FAN53555BUC79X DC-DC Power Conversion by ON Semiconductor

5 A, 2.4 MHz, Digitally Programmable TinyBuck™ Regulator

Semiconductors - ICs
> More Semiconductors - ICs
Status: Active
Series: FAN53555
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The FAN53555 is a step-down switching voltage regulator that delivers a digitally programmable output from an input voltage supply of 2.5 V to 5.5 V. The output voltage is programmed through an I2C interface capable of operating up to 3.4 MHz. Using a proprietary architecture with synchronous rectification, the FAN53555 is capable of delivering 5 A continuous at over 80% efficiency, while maintaining over 80% efficiency at load currents as low as 10 mA. Pulse currents as high as 6.5 A can be supported by the 05 option. The regulator operates at a nominal fixed frequency of 2.4 MHz, which reduces the value of the external components to 330 nH for the output induction and as low as 20 µF for the output capacitor. Additional output capacitance can be added to improve regulation during load transients without affecting stability. Inductance up to 1.2 µH may be used with additional output capacitance. At moderate and light loads, Pulse Frequency Modulation (PFM) is used to operate in Power-Save Mode with a typical quiescent current of 60 µA. Even with such a low quiescent current, the part exhibits excellent transient response during large load swings. At higher loads, the system automatically switches to fixed-frequency control, operating at 2.4 MHz. In Shutdown Mode, the supply current drops below 1 µA, reducing power consumption. PFM Mode can be disabled if constant frequency is desired. The FAN53555 is available in a 20-bump, 1.6 x 2 mm, WLCSP.

Where to Buy

Prices starting from US$0.38

Distributor Stock
Logo for Rochester Electronics
Rochester Electronics
from US$0.38
138,000
in stock
 Buy Now
Logo for Farnell UK
Farnell
from US$0.47
0
in stock
 Buy Now
Buy Now

Features

Fixed-Frequency Operation: 2.4 MHz
Best-in-Class Load Transient
Continuous Output Current Capability: 5 A
Pulse Current Capability: 6.5 A (05 Option)
2.5 V to 5.5 V Input Voltage Range
Digitally Programmable Output Voltage:
00/01/03/05/08 Options: 0.60-1.23 V in 10 mV Steps
04/042 Option: 0.603-1.411 V in 12.826 mV Steps
Programmable Slew Rate for Voltage Transitions
I2C-Compatible Interface Up to 3.4 Mbps
PFM Mode for High Efficiency in Light Load
Quiescent Current in PFM Mode: 60 µA (Typical)
Internal Soft-Start
Input Under-Voltage Lockout (UVLO)
20-Bump Wafer-Level Chip Scale Package (WLCSP)
Thermal Shutdown and Overload Protection

Specifications

Description FAN53555, 0.85V
Compliance Pb-free Halide free
Topology Step-Down
Control Mode Voltage Mode
VCC Min (V) 2.5
VCC Max (V) 5.5
VO Typ (V) Adjustable
IO Typ (A) 5
Efficiency (%) 80
fSW Typ (kHz) 2400
Package Type WLCSP-20

Last 6 months Inventory & Pricing History

Alternative Descriptions

DC / DC SWITCHING REGULATORS - ADJUSTABL | Farnell

Frequently Asked Questions

Where can I find additional details, specifications and documents for a FAN53555BUC79X?

Additional datasheets, footprints and schematics for FAN53555BUC79X are listed on our Part Details page. You can also find images and similar parts to FAN53555BUC79X on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for FAN53555BUC79X on our Product Comparison page. Access via the 'View Pricing & Stock' button to view FAN53555BUC79X price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does FAN53555BUC79X fall under?

The FAN53555BUC79X is listed under Power Management > DC-DC Power Conversion > Converters.

Can I view similar or alternative parts?

You can view similar parts to FAN53555BUC79X when available in the Converters range under the specifications section at the bottom of the details page.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the FAN53555BUC79X you can contact the distributor directly for product support, shipping queries etc.

Is the FAN53555BUC79X RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by ON Semiconductor.

Which authorised distributors for FAN53555BUC79X have stock available?

Authorised distributors including Rochester Electronics and Farnell have stock available or on a lead time for FAN53555BUC79X.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for FAN53555BUC79X often in real-time on the comparison pages.

What if I can't find stock of FAN53555BUC79X?

You can fill out our help required form which you can use to request a quote for FAN53555BUC79X from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.