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Product Detailed Parameters
- Description：IC AMP COMP REF 14SOIC
- Series：-
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tube,Tube
- Type：Amplifier, Comparator, Reference
- Applications：Current Sensing, Power Management
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
- Grade：-
- Qualification：-
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Overview
The MAX4374HESD+ is a low-cost, micropower high-side current-sense supervisor featuring an integrated amplifier, comparator, and bandgap reference. It operates from a single +2.7V to +28V supply with a 50µA typical supply current. The device provides a voltage output proportional to the sense resistor drop, eliminating external gain-setting resistors. It includes a latching comparator output for overcurrent protection and a second comparator for window detection functions. The input common-mode range extends from 0V to +28V, independent of the supply voltage.
Feature Summary
- Integrated high-side current-sense amplifier with internal bandgap reference
- Latching comparator output prevents oscillation during fault conditions
- Second comparator enables window-detection functionality
- Voltage output eliminates need for external gain-setting resistors
Applications
- Notebook Computers
- Portable/Battery-Powered Systems
- Smart Battery Packs/Chargers
- Cell Phones
- Power-Management Systems
Procurement Notes
Verify the specific suffix 'SD' corresponds to the 14-pin SO package in official documentation. Confirm RoHS compliance status indicated by the '+' symbol if required. Ensure the ordering code matches the exact gain version (+100V/V) and temperature range (-40°C to +85°C). Cross-reference pinout configurations for the 14-pin SO package against system layout requirements.
Selection Notes
Select this component when both overcurrent protection and window detection are required within a single IC. The +100V/V gain is suitable for applications requiring high sensitivity to small sense voltages. Verify that the load current does not exceed the maximum differential input voltage limits across the sense resistor. Consider the 14-pin SO package size constraints relative to available PCB space.
Part Context
This part belongs to the MAX4373/MAX4374/MAX4375 family of high-side current-sense supervisors. The MAX4374 variant specifically adds a second comparator for window detection compared to the MAX4373. These devices are designed for battery-powered systems where ground path interference must be avoided. They offer a compact solution for monitoring DC current in portable electronics.
Replacement Considerations
MAX4374FEUD+ (Gain +50V/V, 14-SO)
FAQ
What is the function of the RESET pin?
The RESET pin controls the latch function of the first comparator. Holding it low disables the latch, while pulsing it low resets the latched output state.
How is the window detection threshold set?
Window detection thresholds are determined by the internal 600mV reference voltage and the value of the external sense resistor connected between RS+ and RS-.
Can the device monitor deep discharge battery packs?
Yes, the 0V to +28V input common-mode range is independent of the supply voltage, allowing current monitoring even when the battery pack is deeply discharged.
