Mfr Part #:

MAX4840EXT+T

Mfr Name: Analog Devices / Maxim Integrated

The MAX4840EXT+T is an overvoltage protection controller IC from Analog Devices, designed to safeguard low-voltage systems. It offers protection up to +28V with a 5.8V trip level and 3.25V undervoltage lockout.

✓ Total Stock: 60,000 pcs

$ Price Range: $0.75

MAX4840EXT+T Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Components Technology Group, Inc. ✓ Non-Authorised Inventory information	60,000 pcs On Request	60000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

MAX4840EXT+T Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	Specialized ICs
Manufacturer Name	Analog Devices / Maxim Integrated
Applications	Cell Phones, Digital Cameras, Media Players
Mounting Type	Surface Mount
Operating Temperature	-40°C to +85°C
Supplier Device Package	SC-70-6
Type	Overvoltage Protection Controller

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MAX4840EXT+T Description

Short technical summary and product information.

The MAX4840EXT+T is an overvoltage protection controller IC from Analog Devices, designed to protect low-voltage systems from input voltages up to +28V. When the input voltage exceeds the preset trip level of 5.8V, the IC turns off an external n-channel FET to prevent damage to sensitive components.

This device features an undervoltage lockout (UVLO) threshold of 3.25V, ensuring proper operation within the specified voltage range. An internal charge pump simplifies the design by eliminating the need for external capacitors. The MAX4840EXT+T includes a voltage fault FLAG output that asserts immediately during an overvoltage event, and a shutdown pin (EN) for power control.

With ±15kV ESD protection on the input (when bypassed with a 1µF capacitor), this IC is suitable for demanding applications. It is supplied in a compact 6-pin SC70 package, making it ideal for space-constrained designs. The device operates across an extended temperature range of -40°C to +85°C.

Applications for the MAX4840EXT+T include mobile phones, digital still cameras, PDAs, and MP3 players, where robust power protection is critical.

MAX4840EXT+T Quick Information

Product Type: Overvoltage Protection Controller

Canonical Name: MAX4840A Overvoltage-Protection Controller

Subcategory: Overvoltage Protection

MAX4840EXT+T Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

Lead Free: Lead Free

MAX4840EXT+T Estimated Pricing

Qty	Low	High
1+	$0.75	$0.75

Estimated market price range - modelled values for guidance only, not live distributor offers.

MAX4840EXT+T Features

Overvoltage protection up to +28V.
Preset 5.8V overvoltage trip level.
3.25V undervoltage lockout threshold.
Internal charge pump for simple design.
Compact 6-pin SC-70 package.

MAX4840EXT+T Applications

Protects low-voltage systems.
Ideal for mobile devices.
Suitable for digital cameras.
Used in portable media players.

MAX4840EXT+T FAQs

7 frequently asked questions generated from this part’s specifications.

What is the overvoltage protection rating of the MAX4840EXT+T?

The device provides overvoltage protection up to +28V.

What is the overvoltage trip level?

The nominal overvoltage trip level is 5.8V.

What is the undervoltage lockout threshold?

The undervoltage lockout (UVLO) threshold is 3.25V nominal.

What is the startup delay of the MAX4840EXT+T?

The device has an internal 50ms startup delay.

What ESD protection is provided on the input?

The input is protected up to ±15kV (HBM) with a 1µF bypass capacitor.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

What package is the MAX4840EXT+T available in?

The device is available in SC70-6, also listed as 6-TSSOP, SC-88, or SOT-363.