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SI9169BQ-T1 |SI9169BQT1VISHAYN/a498avaiHigh Frequency 1-A Synchronous Buck/Boost Converter


SI9169BQ-T1 ,High Frequency 1-A Synchronous Buck/Boost ConverterS-40695—Rev. D, 19-Apr-042Si9169Vishay SiliconixSPECIFICATIONST Test Conditions est ConditionseLimi ..
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SM15T12A ,TRANSILSM15T6V8A/220A®SM15T6V8CA/220CATMTRANSIL
SM15T12CA ,TRANSILSM15T6V8A/220A®SM15T6V8CA/220CATMTRANSIL
SM15T150A ,TRANSILTMFEATURESn PEAK PULSE POWER : 1500 W (10/1000μs)n BREAKDOWN VOLTAGE RANGE :From 6.8 V to 220 Vn UNI ..
SM15T150CA ,TRANSILFEATURESn PEAK PULSE POWER : 1500 W (10/1000μs)n BREAKDOWN VOLTAGE RANGE :From 6.8 V to 220 Vn UNI ..
SM15T15A ,TRANSILSM15T6V8A/220A®SM15T6V8CA/220CATMTRANSIL
SM15T15CA ,TRANSILSM15T6V8A/220A®SM15T6V8CA/220CATMTRANSIL


SI9169BQ-T1
High Frequency 1-A Synchronous Buck/Boost Converter
Si9169
Vishay Siliconix
High Frequency 1-A Synchronous Buck/Boost Converter

FEATURES Voltage Mode Control Fully Integrated MOSFET Switches 2.7-V to 6-V Input Voltage Range Programmable PWM/PSM Control Up to 1-A Output Current @ 3.6 V in PWM Up to 2-MHz Adjustable Switching Frequency in PWM Less than 200-�A Quiescent Current in PSM Integrated UVLO and POR Integrated Soft-Start Synchronization Shutdown Current <1 �A
DESCRIPTION
The Si9169 provides fully integrated synchronous buck or
boost converter solution for the latest one cell Lithium Ioncellular phones. Capable of delivering up to 1 A of output
current at +3.6 V, the Si9169 provides ample power for variousbaseband circuits as well as for some PAs. It combines the
2-MHz switching controller with fully integrated high-frequencyMOSFETs to deliver the smallest and most efficient converteravailable today. The 2-MHz switching frequency reduces the
inductor height to new level of 2 mm and minimizes the outputcapacitance requirement to less than 10 �F with peak-to-peak
output ripple as low as 10 mV. Combined with low-gate chargehigh-frequency MOSFETs, the Si9169 delivers efficiency up to95%. The programmable pulse skipping mode maintains this
high efficiency even during the standby and idle modes toincrease overall battery life and talktime. In order to extract the
last ounce of power from the battery, the Si9169 is designed
with 100% duty cycle control for buck mode. With 100% dutycycle, the Si9169 operates like a saturated linear regulator to
deliver the highest potential output voltage for longer talktime.
Si9169 can be a drop-in replacement of Si9165 provided Pin 1is not connected. For full 1A load condition, Pin 1 is requiredto be connected to low power controller ground.
The Si9169 is available in both standard and lead (Pb)-freeTSSOP-20 pin package. In order to satisfy the stringentambient temperature requirements, the Si9169 is rated to
handle the industrial temperature range of −25�C to 85�C and−40�C to 85�C.
OUTPUT0 � 1 AINPUT2.7 � 6 V2.7 � 6 V
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