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FAN53526UC128X

The FAN53526UC128X is a digitally programmable step-down switching voltage regulator from Fairchild Semiconductor. It offers a continuous output current capability of 3.0 A.

✓ Total Stock: 12,700 pcs

$ Price Range: $1.08

FAN53526UC128X Available from 2 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Optech Co.,Limited ✓ Non-Authorised Inventory information	12,500 pcs On Request	12500 pcs	On Request	1	On Request	On Request	16+	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	200 pcs On Request	200 pcs	On Request	1	On Request	On Request	16+	On Request	On Request

FAN53526UC128X Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Fairchild Camera&Instrument
Interface	3.4 Mbps
Mounting Type	Surface Mount
Operating Temperature	-40 °C / 85 °C
Output Current	3.0 A
Output Voltage	1.25 V
Quiescent Current	50 µA

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FAN53526UC128X Description

Short technical summary and product information.

The FAN53526UC128X is a digitally programmable step-down switching voltage regulator designed by Fairchild Semiconductor. It operates from an input voltage range of 2.5 V to 5.5 V and can deliver a continuous output current of up to 3.0 A. The regulator features a fixed switching frequency of 2.4 MHz, which helps reduce the size of external components.

This device utilizes an I2C-compatible interface for digitally programming the output voltage, which can be adjusted from 0.600 V to 1.39375 V in 6.25 mV steps. It also includes Power-Save Mode (PFM) for high efficiency at light loads, with a typical quiescent current of 50 µA. At higher loads, it automatically switches to fixed-frequency control.

The FAN53526UC128X is available in a compact 15-bump WLCSP package, making it suitable for space-constrained applications. It is designed for applications such as processors, hard disk drives, LPDDR3/4, tablets, smartphones, and gaming devices.

FAN53526UC128X Quick Information

Product Type: DC DC Switching Regulator

Series: FAN53526

Canonical Name: Digitally Programmable TinyBuck Regulator

Subcategory: DC DC Switching Regulator

FAN53526UC128X Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

FAN53526UC128X Estimated Pricing

Qty	Low	High
1+	$1.08	$1.08

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

FAN53526UC128X Features

Digitally programmable output voltage via I2C.
3.0 A continuous output current capability.
Fixed 2.4 MHz switching frequency.
Power-Save Mode for light-load efficiency.
Compact 15-bump WLCSP package.

FAN53526UC128X Applications

Suitable for application processors.
Used in hard disk drives.
Ideal for LPDDR3 and LPDDR4.
Applications in smartphones and tablets.
Designed for gaming devices.

FAN53526UC128X FAQs

7 frequently asked questions generated from this part’s specifications.

What is the input voltage range of the FAN53526UC128X?

The input voltage range is 2.5 V to 5.5 V.

How is the output voltage programmed?

The output voltage is digitally programmable via an I2C-compatible interface from 0.600 V to 1.39375 V in 6.25 mV steps.

What is the maximum output current?

The continuous output current capability is 3.0 A.

What is the switching frequency?

The switching frequency is fixed at 2.4 MHz.

What package is the FAN53526UC128X available in?

The device is available in a WLCSP-15 (15-bump wafer-level chip-scale package).

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

Does the device support I2C communication?

Yes, it has an I2C-compatible interface supporting data rates up to 3.4 Mbps.