Overview
The FAN53526UC100X is a digitally programmable step-down switching voltage regulator produced by Fairchild Semiconductor, now part of ON Semiconductor. This regulator is designed to deliver high efficiency and flexibility in power management for various electronic systems. It utilizes a proprietary architecture with synchronous rectification, enabling it to achieve over 80% efficiency across a wide range of load currents, from 10 mA to 3.0 A. The device operates with an input voltage range of 2.5 V to 5.5 V and can be programmed via an I2C interface to set the output voltage in fine steps of 6.25 mV.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Continuous Output Current Capability | 3.0 | A |
| Input Voltage Range | 2.5 to 5.5 | V |
| Digitally Programmable Output Voltage | 0.600 to 1.39375 | V (in 6.25 mV steps) |
| I2C Interface Speed | Up to 3.4 Mbps | |
| Switching Frequency | 2.4 MHz | |
| Quiescent Current in PFM Mode | 50 μA (Typical) | |
| Thermal Shutdown Temperature | 150 °C | |
| Package Type | 15-Bump Wafer-Level Chip Scale Package (WLCSP) |
Key Features
- High efficiency with synchronous rectification, achieving over 80% efficiency at load currents as low as 10 mA.
- Digitally programmable output voltage via I2C interface, with steps as small as 6.25 mV.
- Programmable slew rate for voltage transitions.
- PFM mode for high efficiency in light-load conditions.
- Input under-voltage lockout (UVLO) and thermal shutdown with overload protection.
- Compact 15-bump WLCSP package.
Applications
- Graphic, and DSP processors (e.g., ARM, Tegra, OMAP, NovaThor, ARMADA, Krait).
- Hard Disk Drives.
- LPDDR3 and LPDDR4 memory modules.
- Tablets and other portable electronic devices.
Q & A
- What is the maximum continuous output current of the FAN53526UC100X?
The maximum continuous output current is 3.0 A.
- What is the input voltage range for the FAN53526UC100X?
The input voltage range is from 2.5 V to 5.5 V.
- How is the output voltage programmed in the FAN53526UC100X?
The output voltage is programmed via an I2C interface.
- What is the switching frequency of the FAN53526UC100X?
The nominal switching frequency is 2.4 MHz.
- What is the quiescent current in PFM mode for the FAN53526UC100X?
The quiescent current in PFM mode is typically 50 μA.
- What kind of protection features does the FAN53526UC100X have?
The device features input under-voltage lockout (UVLO), thermal shutdown, and overload protection.
- What is the package type of the FAN53526UC100X?
The device is packaged in a 15-bump Wafer-Level Chip Scale Package (WLCSP).
- What are some typical applications for the FAN53526UC100X?
Typical applications include graphic and DSP processors, hard disk drives, LPDDR3 and LPDDR4 memory modules, and tablets.
- How efficient is the FAN53526UC100X at low load currents?
The device maintains over 80% efficiency even at load currents as low as 10 mA.
- Can the slew rate for voltage transitions be programmed?
Yes, the slew rate for voltage transitions can be programmed.
