ONSEMI FAN5909UCX

Manufacturer No:

FAN5909UCX

Manufacturer:

ONSEMI

Package:

16-UFBGA, WLCSP

Description:

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

Quantity:

Delivery:

Payment:

In Stock :Available

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FAN5909UCX information

ONSEMI FAN5909UCX technical specifications, attributes, parameters and parts with similar specifications to ONSEMI FAN5909UCX.

Type
Parameter

Topology
Step-Down

Control Mode
Voltage Mode

VO Typ (V)
Adjustable

IO Typ (A)
3

Package Type
WLCSP-16

MSL Temp (°C)
260

MSL Type
1

Container Qty.
3000

Efficiency (%)
95

VCC Min (V)
2.7

VCC Max (V)
5.5

fSW Typ (kHz)
2900

Case Outline
567SD

Container Type
REEL

Download datasheets and manufacturer documentation for ONSEMI FAN5909UCX.

Datasheet:

34bc4497f48aa47ea0f1911a211d3cb4.pdf

Package Drawing:

2f775724bf82ba4bb5e48550d87fe6af.pdf

The FAN5909 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 2.5 A are allowed, which enables GSM / EDGE, 3 G/3.5 G, 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 of less than 6 µs 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 FAN5909 DC-DC operates in PWM Mode with a 2.9 MHz switching frequency and supports a single, smallform-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 FAN5909 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. FAN5909 is available in a low profile, small form factor, 16 bump, Wafer-Level Chip-Scale Package (WLCSP) that is 1.61 mm x 1.61 mm. Only three external components are required: two 0402 capacitors and one 2016 inductor.

Feature

Solution Size < 9.52 mm²
2.7 V to 5.5 V Input Voltage Range
V_OUT Range from 0.40 V to 3.60 V (or V_IN)
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
6 μs Output Voltage Step Response for early Tx
Power-Loop Settling with 14 μF Load Capacitance
Sleep Mode for ~50 μA Standby Current
Consumption
Forced PWM Mode
2.9 MHz PWM-Only Mode
Up to 95% Efficient Synchronous Operation in High Power Conditions
2.9 MHz PWM Operation at High Power and PFM Operation at Low Power and Low Output Voltage for Maximum Low Current Efficiency
Auto PFM/PWM Mode

User Guide

PURCHASE

Please verify all part numbers, quantities, and packaging preferences before placing your order. If substitutions are acceptable, please indicate this clearly. For time-sensitive projects, confirm estimated delivery dates and stock availability in advance. Once submitted, changes or cancellations may not be possible, especially for items marked as non-cancellable/non-returnable (NCNR). For international shipments, please ensure all import documentation is complete and accurate to avoid delays.

MEANS OF PAYMENT

For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and Wire Transfer. Net terms may be available for qualified customers upon approval.

RFQ (REQUEST FOR QUOTATIONS)

Please ensure the part numbers and quantities are accurate and complete when submitting your RFQ.
Provide target prices and acceptable alternatives, if any, to speed up the quotation process.

IMPORTANT NOTICE

Quotations are subject to stock availability and may vary with market conditions. Prices and lead times are not guaranteed until a purchase order is confirmed. Ensure your contact details are correct to avoid delays in response.

Step1：Prepare product

Step2：Desiccant Protection

Step3：Vacuum Packaging

Step4：Individual Package

Step5：Anti-collision Filling

Step6：Packaging Box

SHIPPING COST

1. Shipping starts at $40, but some countries will exceed $40. For example (South Africa, Brazil, India, Pakistan, Israel, etc.).
2. Some specific products need to reach the minimum order quantity.
3. It may cost additional remote fees for delivery if you are in a remote area.

SHIPPING METHOD

Currently, our products are shipped through DHL, FedEx, SF, and UPS.

DELIVERY TIME

1. Once the goods are shipped, estimated delivery time depends on the shipping methods you chose: FedEx International, 5-7 business days.
2. For in-stock parts, orders normally could be shipped out within 1-2days.