SI9145 Vishay, SI9145 Datasheet
SI9145
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SI9145 Summary of contents
Page 1
... Operation is guaranteed down to 2.7 V, with a minimum start-up voltage of 3.0 V making the Si9145 ideal for use with NiCd, NMH, and lithium ion battery packs. A mode select pin allows the output driver polarity to be programmed allowing the device to function as a step-up or step-down converter ...
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... Si9145 Vishay Siliconix ABSOLUTE MAXIMUM RATINGS Voltages Referenced to GND GND Linear Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Logic Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . RECOMMENDED OPERATING RANGE Voltages Referenced to GND ...
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... Typ Max −1 − −2.0 −1.0 0.4 0.8 60 0.85 1.0 1.15 1.2 200 −100 100 2.55 2.60 0.06 0.15 −180 −130 150 200 1.5 0 −1.0 0 −1.0 150 0.06 0.15 2.55 2.6 1.1 1.6 250 330 Si9145 b Unit 1 MHz 2.3 mA www.vishay.com 3 ...
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... Si9145 Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) V vs. Supply Voltage REF 1.515 V with 10 mA Load REF 1.510 1.505 1.500 1.495 1.490 1.485 − Supply Voltage ( vs. Load Current REF 1.515 1.510 1.505 2.7, 3.0, 3.6 V 1.500 7.0 V 1.495 1.490 1.485 ...
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... Document Number: 70021 S-40710—Rev. K, 19-Apr- 1.7 1.5 1.3 1.1 2.7 V 0.9 0.8 1.0 2.5 100 80 60 25_C 1.0 10.00 1.00 0.10 0. Si9145 Vishay Siliconix Supply Current vs. Supply Voltage and Temperature MHz T = 85_C A 25_C −25_C 3.5 4.5 5.5 6.5 V − Supply Voltage (V) DD Duty Cycle vs. D /SS Voltage MAX 1.1 1.2 1.3 1.4 1.5 D /SS (V) MAX Frequency vs. R ...
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... Si9145 Vishay Siliconix TYPICAL CHARACTERISTICS (25_C UNLESS NOTED) Output Rise Time vs. Supply Voltage and Load 2,200 900 pF 20 100 − Supply Voltage (V) DD Enable Delay to Output 50 40 Mode Select = High 30 Mode Select = Low 20 10 ...
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... MAX Figure 2 Document Number: 70021 S-40710—Rev. K, 19-Apr-04 Normal (Duty Cycle Limit) 1 OFF Set for 50% Max. Si9145 Timing Diagram (MODE SELECT = High) Normal (Duty Cycle Limit) 1 Si9145 Timing Diagram (MODE SELECT = Low) . Si9145 Vishay Siliconix Standby Standby www.vishay.com ...
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... R OSC ORDERING INFORMATION−TSSOP-16 Part Number Si9145BQ-T1 −25_ to 85_C 25_ to 85_C Si9145BQ-T1—E3 voltage at D duty cycle is proportionally limited to this voltage. The addition of external components can implement a soft start function. Pin 4: COMP This pin is the output of the error amplifier. A compensation network is connected from this pin to the FB pin to stabilize the system ...
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... This CMOS push-pull output pin drives the external MOSFET and is capable of sinking 150 mA or sourcing 130 mA with V equal to 2.7 V. Pin 16 The positive terminal of the power supply which powers the CMOS output driver. A bypass capacitor is required. Si9145 Vishay Siliconix SET Once the UVLO voltage SET supply. ...
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... 2.7 V − Figure 5. www.vishay.com Si9145 Non-Isolated Step Up Boost Converter for Si9145 Non-Isolated Step Down Buck Converter for V Q1 Si9145 Q2 Non-Isolated Synchronous Buck Converter for V V OUT > V OUT IN V OUT < V OUT IN L1 ...
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... Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right ...