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Product overview

Description

The A6985F automotive grade device is a step-down monolithic switching regulator able to deliver up to 0.5 A DC. The output voltage adjustability ranges from 0.85 V to VIN. The 100% duty cycle capability and the wide input voltage range meet the cold crank and load dump specifications for automotive systems. The “Low Consumption Mode” (LCM) is designed for applications active during car parking, 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 specification like car audio. 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
AEC-Q100 qualified

0.5 A DC output current

4 V to 38 V operating input voltage

Low consumption mode or low noise mode

30 μA I_Qat light-load (LCM V_OUT = 3.3 V)

8 μA I_Q-SHTDWN

Fixed output voltage (3.3 V and 5 V) or adjustable from 0.85 V to V_IN

Adjustable f_SW (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

R_{DSON HS} = 360 mΩ, R_{DSON LS} = 150 mΩ

Thermal shutdown
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	Part number	Status	Description	Type	Supplier
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-ISA186V1	Active	38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F5V	DC-DC Converter	ST	STEVAL-ISA186V1 Description: 38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F5V
Worldwide,Asia,Europe,Africa,North America,South America,Oceania,Afghanistan,Bahrain,Bangladesh,Bhutan,Brunei,Burma (Myanmar),Cambodia,China,East Timor,India,Indonesia,Iraq,Japan,Jordan,Kazakhstan,Kuwait,Kyrgyzstan,Laos,Malaysia,Maldives,Mongolia,Nepal,Oman,Pakistan,Philippines,Qatar,Russian Federation,Saudi Arabia,Singapore,South Korea,Sri Lanka,Taiwan,Tajikistan,Thailand,Turkmenistan,United Arab Emirates,Uzbekistan,Vietnam,Yemen,Albania,Andorra,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Israel,Italy,Latvia,Liechtenstein,Lithuania,Luxembourg,Macedonia,Malta,Moldova,Monaco,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,San Marino,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Turkey,Ukraine,United Kingdom,Vatican City,Algeria,Angola,Benin,Botswana,Burkina,Burundi,Cameroon,Cape Verde,Central African Republic,Chad,Comoros,Democratic Republic of Congo,Djibouti,Egypt,Equatorial Guinea,Eritrea,Ethiopia,Gabon,Gambia,Ghana,Guinea,Guinea-Bissau,Ivory Coast,Kenya,Lesotho,Liberia,Libya,Madagascar,Malawi,Mali,Mauritania,Mauritius,Morocco,Mozambique,Namibia,Niger,Nigeria,Rwanda,Sao Tome and Principe,Senegal,Seychelles,Sierra Leone,Somalia,South Africa,Swaziland,Tanzania,Togo,Tunisia,Uganda,Zambia,Zimbabwe,Antigua and Barbuda,Bahamas,Barbados,Belize,Canada,Costa Rica,Dominica,Dominican Republic,El Salvador,Grenada,Guatemala,Haiti,Honduras,Jamaica,Mexico,Nicaragua,Panama,Saint Kitts and Nevis,Saint Lucia,Saint Vincent and the Grenadines,Trinidad and Tobago,United States,Argentina,Bolivia,Brazil,Chile,Colombia,Ecuador,Guyana,Paraguay,Peru,Suriname,Uruguay,Venezuela,Australia,Fiji,Kiribati,Marshall Islands,Micronesia,Nauru,New Zealand,Palau,Papua New Guinea,Samoa,Solomon Islands,Tonga,Tuvalu,Vanuatu	STEVAL-ISA187V1	Active	38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F	DC-DC Converter	ST	STEVAL-ISA187V1 Description: 38 V, 0.5 A synchronous step-down switching regulator evaluation board based on A6985F

EDA Symbols, Footprints and 3D Models

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	Resource title	Version	Latest update

SPICE models (3)

	Resource title	Version	Latest update
ZIP	A6985F Pspice model		30 Sep 2016	30 Sep 2016 A6985F Pspice model
ZIP	A6985F3V3 Spice model		30 Sep 2016	30 Sep 2016 A6985F3V3 Spice model
ZIP	A6985F5V Spice model		30 Sep 2016	30 Sep 2016 A6985F5V Spice model

