Fairchild Manuals

The FAN5362 is a 500mA or 750mA, step-down, switching voltage regulator that delivers a fixed output voltage from an input voltage supply of 2.7V to 5.5V. Using a proprietary architecture with synchronous rectification, the FAN5362 is capable of delivering a peak efficiency of 96%, while maintaining efficiency over 90% with load currents as low as 1mA. This regulator transitions seamlessly into and out of 100% duty cycle operation when the supply voltage drops.

FAN5361 6MHz，600mA / 750mA Synchronous Buck Regulator

The FAN53601 / FAN53611 is a 6MHz, 600mA / 1A synchronous buck regulator that delivers a fixed output from an input voltage supply of 2.3V to 5.5V. It features a 24µA typical quiescent current, 6MHz fixed-frequency operation, best-in-class load transient response, and best-in-class efficiency. Additionally, it offers low ripple light-load PFM mode, forced PWM and external clock synchronization, internal soft-start, input under-voltage lockout (UVLO), thermal shutdown and overload protection, and optional output discharge.

The FAN5358 is a 2MHz, 500mA, SC70 synchronous buck regulator. It operates at a nominal frequency of 2MHz, has a typical quiescent current of 25µA, 500mA output current capability, 2.7V to 5.5V input voltage range, 1.0 to 1.8V fixed output voltages, low ripple, light-load PFM mode, internal soft-start, input under-voltage lockout, thermal shutdown, and overload protection.

The FAN5355 is a 3MHz digitally programmable regulator that provides 800mA, 1A, or 1.1A output current. The device features an I2C™-compatible interface, output voltage range of 0.75V to 1.975V, input voltage range of 2.7V to 5.5V, 3MHz fixed-frequency operation, excellent load and line transient response, small size, 1µH inductor solution, ±2% PWM DC voltage accuracy, 35ns minimum on-time, high efficiency, low ripple, light-load PFM, smooth transition between PWM and PFM, and 37µA operating PFM quiescent current. The device is available in a 10-lead MLP (3 x 3mm) or 12-bump CSP package and is suitable for applications such as mobile phones, smart phones, 3G, WiFi®, WiMAX™, and WiBro® data cards, Netbooks®, ultra-mobile PCs, SmartReflex™-compliant power supply, split supply DSPs and µP solutions OMAP™, XSCALE™, mobile graphics processors (NVIDIA®, ATI), and LPDDR2 and memory modules.

The FAN53540 is a 2.4MHz, 5A TinyBuck™ synchronous buck regulator. It has the following features: 2.4MHz fixed-frequency operation, best-in-class load transient response, 5A output current capability, 2.7V to 5.5V input voltage range, adjustable output voltage: 0.8V to VIN•0.9, PFM mode for high efficiency in light load (Forced PWM Available on MODE Pin), 50µA Typical Quiescent Current in PFM Mode, External Frequency Synchronization, Low Ripple Light-Load PFM Mode with Forced PWM Control, Power Good Output, Internal Soft-Start, Input Under-Voltage Lockout (UVLO), Thermal Shutdown and Overload Protection, No External Compensation Required, 20-Bump WLCSP.

The FAN5354 is a 3MHz fixed-frequency synchronous buck regulator that delivers an adjustable output from an input voltage supply of 2.7V to 5.5V.

The FAN5353 is a 3MHz fixed-frequency synchronous buck regulator that delivers an adjustable output from an input voltage supply of 2.7V to 5.5V. It has a 3A output current capability, a 2.7V to 5.5V input voltage range, an adjustable output voltage of 0.8V to VIN•0.9, a power good output, internal soft-start, input under-voltage lockout (UVLO), thermal shutdown and overload protection, and a 12-lead 3x3.5mm MLP package.

The FAN5350 is a 3MHz, 600mA step-down DC-DC converter in chip-scale and MLP packaging. The features include 3MHz fixed-frequency operation, 16µA typical quiescent current, 600mA output current capability, 2.7V to 5.5V input voltage range, 1.82V fixed output voltage, synchronous operation, power-save mode, soft-start capability, input under-voltage lockout (UVLO), thermal shutdown and overload protection, 6-lead 3 x 3mm MLP and 5-bump 1 x 1.37mm WLCSP packaging. Applications include cell phones, smart-phones, pocket PCs, WLAN DC-DC converter modules, PDA, DSC, PMP, and MP3 players and portable hard disk drives.

FAN5331 is a high-efficiency LED driver and OLED supply with 20V integrated switch from FAIRCHILD Semiconductor Corporation. It features 1.6MHz switching frequency, low noise, low R DS(ON): 0.5 Ω, adjustable output voltage, 1A peak switch current, 1W output power capability, low shutdown current: <1µA, cycle-by-cycle current limit, over-voltage protection, fixed-frequency PWM operation, internal compensation, 5-lead SOT-23 package, and is suitable for applications such as cell phones, PDAs, handheld equipment, display bias, and LED bias.

The FAN5236 is a dual mobile-friendly DDR / dual-output PWM controller. It features a highly flexible dual synchronous switching PWM controller with DDR mode and 90° phase-shifted two-stage DDR mode for reduced channel interference and input ripple. It also has a complete DDR memory power solution, supports DDR-II and HSTL, and maximizes efficiency.

The FAN5234 is a PWM/PFM controller with dual mobile-friendly features produced by Fairchild Semiconductor Corporation. It has a wide input voltage range of 2V to 24V, excellent dynamic response, lossless current sensing, precise over-current detection, undervoltage lockout, power good signal, light-load hysteresis mode that maximizes efficiency, and 300KHz or 600KHz operation.

The FAN5069 is a device that combines a high-efficiency PWM controller and an LDO linear regulator controller. It features high efficiency over a wide range of load currents and adjustable current limit. The device is suitable for applications such as PC/server motherboard peripherals, FPGA, DSP, embedded controllers, graphic card processors, and communication processors.

The FAN5026 is a dual DDR / dual-output PWM controller that provides high efficiency and regulation for powering I/O, chip-sets, and memory banks in high-performance computers, set-top boxes, and VGA cards. It features DDR mode, two independent regulators, wide input range, and supports DDR-II and HSTL.

The FAN4860 is a low-power boost regulator designed to provide a regulated 3.3V or 5V output from a single cell Lithium or Li-Ion battery. Output voltage options are fixed at either 3.3V or 5.0V with a guaranteed maximum load current of 200mA at VIN=2.3V and 300mA at VIN=3.3V. Input current in shut-down mode is less than 1µA, which maximizes battery life. Light-load PFM operation is automatic and “glitch-free”.