΩ) switches a battery to the load and also protects the battery against short-circuit faults.

Key Features

  • o Input Overvoltage Protection Up to +28V o Preset Overvoltage Protection Trip Level 6.38V (MAX4919B) 5.80V (MAX4920B) 4.65V (MAX4921B) o Adapter/Car-Kit Auto-Selector o Low-Current Undervoltage Lockout Mode o Internal 1.8A (min) Battery Switchover FET o Integrated Low-Battery Detect o Battery Short-Circuit Protection o Low-Cost External nMOS Overvoltage FET o 14-Pin TDFN Package (3mm x 3mm) Pin Configuration TOP VIEW 14 13 12 11 10 9 8 MAX4919B MAX4920B MAX4921B +.
  • EP 1234567 GP1 IN GN1 BT.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX4919B-MaximIntegrated.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX4921B Battery Power-Up Logic
MAX4928A DisplayPort/PCIe Passive Switches
MAX4928B DisplayPort/PCIe Passive Switches
MAX4906 FHigh-/Full-Speed USB 2.0 Switches
MAX4908 Dual 3:1 Clickless Audio Multiplexers

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
MAX4919B/MAX4920B/MAX4921B 19-0614; Rev 0; 8/06 Battery Power-Up Logic with Overvoltage and Overcurrent Protection General Description The MAX4919B/MAX4920B/MAX4921B overvoltage protection controllers protect low-voltage systems against high-voltage faults up to +28V. An internal 1.8A (min) pFET with low RON (100mΩ) switches a battery to the load and also protects the battery against short-circuit faults. When a short circuit occurs, the current through the internal pFET is limited for a blanking period. If the short condition is present after the blanking period, the switch is latched off and remains off until one of the input signals (IN, HP_PWR, PWR_ON) is cycled. The pFET is turned on by a logic-high voltage at PWR_HOLD, HP_PWR, PWR_ON, or IN .