Quality and Reliability

Part Number	Marketing Status	Package	Grade	RoHS Compliance Grade	Material Declaration**
A6985F	Active	HTSSOP16	Automotive	Ecopack2	PDF XML
A6985F3V3	Active	HTSSOP16	Automotive	Ecopack2
A6985F3V3TR	Active	HTSSOP16	Automotive	Ecopack2
A6985F5V	Active	HTSSOP16	Automotive	Ecopack2
A6985F5VTR	Active	HTSSOP16	Automotive	Ecopack2
A6985FTR	Active	HTSSOP16	Automotive	Ecopack2	PDF XML

A6985F

Package:

HTSSOP16

Material Declaration**:

A6985F3V3

Package:

HTSSOP16

Material Declaration**:

A6985F3V3TR

Package:

HTSSOP16

Material Declaration**:

A6985F5V

Package:

HTSSOP16

Material Declaration**:

A6985F5VTR

Package:

HTSSOP16

Material Declaration**:

A6985FTR

Package:

HTSSOP16

Material Declaration**:

(**) 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.

Sample & Buy

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Part Number

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Order from ST

Marketing Status

ECCN (US)

ECCN (EU)

Packing Type

Package

Temperature (°C)

Country of Origin

Budgetary Price (US$)*/Qty

min

max

No availability of distributors reported, please contact our sales office

EAR99

NEC

Tape and Reel

HTSSOP16

-

-

PHILIPPINES

No availability of distributors reported, please contact our sales office

EAR99

NEC

Tape and Reel

HTSSOP16

-

-

PHILIPPINES

Available at 1 distributors

Distributor availability ofA6985F

Distributor Name	Region	Stock	Min. Order	Third party link
MOUSER	WORLDWIDE	1727	1	Buy from Distributor

Distributor reported inventory date: 2022-08-10

Distributor Name

MOUSER

Stock

1727

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-10

EAR99

NEC

Tube

HTSSOP16

-

-

PHILIPPINES

No availability of distributors reported, please contact our sales office

EAR99

NEC

Tape and Reel

HTSSOP16

-

-

PHILIPPINES

No availability of distributors reported, please contact our sales office

EAR99

NEC

Tube

HTSSOP16

-

-

PHILIPPINES

No availability of distributors reported, please contact our sales office

EAR99

NEC

Tube

HTSSOP16

-

-

PHILIPPINES

A6985F3V3TR Active

Package:

HTSSOP16

ECCN (US):

EAR99

Budgetary Price (US$)*/Qty:

-

No availability of distributors reported, please contact our sales office

Buy Direct at ST

Add Free Sample

A6985FTR Active

Package:

HTSSOP16

ECCN (US):

EAR99

Budgetary Price (US$)*/Qty:

-

No availability of distributors reported, please contact our sales office

Buy Direct at ST

Add Free Sample

A6985F Active

Package:

HTSSOP16

ECCN (US):

EAR99

Budgetary Price (US$)*/Qty:

-

Available at 1 distributors

Buy Direct at ST

Add Free Sample

Distributor availability ofA6985F

Distributor Name	Region	Stock	Min. Order	Third party link
MOUSER	WORLDWIDE	1727	1	Buy from Distributor

Distributor reported inventory date: 2022-08-10

Distributor Name

MOUSER

Stock

1727

Min.Order

1

Region

WORLDWIDE Buy from Distributor

Distributor reported inventory date: 2022-08-10

A6985F5VTR Active

Package:

HTSSOP16

ECCN (US):

EAR99

Budgetary Price (US$)*/Qty:

-

No availability of distributors reported, please contact our sales office

Buy Direct at ST

Add Free Sample

A6985F3V3 Active

Package:

HTSSOP16

ECCN (US):

EAR99

Budgetary Price (US$)*/Qty:

-

No availability of distributors reported, please contact our sales office

Buy Direct at ST

Add Free Sample

A6985F5V Active

Package:

HTSSOP16

ECCN (US):

EAR99

Budgetary Price (US$)*/Qty:

-

No availability of distributors reported, please contact our sales office

Buy Direct at ST

Add Free Sample

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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