Overview
The FAN53526UC00X is a step-down switching voltage regulator produced by ON Semiconductor (previously Fairchild Semiconductor). It delivers a digitally programmable output voltage from an input voltage supply ranging from 2.5 V to 5.5 V. The output voltage is programmed through an I2C interface capable of operating up to 3.4 MHz. This regulator uses a proprietary architecture with synchronous rectification, enabling it to deliver 3.0 A continuous at over 80% efficiency, even at load currents as low as 10 mA. The regulator operates at a nominal fixed frequency of 2.4 MHz, which reduces the value of the external components required.
Key Specifications
| Parameter | Typical Value | Unit |
|---|---|---|
| Input Voltage Range | 2.5 V to 5.5 V | V |
| Output Voltage Range | 0.600 V to 1.39375 V | V |
| Output Voltage Steps | 6.25 mV | mV |
| Continuous Output Current | 3.0 A | A |
| Switching Frequency | 2.4 MHz | MHz |
| I2C Interface Speed | Up to 3.4 Mbps | Mbps |
| Quiescent Current in PFM Mode | 50 μA | μA |
| Thermal Shutdown Temperature | 150 °C | °C |
| Package Type | 15-bump WLCSP | |
| Package Dimensions | 1.310 mm x 2.015 mm, 0.4 mm ball pitch | mm |
Key Features
- Fixed-Frequency Operation: 2.4 MHz
- Best-in-Class Load Transient Response
- Digitally Programmable Output Voltage through I2C interface
- Programmable Slew Rate for Voltage Transitions
- Pulse Frequency Modulation (PFM) for High Efficiency in Light-Load
- Input Under-Voltage Lockout (UVLO)
- Thermal Shutdown and Overload Protection
- Low Quiescent Current in PFM Mode: 50 μA (Typical)
- Shutdown Mode with supply current below 1 μA
Applications
- Application, Graphics, and DSP Processors: ARM, Tegra, OMAP, NovaThor, ARMADA, Krait, etc.
- Hard Disk Drives, LPDDR3, LPDDR4
- Tablets, Netbooks, Ultra-Mobile PCs
- Smart Phones
- Gaming Devices
Q & A
- What is the input voltage range of the FAN53526UC00X?
The input voltage range is from 2.5 V to 5.5 V.
- What is the maximum continuous output current of the FAN53526UC00X?
The maximum continuous output current is 3.0 A.
- How is the output voltage programmed in the FAN53526UC00X?
The output voltage is programmed through an I2C interface capable of operating up to 3.4 Mbps.
- What is the switching frequency of the FAN53526UC00X?
The switching frequency is 2.4 MHz.
- What is the quiescent current in PFM Mode?
The quiescent current in PFM Mode is typically 50 μA.
- Does the FAN53526UC00X have thermal protection?
- What package type is the FAN53526UC00X available in?
- Can the PFM Mode be disabled?
- What is the typical supply current in Shutdown Mode?
- How does the regulator handle load transients?
