FAN5910UCX DC-DC Power Conversion by ON Semiconductor

Multi-Mode Buck Converter with LDO Assist for GSM / EDGE, 3G/3.5G and 4G PAs

Semiconductors - ICs
> More Semiconductors - ICs
Status: Active
Series: FAN5910
RoHS: Compliant
Download Datasheet Visit Manufacturer Site View Pricing & Stock
The FAN5910 is a high efficiency, low noise, synchronous, step down, DC-DC converter optimized for powering Radio Frequency (RF) Power Amplifiers (PAs) in handsets and other mobile applications. Load currents up to 2.5A are allowed, which enables GSM / EDGE, 3G/3.5G, and 4G platforms under very poor VSWR conditions. The output voltage may be dynamically adjusted from 0.40 V to 3.60 V, proportional to an analog input voltage VCON ranging from 0.16 V to 1.44 V, optimizing power−added efficiency. Fast transition times are achieved, allowing excellent inter−slot settling. An integrated LDO is automatically enabled under heavy load conditions or when the battery voltage and voltage drop across the DC−DC PMOS device are within a set range of the desired output voltage. This LDO−assist feature supports heavy load currents under the most stringent battery and VSWR conditions while maintaining high efficiency, low dropout, and superior spectral performance. The FAN5910 DC−DC operates in PWM Mode with a 2.9 MHz switching frequency and supports a single, small form−factor inductor ranging from 1.0 µH to 2.2 µH. In addition, PFM operation is allowed at low load currents for output voltages below 1.5 V to maximize efficiency. PFM operation can be disabled by setting MODE pin to LOW. When output regulation is not required, the FAN5910 may be placed in Sleep Mode by setting VCON below 100 mV nominally. This ensures a very low IQ (<50 µA) while enabling a fast return to output regulation. FAN5910 is available in a low profile, small form factor, 16 bump, Wafer−Level Chip−Scale Package (WLCSP) that is 1.615 mm x 1.615 mm. Only three external components are required: two 0402 capacitors and one 2016 inductor.

Where to Buy

Prices starting from US$0.74

Distributor Stock
Logo for Farnell UK
Farnell
from US$0.74
0
in stock
 Buy Now
Logo for Newark
Newark Electronics
-
0
in stock
 Buy Now
Buy Now

Features

Solution Size < 9.52 mm2
2.7 V to 5.5 V Input Voltage Range
VOUT Range from 0.40 V to 3.60 V (VIN)
Single, Small Form-Factor Inductor
29 mΏ Integrated LDO
100% Duty Cycle for Low-Dropout Operation
Input Under-Voltage Lockout / Thermal Shutdown
1.61 mm x 1.61 mm, 16-Bump, 0.4 mm Pitch WLCSP
2.9 MHz PWM Mode
Sleep Mode for ~50 μA Standby Current
Forced PWM Mode
Up to 95% Efficient Synchronous Operation in High Power Conditions
2.9 MHz PWM-Only Mode
Auto PFM/PWM Mode
2.9 MHz PWM Operation at High Power and PFM Operation at Low Power and Low Output Voltage for Maximum Low Current Efficiency
Benefits
small solution size for phone
Applications
Dynamic Supply Bias for Polar or Linear GSM / EDGE PAs and 3G/3.5G and 4G PAs
Cellular phones, smart phones, tablets
End Products
Dynamic Supply Bias for GSM / EDGE Quad Band Amplifiers for Mobile Handsets and Data Cards

Specifications

Description FAN5910, RF step-down DCDC converter
Compliance Pb-free Halide free
Topology Step-Down
Control Mode Voltage Mode
VCC Min (V) 2.7
VCC Max (V) 5.5
VO Typ (V) Adjustable
IO Typ (A) 2.5
Efficiency (%) 95
fSW Typ (kHz) 2900
Package Type WLCSP-16

Last 6 months Inventory & Pricing History

Alternative Descriptions

DC / DC SWITCHING REGULATORS - ADJUSTABL | Farnell
Dc/Dc Rf Buck/ Reel |Onsemi FAN5910UCX | Newark Electronics

Frequently Asked Questions

Where can I find additional details, specifications and documents for a FAN5910UCX?

Additional datasheets, footprints and schematics for FAN5910UCX are listed on our Part Details page. You can also find images and similar parts to FAN5910UCX on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for FAN5910UCX on our Product Comparison page. Access via the 'View Pricing & Stock' button to view FAN5910UCX price breaks, MOQs, lead times, inventory and SKUs from distributors.

What category does FAN5910UCX fall under?

The FAN5910UCX is listed under Power Management > DC-DC Power Conversion > Converters.

Can I view similar or alternative parts?

You can view similar parts to FAN5910UCX 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 FAN5910UCX you can contact the distributor directly for product support, shipping queries etc.

Is the FAN5910UCX RoHS compliant?

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

Which authorised distributors for FAN5910UCX have stock available?

Authorised distributors including Farnell and Newark Electronics have stock available or on a lead time for FAN5910UCX.

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

Stock availability and lead times will be displayed for FAN5910UCX often in real-time on the comparison pages.

What if I can't find stock of FAN5910UCX?

You can fill out our help required form which you can use to request a quote for FAN5910UCX 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.