SEMTECH Manuals

This is a product manual

1 phase full wave bridge rectifiers SCBA05F, SCBA1F, SCBA2F, SCBA4F datasheet

The SC606 is a very high efficiency charge pump white/color LED driver from the mAhXLifeTM family of products. It is optimized for Li-Ion battery applications. The LED current is regulated to a value configured by the user through an I2C compatible serial interface. LED outputs are current-matched for consistent LED brightness. Up to 6 LEDs are controlled in three zones for brightness control in multiple displays. The 6 LED outputs are divided into 3 pairs of LEDs. Each pair has current that is programmable independent of the other pairs. Any combination of LEDs may be turned on using the serial interface. The SC606 also has a float detect feature that disables any current driver during normal operation when an open-load condition is detected. Patented low noise switching circuitry and constant output current allow the use of extremely small input and output capacitors.

The SC605 is a high-current charge pump designed specifically for use with white LEDs used in camera flash applications.

SC605 is a high-current charge pump designed specifically for use with white LEDs used in camera flash applications. It has two modes of operation: Flash mode and Spotlight mode. In Flash mode, the SC605 is capable of delivering 500mA of regulated current for a duration of 500ms or up to 700mA for a reduced duration. In Spotlight mode the SC605 can output 20%, 30%, or 40% of the Flash mode current and remain enabled continuously.

The SC604A is a very high efficiency charge pump white LED driver optimized for Li-Ion battery applications. It features four LED outputs that are current matched for consistent LED brightness. The charge pump automatically reconfigures to match circuit conditions, resulting in extremely low battery current. With four LEDs, each at 20mA, the SC604A can use less than 83mA from the supply for most of the battery life. It utilizes patented low noise mode switching circuitry and constant output current, allowing for the use of extremely small input and output capacitors. The product offers high efficiency, current regulation, a wide range of current options, and various protection features.

The SC603 is a versatile charge pump designed for use in battery operated power supply applications. It has selectable 5.0V or 4.5V output voltage, with maximum output current of 200mA and 160mA respectively.

Semtech SC600 mAhXLifeTM LED Driver with 5.0V, 4.5V, or 4.0V Output is a power management IC designed for battery operated power supply applications. It features high efficiency and small size.

The SC1401 is a synchronous buck regulator designed to power the latest generation microprocessors in battery operated systems. It can provide both the I/O and core voltages utilizing synchronous rectification for the core supply voltage and an LDO N-Channel MOSFET controller for the I/O supply voltage. A 1.25 volt reference allows lower output voltages required by today’s portable microprocessors. The synchronous buck regulator is capable of achieving efficiencies up to 95%. The gate drive circuitry can deliver 2.0A peak currents, allowing the use of N-channel MOSFETs for lower switching and conduction losses. A digital soft start is provided to ensure orderly start up of the power supply without the need for external components. At light load in power save mode, the controller changes mode of operation by missing gate drive cycles, thus reducing gate drive current and improving efficiency. A logic high on PSAVE disables the power saving mode thus reducing noise. The SC1401 is fabricated in a high performance BiCMOS process. This process reduces the power dissipation in low current and shutdown operation modes and improves efficiency. The LDO controller is a high performance positive voltage regulator designed to provide a low noise power source to the microprocessor peripherals.

The SC1205 is a cost effective Dual MOSFET Driver designed for switching High and Low side Power MOSFETs. Each driver is capable of driving a 3000pF load in 20ns rise/fall time and has a 20ns max propagation delay from input transition to the gate of the power FET’s. An internal Overlap Protection Circuit prevents shoot-through from Vin to GND in the main switching and synchronous MOSFET’s. The Overlap Protection circuit ensures the Bottom FET does not turn on until the Top FET source has reached a voltage low enough to prevent cross-conduction. The high current drive capability (2A peak) allows fast switching, thus reducing switching losses at high (1MHz) PWM frequencies. The high voltage CMOS process allows operation from 5-25 Volts at top MOSFET drain, thus making SC1205 suitable for battery powered applications. Connecting Enable pin (EN) to logic low shuts down both drives and reduces operating current to less than 10uA. An Under-Voltage-Lock-Out circuit is included to guarantee that both driver outputs are low when the 5V logic level is less than or equal to 4.4V (typ) at supply ramp up (4.35V at supply ramp down). An Internal temperature sensor shuts down all drives in the event of overtemperature. SC1205 is fabricated utilizing CMOS technology for low quiescen

SC1189 is a power management product produced by Semtech Corp. This product has multiple features, including low-dropout regulator, output voltage stability, overcurrent protection, power-up sequencing, etc.

The SC1186 combines a programmable synchronous DC/DC converter with dual low dropout regulator controllers. It provides most of the circuitry necessary to implement three DC/DC converters for powering advanced microprocessors such as Pentium II and III. The SC1186 features an integrated D/A converter, latched drive output, pulse by pulse current limiting, and logic compatible shutdown. It operates at a fixed frequency of 140kHz, striking an optimum compromise between size, efficiency, and cost in the intended application areas. The integrated D/A converter allows programmability of output voltage from 2.0V to 3.5V in 100mV increments without the need for external components. The SC1186 linear sections are low dropout regulators with short circuit protection, supplying 1.5V for GTL bus and 2.5V for non-GTL I/O. The reference voltage is available for external linear regulators.

The SC1185 is a 3.3V switching power supply chip from SEMTECH. It has a built-in 5-bit D/A converter that can be used to adjust the output voltage from 2.0V to 3.5V in 100mV increments. It also has overcurrent protection and soft-start functionality. The chip also includes two low-dropout linear regulators that can provide 1.5V and 2.5V for GTL buses and non-GTL I/O, respectively.