L6986H

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38 V, 2 A synchronous step-down switching regulator with 30 µA quiescent current

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Product overview

Description

The L6986H is a step-down monolithic switching regulator able to deliver up to 2 A DC. The output voltage adjustability ranges from 0.85 V to VIN. Thanks to the P-channel MOSFET high-side power element, the device features 100% duty cycle operation. The wide input voltage range meets the specification for the 5 V, 12 V and 24 V power supplies.

The “low consumption mode” (LCM) is designed for applications active during idle mode, so it maximizes the efficiency at light-load with controlled output voltage ripple. The “low noise mode” (LNM) makes the switching frequency constant and minimizes the output voltage ripple overload current range, meeting the low noise application specifications. The output voltage supervisor manages the reset phase for any digital load (µC, FPGA). The RST open collector output can also implement output voltage sequencing during the power-up phase. The synchronous rectification, designed for high efficiency at medium - heavy load, and the high switching frequency capability make the size of the application compact. Pulse by pulse current sensing on both power elements implements an effective constant current protection.

  • All features

    • 2 A DC output current
    • 4 V to 38 V operating input voltage
    • Low consumption mode or low noise mode
    • 30 µA IQ at light-load (LCM VOUT = 3.3 V)
    • 8 µA IQ-SHTDWN
    • Adjustable fSW (250 kHz - 2 MHz)
    • Fixed output voltage (3.3 V and 5 V) or adjustable from 0.85 V to VIN
    • Embedded output voltage supervisor
    • Synchronization
    • Adjustable soft-start time
    • Internal current limiting
    • Overvoltage protection
    • Output voltage sequencing
    • Peak current mode architecture
    • RDS(on) HS = 180 mΩ, RDS(on) LS = 150 mΩ
    • Thermal shutdown

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STMicroelectronics - L6986H

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6986H
Active
HTSSOP16 Industrial Ecopack2
L6986H3V3
NRND
HTSSOP16 Industrial Ecopack2
L6986H3V3TR
NRND
HTSSOP16 Industrial Ecopack2
L6986H5V
Active
HTSSOP16 Industrial Ecopack2
L6986H5VTR
Active
HTSSOP16 Industrial Ecopack2
L6986HTR
Active
HTSSOP16 Industrial Ecopack2

L6986H

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6986H3V3

Package:

HTSSOP16

Material Declaration**:

Marketing Status

NRND

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6986H3V3TR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

NRND

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6986H5V

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6986H5VTR

Package:

HTSSOP16

Material Declaration**:

PDF XML

Marketing Status

Active

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

L6986HTR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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L6986H3V3
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L6986H3V3TR NRND

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L6986H

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L6986H5V Active

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L6986H5V

L6986H3V3 NRND

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(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors