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SC1406GCTSTR Arkusz danych(PDF) 1 Page - Semtech Corporation |
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SC1406GCTSTR Arkusz danych(HTML) 1 Page - Semtech Corporation |
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1 / 28 page  1 www.semtech.com POWER MANAGEMENT SC1406G Power Supply Controller for Portable Pentium ® II & III SpeedStep Processors SC1406G Power Supply Controller for Portable Pentium ® II & III SpeedStep Processors Description Features Conceptual Application Circuit Applications Revision 8/3/2000 The SC1406G PowerStep controller is a High Speed, High Performance Hysteretic Mode PWM controller. Teamed with the SC1405 Smart Driver, it powers ad- vanced Pentium® II and Pentium® III processors. The SC1406G features Intel Mobile Voltage Positioning (IMVP), which increases battery life by reducing the volt- age at the processor when it is heavily loaded. It also directly supports Intels SpeedStep processors for even longer battery life. A 5-bit DAC, accurate to 0.85%, sets the output voltage reference, and implements the 0.925V to 2.00V range of the mobile Pentium® specifications. The hysteretic converter uses a comparator without an error amplifier, and therefore provides the fastest possible transient response, while avoiding the stability issues inherent to classical PWM controllers. Two linear regulator controllers, coupled with appropri- ate external transistors, produce tightly regulated 1.5V and 2.5V to complete the processor power solution. The SC1406G also features separate soft-start con- trols for the converter and the regulators, a TTL- compatible power good indication, logic enable, and low battery undervoltage lockout. Programmable current limiting uses a separate comparator to protect against overloads and short-circuits. u High-speed hysteretic controller provides high effi ciency over a wide operating load range u Inherently stable u Complete CPU power solution with two LDO drivers u Programmable core voltage for Pentium® II & III pro cessors u Native Speed Step® support u Laptop and notebook computers u High performance microprocessor-based systems u High efficiency distributed power supplies SC1406G IMVP CONTROLLER SC1406G IMVP CONTROLLER VID [4:0] VID [4:0] SC1405 Smart MOSFET Driver SC1405 Smart MOSFET Driver Lo +VCC_CPU_CORE +VCC_CPU_CORE Co 3.3V +VCC_CPU_IO +VCC_CPU_IO +VCC_CPU_CLK +VCC_CPU_CLK 1.5V 2.5A 2.5V 150mA +V_IN +V_5 3.3V 0.925V-2.0V Up to 14A LDO Controller LDO Controller PWM Controller SC1406G IMVP CONTROLLER SC1406G IMVP CONTROLLER VID [4:0] VID [4:0] SC1405 Smart MOSFET Driver SC1405 Smart MOSFET Driver Lo +VCC_CPU_CORE +VCC_CPU_CORE Co 3.3V +VCC_CPU_IO +VCC_CPU_IO +VCC_CPU_CLK +VCC_CPU_CLK 1.5V 2.5A 2.5V 150mA +V_IN +V_5 3.3V 0.925V-2.0V Up to 14A LDO Controller LDO Controller PWM Controller |
Podobny numer części - SC1406GCTSTR |
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Podobny opis - SC1406GCTSTR |
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