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SI9166BQ-T1-E3 Datasheet(PDF) 1 Page - Vishay Siliconix |
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SI9166BQ-T1-E3 Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 11 page Si9166 Vishay Siliconix Document Number: 70847 S-40701—Rev. C, 19-Apr-04 www.vishay.com 1 High Frequency Programmable Topology Controller FEATURES D Buck or Boost Configuration D Voltage Mode Control D 2.7-V to 6-V Input Voltage Range for VDD and VS D Programmable PWM/PSM Control − Up to 2-MHz Switching Frequency in PWM − Synchronous Rectification in PWM − Less than 200-mA IDD in PSM D Integrated UVLO and POR D Integrated Soft-Start D Synchronization D Shutdown Current <1 mA DESCRIPTION The Si9166 is a programmable topology controller for today’s continuous changing portable electronic market. Si9166 provides flexibility of utilizing various battery configurations and chemistries such as NiCd, NiMhy, or Li+ with input voltage range of 2.7 V to 6 V. An additional flexibility is provided with topology programmability to power multiple loads such as power amplifiers, microcontrollers, or baseband logic IC’s. The converters can be programmed to be synchronous Buck or Boost topology. For ultra-high efficiency, converters are designed to operate in synchronous rectified PWM mode under full load while transforming into externally controlled pulse skipping mode (PSM) under light load. All these features are provided by the Si9166 without sacrificing system integration requirements of fitting these circuits into ever demanding smaller and smaller space. The Si9166 is capable of switching up to 2 MHz to minimize the output inductor and capacitor size in order to decrease the overall converter size. The Si9166 is available in both standard and lead (Pb)-free TSSOP-16 pin packages and specified to operate over the industrial temperature range of −25_C to 85_C. TYPICAL APPLICATION CIRCUITS Boost Configuration Buck Configuration VS MODE N/C SD DH DL PWM/PSM PGND SYNC VO GND VDD REF ROSC FB COMP DD S1 S2 S1 S2 G1 G2 Si6803 Si9166 VOUT VIN SD N/C PWM/PSM SYNC VS MODE N/C SD DH DL PWM/PSM PGND SYNC VO GND VDD REF ROSC FB COMP DD S1 S2 S1 S2 G1 G2 Si6803 Si9166 VOUT VIN SD N/C PWM/PSM SYNC |
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