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MP1591

2A, 32V, 330KHz Step-Down Converter

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MP1591

MP1591

2A, 32V, 330KHz Step-Down Converter

Datasheet

Description

The MP1591 is a high voltage step-down converter ideal for automotive power adapter battery chargers. Its wide 6.5V to 32V input voltage range covers the automotive battery's requirements and it achieves 2A continuous output for quick charge capability. Current mode operation provides fast transient response and eases loop stabilization. Fault protection includes cycle-by-cycle current limiting and thermal shutdown. In shutdown mode, the converter draws only 20μA of supply current. The MP1591 requires a minimum number of readily available external components to complete a 2A step-down DC to DC converter solution.

Features & Benefits

Wide 6.5V to 32V Input Operating Range
34V Absolute Maximum Input
2A Output Current
120mΩ Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic Capacitors
Up to 95% Efficiency
20μA Shutdown Mode
Fixed 330kHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Output Adjustable From 1.23V to 21V
Under Voltage Lockout
Reference Voltage Output
Available in 8-Pin SOIC Packages

Active Part Numbers:

MP1591DN-LF-P MP1591DN-LF-Z MP1591DS-LF-P MP1591DS-LF-Z MP1591DN MP1591DN-LF MP1591DN-P MP1591DN-Z MP1591DS MP1591DS-LF MP1591DS-P MP1591DS-Z

Meaning of P & Z

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Design Resources

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Footprint (34)

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3D Models (15)

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Standard Pricing

In stock

MP1591DS-Z MP1591DS-P

Package: SOIC-8

Buy Now Price $1.94 500

Quantity Unit Price
1

$3.10
10

$2.76
100

$2.28
250

$2.17
500

$1.94

Special Pricing Available for
Larger Quantities Quote or Technical Support

In stock now: 100

Order now, up to 100 estimated to ship by 23 Jan, 2026

Lead Time For Additional Quantities

Additional quantities estimated to ship by 12 May, 2026

Arrives 3-4 business days. Shipping only $5 per order.

100 Max per Company.
Limited Inventory to support product development.

MPS Pay: Pay by Invoice Net30 Terms Learn More

Create myMPS+ account for Free Samples

MP1591DN-Z MP1591DN-P

Package: SOIC-8

Buy Now Price $1.94 500

Quantity Unit Price
1

$3.10
10

$2.76
100

$2.28
250

$2.17
500

$1.94

Special Pricing Available for
Larger Quantities Quote or Technical Support

In stock now: 100

Order now, up to 100 estimated to ship by 23 Jan, 2026

Lead Time For Additional Quantities

Additional quantities estimated to ship by 12 May, 2026

Arrives 3-4 business days. Shipping only $5 per order.

100 Max per Company.
Limited Inventory to support product development.

MPS Pay: Pay by Invoice Net30 Terms Learn More

Create myMPS+ account for Free Samples

MP1591DS-LF-Z MP1591DS-LF-P

Package: SOIC-8

2,500 per Reel

Buy Now Price $1.66 1K

Quantity Unit Price
1

$3.00
10

$2.25
100

$1.85
250

$1.75
500

$1.69
1K

$1.66

Special Pricing Available for
Larger Quantities Quote or Technical Support

In stock now: 50,000

Order now, up to 50,000 estimated to ship by 23 Jan, 2026

Lead Time For Additional Quantities

Additional quantities estimated to ship by 12 May, 2026

Arrives 3-4 business days. Shipping only $5 per order.

MPS Pay: Pay by Invoice Net30 Terms Learn More

Create myMPS+ account for Free Samples

MP1591DN-LF-Z MP1591DN-LF-P

Package: SOIC-8

2,500 per Reel

Buy Now Price $1.54 1K

Quantity Unit Price
1

$3.05
10

$2.29
100

$1.88
250

$1.75
500

$1.61
1K

$1.54

Special Pricing Available for
Larger Quantities Quote or Technical Support

In stock now: 100

Order now, up to 100 estimated to ship by 23 Jan, 2026

Lead Time For Additional Quantities

Additional quantities estimated to ship by 12 May, 2026

Arrives 3-4 business days. Shipping only $5 per order.

100 Max per Company.
Limited Inventory to support product development.

MPS Pay: Pay by Invoice Net30 Terms Learn More

Create myMPS+ account for Free Samples

Technical Forum

Questions answered by MPS engineers in 24h

Mpq6528gve-aec1-z

We are planning to use MPQ6528GVE-AEC1-Z in our project. I have some questions about the part 1)Max PWM frequency supported 2)Is there internal curren...

DC-DC POWER CONVERTERS

Latest activity 3 days ago

MPM3698-0000 EN_VCC33 pin spec

Could you tell me what the maximum allowable input voltage is for the EN_VCC33 pin? I could not find a specification dedicated to this pin in the data...

DC-DC POWER CONVERTERS

Latest activity 5 days ago

MPM3698-0000 EN PIN Waveform

The waveform on the EN pin shows a stepped shape, as shown in the attached figure. Is this behavior acceptable, or is it a problem? Do you have any su...

DC-DC POWER CONVERTERS

Latest activity 5 days ago

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Quality Policy, Certificates & Reliability Reports

All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.

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RoHS/Lead Free Policy