L5985

Description：IC REG BUCK ADJ 2A 8VFQFPN
Series：-
Mfr：STMicroelectronics
Package：Tube

SKU:d418cffc0ea0 Category: Voltage Regulators - DC DC Switching Regulators Brand: STMicroelectronics

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Product introduction

L5985 is listed in the Voltage Regulators - DC DC Switching Regulators range at ChipApex. The manufacturer field lists STMicroelectronics. Its product description is IC REG BUCK ADJ 2A 8VFQFPN. Review the specifications below when checking this part for your BOM.

Voltage Regulators - DC DC Switching Regulators specifications for L5985

Description：IC REG BUCK ADJ 2A 8VFQFPN
Series：-
Mfr：STMicroelectronics
Package：Tube
Function：Step-Down
Output Configuration：Positive
Topology：Buck
Output Type：Adjustable
Number of Outputs：1
Voltage - Input (Min)：2.9V
Voltage - Input (Max)：18V
Voltage - Output (Min/Fixed)：0.6V
Voltage - Output (Max)：18V
Current - Output：2A
Frequency - Switching：250kHz ~ 1MHz
Synchronous Rectifier：No
Operating Temperature：-40°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：8-VFDFN Exposed Pad
Supplier Device Package：8-VFQFPN (3x3)
Grade：-
Qualification：-

Voltage Regulators - DC DC Switching Regulators datasheet and documents for L5985

L5985

Voltage Regulators - DC DC Switching Regulators Overview

The L5985 is a step-down switching regulator featuring an embedded Power MOSFET with a minimum current limit of 2.5 A, delivering up to 2 A DC output current. It supports an input voltage range from 2.9 V to 18 V and provides an adjustable output voltage starting from 0.6 V. The device includes an internal oscillator set at 250 kHz, which can be externally programmed up to 1 MHz. Packaged in an 8-pin VFQFPN (3 mm x 3 mm) with an exposed pad for thermal management, it operates within a junction temperature range of -40°C to 150°C.

Voltage Regulators - DC DC Switching Regulators Feature Summary

Low dropout operation enabling 100% duty cycle functionality
Internal soft-start and inhibit control mechanisms
Integrated overcurrent and thermal protection circuits
Voltage feedforward capability for improved transient response

Voltage Regulators - DC DC Switching Regulators Applications

Power supply systems for 3.3 V bus architectures
Embedded design applications requiring minimal external components
Evaluation board demonstrations for step-down switching regulators

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the specific ordering suffix to confirm package type and reel configuration. Ensure compatibility with the required thermal dissipation requirements given the exposed pad design. Confirm that the selected switching frequency setting aligns with the external resistor specifications for the target application loop stability.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when a compact solution is needed for high-current buck conversion. The wide input voltage range accommodates various source conditions. Consider the thermal resistance characteristics of the VFQFPN package for PCB layout planning. Verify that the programmable frequency range meets the electromagnetic interference constraints of the system.

Voltage Regulators - DC DC Switching Regulators Part Context

This device belongs to the family of step-down switching regulators designed for efficient power conversion. It utilizes a synchronous or non-synchronous topology depending on the specific variant, though the core L5985 integrates a single Power MOSFET. It is distinct from linear regulators by offering higher efficiency under significant load conditions.