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SC1403 Datasheet

Part Number SC1403
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description Mobile Multi-Output PWM Controller with Virtual Current SenseTM
Datasheet SC1403 DatasheetSC1403 Datasheet (PDF)

Mobile Multi-Output PWM Controller with Virtual Current SenseTM POWER MANAGEMENT Description The SC1403 is a multiple-output power supply controller designed to power battery operated systems. The SC1403 provides synchronous rectified buck converter control for two (3.3 V and 5 V) power supplies. An efficiency of 95% can be achieved for the two supplies. The SC1403 uses Semtech’s proprietary Virtual Current SenseTM technology along with external error amplifier compensation to achieve enhanced s.

  SC1403   SC1403






Part Number SC1409
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description 1 A Synchronous Switching Regulator
Datasheet SC1403 DatasheetSC1409 Datasheet (PDF)

1 A Synchronous Switching Regulator June 28, 2000 SC1409 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1409 is a versatile, voltage-mode switching regulator designed for use in battery operated power supply applications. A simple, fixed-voltage buck regulator can be implemented using the SC1409 with a minimum of external components. Internal MOSFETs and control circuitry minimize board space and design time. The small device footprint allows for compact circui.

  SC1403   SC1403







Part Number SC1408
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description LOW VOLTAGE/ BOOST DC-DC CONTROLLER
Datasheet SC1403 DatasheetSC1408 Datasheet (PDF)

LOW VOLTAGE, BOOST DC-DC CONTROLLER August 22, 2000 SC1408 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1408 is a low voltage boost controller that operates from a 1.8V to 16.5V input range. A shutdown pin allows the user to turn the controller off reducing supply current to less than 2µA typical. Output voltage can be preset to 5V or is adjustable from 3V to 16.5V with a resistor divider. The controller changes frequency in low load conditions to improve eff.

  SC1403   SC1403







Part Number SC1406G
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description Power Supply Controller for Portable Pentium II & III SpeedStep Processors
Datasheet SC1403 DatasheetSC1406G Datasheet (PDF)

Power Supply Controller for Portable Pentium ® II & III SpeedStep™ Processors POWER MANAGEMENT Description The SC1406G PowerStep™ controller is a High Speed, High Performance Hysteretic Mode PWM controller. Teamed with the SC1405 Smart™ Driver, it powers advanced Pentium® II and Pentium® III processors. The SC1406G features Intel Mobile Voltage Positioning (IMVP), which increases battery life by reducing the voltage at the processor when it is heavily loaded. It also directly supports Intel’s Sp.

  SC1403   SC1403







Part Number SC1406A
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description PORTABLE PENTIUM II & III POWER SUPPLY CONTROLLER
Datasheet SC1403 DatasheetSC1406A Datasheet (PDF)

PORTABLE PENTIUM II & III POWER SUPPLY CONTROLLER January 28, 2000 ® SC1406A TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1406A is a High Speed, High performance Hysteretic Mode controller. It is part of a two chip solution, with the SC1405 Smart Driver, providing power to advanced micro-processors. It uses a Dynamic Set Point switching technique along with an ultra-fast comparator to provide the control signal to an external high speed Mosfet driver. A 5-bi.

  SC1403   SC1403







Part Number SC1406
Manufacturers Semtech Corporation
Logo Semtech Corporation
Description PORTABLE PENTIUM II & III POWER SUPPLY CONTROLLER
Datasheet SC1403 DatasheetSC1406 Datasheet (PDF)

PORTABLE PENTIUM II & III POWER SUPPLY CONTROLLER PRELIMINARY - August 27, 1999 ® SC1406 TEL:805-498-2111 FAX:805-498-3804 WEB:http://www.semtech.com DESCRIPTION The SC1406 is a High Speed, High performance Hysteretic Mode controller. It is part of a two chip solution, with the SC1405 Smart Driver, providing power to advanced micro-processors. It uses a Dynamic Set Point switching technique along with an ultra-fast comparator to provide the control signal to an external high speed Mosfet dri.

  SC1403   SC1403







Mobile Multi-Output PWM Controller with Virtual Current SenseTM

Mobile Multi-Output PWM Controller with Virtual Current SenseTM POWER MANAGEMENT Description The SC1403 is a multiple-output power supply controller designed to power battery operated systems. The SC1403 provides synchronous rectified buck converter control for two (3.3 V and 5 V) power supplies. An efficiency of 95% can be achieved for the two supplies. The SC1403 uses Semtech’s proprietary Virtual Current SenseTM technology along with external error amplifier compensation to achieve enhanced stability and DC accuracy over a wide range of output filter components while maintaining fixed frequency operation. The SC1403 also provides a linear regulator for system housekeeping. The 5 V linear regulator takes its input from the battery; for efficiency, the output is switched to the 5V output when available. Control functions include: power up sequencing, soft start, power-good signaling, and frequency synchronization. Line and load regulation is to +/-1% of the output voltage. The internal oscillator can be adjusted to 200 kHz or 300 kHz or synchronized to an external clock. The MOSFET drivers provide >1A peak drive current for fast MOSFET switching. skipping mode for high efficiency at light load, or fixed frequency mode for low noise operation. SC1403 PRELIMINARY Features ‹ 3.3V and 5V dual synchronous outputs, resistor ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ ‹ programmable to 2.5V Fixed frequency or PSAVE for maximum efficiency over wide load current range 5V / 50mA linear regulator TM Virtual.


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