L6985F

Active
Education

38 V 500 mA synchronous step-down switching regulator with 30 uA quiescent current

Download datasheet Order Direct
Overview
Sample & Buy
Solutions
Documentation
CAD Resources
Tools & Software
Quality & Reliability
eDesignSuite
Get Started
Partner products
Sales Briefcase
  • The L6985F is a step-down monolithic switching regulator able to deliver up to 0.5 A DC. The output voltage adjustability ranges from 0.85V to VIN. Thanks to the P-channel MOSFET high-side power element, the device features 100% of the 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 the idle mode, so it maximizes the efficiency at the light-load with the controlled output voltage ripple. The “Low Noise Mode” (LNM) makes the switching frequency constant overload current range, meeting the low noise application specification. 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 the 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 effective constant current protection.

    Key Features

    • 0.5 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 μAIQ-SHTDWN
    • Output voltage adjustable from 0.85 V to VIN
    • Adjustable fSW (250 kHz - 2 MHz)
    • Embedded output voltage supervisor
    • Synchronization
    • Adjustable soft-start time
    • Internal current limiting
    • Overvoltage protection
    • Output voltage sequencing
    • Peak current mode architecture
    • RDSON HS = 360 mΩ, RDSON LS = 150 mΩ
    • Thermal shutdown

Recommended for you

Related Applications

Energy generation and distribution

Factory Automation

Home, Building and City Automation

Lighting and Controls

Power Supplies and Converters

CAD/EDA Symbols, Footprints and Models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6985F
Active
HTSSOP16 Automotive Ecopack2
L6985FTR
Active
HTSSOP16 Automotive Ecopack2

L6985F

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L6985FTR

Package:

HTSSOP16

Material Declaration**:

Marketing Status

Active

Package

HTSSOP16

Grade

Automotive

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.

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output

V This option is required and must be a number.
A This option is required and must be a number.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L6985FTR No availability of distributors reported, please contact our sales office
Active
EAR99 NEC Tape And Reel HTSSOP16 - - PHILIPPINES 1.1 / 1k
L6985F No availability of distributors reported, please contact our sales office Buy Direct
Active
EAR99 NEC Tube HTSSOP16 - - PHILIPPINES 1.1 / 1k

L6985FTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.1 / 1k

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.1 / 1k

Country of Origin

PHILIPPINES

L6985F

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.1 / 1k

ECCN (EU)

NEC

Packing Type

Tube

Package

HTSSOP16

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.1 / 1k

Country of Origin

PHILIPPINES

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