Mfr Part #:

L387AH

Mfr Name: ST

The L387AH is a 5V regulator from STMicroelectronics, designed for consumer and industrial applications. It offers a low dropout voltage and a reset function suitable for microprocessor systems.

✓ Total Stock: 764 pcs

$ Price Range: $0.99

L387AH Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Fe Components ✓ Non-Authorised Inventory information	764 pcs On Request	764 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

L387AH Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	ST
Output Current	>500mA
Output Voltage	5V ± 4%

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L387AH Description

Short technical summary and product information.

The STMicroelectronics L387AH is a 5V linear voltage regulator featuring a very low dropout voltage and a reset output. This makes it particularly useful for battery-powered equipment where power consumption needs to be minimized, thereby prolonging battery life.

The regulator is designed to provide stabilized 5V supplies in consumer and industrial applications. A key feature is its reset output, which provides a signal for microprocessor systems. This output generates a reset signal when power is applied (after a programmable delay) and goes low when power is removed, effectively inhibiting the microprocessor. An hysteresis on the reset delay capacitor enhances immunity to ground noise.

Key electrical specifications include a precise output voltage of 5V with a ±4% tolerance and an output current capability exceeding 500mA. The device has a DC input voltage rating of up to 35V and operates within a junction and storage temperature range of -55 to 150°C. The L387AH comes in a DIP package, suitable for various mounting needs.

Its high noise immunity and reset function make the L387AH a suitable choice for applications requiring stable power and reliable system reset capabilities.

L387AH Quick Information

Product Type: Voltage Regulator

Canonical Name: ST L387AH 5V Regulator

Subcategory: Voltage Regulators

L387AH Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

L387AH Estimated Pricing

Qty	Low	High
1+	$0.99	$0.99

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

L387AH Features

Very low dropout 5V regulator.
Output current exceeds 500mA.
Includes power-on/off reset function.
High noise immunity on reset capacitor.
Packaged in a DIP configuration.

L387AH Applications

Ideal for battery-powered equipment.
Suitable for microprocessor systems.
Used in consumer electronics.
Applicable in industrial systems.

L387AH FAQs

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

What is the output voltage of the L387AH?

The L387AH provides a precise output voltage of 5V with a ±4% tolerance.

What is the maximum input voltage for the L387AH?

The maximum DC input voltage for the L387AH is 35V.

What is the output current capability of the L387AH?

The L387AH can supply an output current in excess of 500mA.

What is the operating temperature range for the L387AH?

The junction and storage temperature range for the L387AH is -55 to 150°C.

What package type is the L387AH available in?

The L387AH is available in a DIP package.

Does the L387AH have a reset function?

Yes, the L387AH includes a reset output function suitable for microprocessor systems.