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FR9855SP The Fitipower Integrated FR9855SP is a synchronous step-down DC/DC converter offering a wide input voltage range and high output current capability. It features fast constant on-time (FCOT) mode control for excellent transient response.
Mfr Part #:

FR9855SP

Available from 3 distributors
Mfr Name: Fitipower Integrated
Fitipower Integrated
The Fitipower Integrated FR9855SP is a synchronous step-down DC/DC converter offering a wide input voltage range and high output current capability. It features fast constant on-time (FCOT) mode control for excellent transient response.
✓ Total Stock: 10,899 pcs
$ Price Range: $2.21

FR9855SP Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Eito Shoji ✓
Non-Authorised Inventory information
7,922 pcs
On Request
7922 pcs On Request 1 On Request On Request On Request On Request On Request
Xingangxin ✓
Non-Authorised Inventory information
2,000 pcs
On Request
2000 pcs On Request 1 On Request On Request On Request On Request On Request
Optech Co.,Limited ✓
Non-Authorised Inventory information
977 pcs
On Request
977 pcs On Request 1 On Request On Request 24+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

FR9855SP Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Industrial Grade
Input Voltage
Medical Grade
Military Grade
Mounting Type
Output Current
Output Voltage
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Tape & Reel
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FR9855SP Description

Short technical summary and product information.

The FR9855SP from Fitipower Integrated is a high-performance synchronous step-down DC/DC converter designed for efficient power management. It operates with an input voltage range of 4.5V to 18V and can deliver a continuous load current of up to 5.5A. The converter utilizes a fast constant on-time (FCOT) control mode, which ensures rapid transient response and stability with various output capacitors, including those with very low ESR.

 

Key features include integrated power MOSFETs with low on-resistance (70mΩ/38mΩ), an output voltage range from 0.765V to 8V, and a pseudo switching frequency of 630kHz. For light load conditions, the FR9855SP can enter a power-saving mode to enhance efficiency and minimize power loss. The device incorporates comprehensive fault protection, including cycle-by-cycle current limiting, short circuit protection, undervoltage lockout (UVLO), and thermal shutdown with auto-recovery.

 

Available in SOP-8 (Exposed Pad) and TDFN-10 (3mm x 3mm) packages, the FR9855SP offers good thermal performance. Its soft-start function prevents inrush current during turn-on, contributing to system reliability. This DC/DC converter is suitable for applications such as USB hubs and routers, where stable and efficient power conversion is critical.

FR9855SP Quick Information

Product Type: Synchronous Step-Down DC/DC Converter
Canonical Name: FR9855SP Synchronous Step-Down DC/DC Converter
Subcategory: DC/DC Converter

FR9855SP Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

FR9855SP Estimated Pricing

Qty Low High
1+ $2.21 $2.21

Estimated market price range - modelled values for guidance only, not live distributor offers.

FR9855SP Features

  • Synchronous step-down DC/DC converter.
  • Wide 4.5V to 18V input voltage range.
  • 5.5A continuous output current capability.
  • Fast constant on-time (FCOT) control.
  • SOP-8 and TDFN-10 packages available.

FR9855SP Applications

  • Used in power management circuits
  • Suitable for consumer electronics
  • Ideal for industrial power supplies
  • Applicable in communication devices

FR9855SP FAQs

5 frequently asked questions generated from this part’s specifications.
What is the input voltage range for the FR9855SP?

The input voltage range is 4.5V to 18V.

What is the maximum output current of the FR9855SP?

The FR9855SP can deliver a continuous output current of 5.5A.

What type of control mode does the FR9855SP use?

The FR9855SP uses a fast constant on-time (FCOT) mode control.

What packages are available for the FR9855SP?

The FR9855SP is available in SOP-8 (Exposed Pad) and TDFN-10 (3mm x 3mm) packages.

What is the typical on-resistance of the integrated power MOSFETs?

The integrated power MOSFETs have a typical on-resistance of 70mΩ and 38mΩ.

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