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TS3552 Arkusz danych(PDF) 2 Page - Taiwan Semiconductor Company, Ltd |
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TS3552 Arkusz danych(HTML) 2 Page - Taiwan Semiconductor Company, Ltd |
2 / 11 page TS3552 2A/350kHz Synchronous Buck DC/DC Converter 2/11 Version: B11 Absolute Maximum Rating Characteristics Symbol Rating Unit Maximum Supply Voltage VIN -0.3 ~ +24 V Switching Pin Input Voltage VSW -1 ~ (VIN +0.3) V Boost Voltage VBS (VSW -0.3) ~ (VSW +6) V All Other Pins -0.3 to +6 V Output Voltage VOUT 0.925 ~ 20 V Power Dissipation PD Internal Limited W Operating Temperature Range TOPR -40 to +85 ºC Storage Temperature Range TST -65 to +150 ºC Operating Junction Temperature Range TJ +150 ºC Thermal Resistance Junction to case θJC 40 ºC/W Thermal Resistance Junction to ambient θJA 120 ºC/W Note: Stresses exceed those rating may damage the device Note: θJA is measured with the PCB copper area of approximately 1 in 2 (multi-layer) Electrical Specifications (TA=25 oC, V IN=12V unless otherwise noted) Parameter Symbol Conditions Min Typ Max Unit Operating Voltage VIN 4.75 -- 23 V Shutdown Supply Current ISD VEN =0V -- 1 3 µA Feedback Voltage VFB 4.75V ≤ VIN ≤ 23V 0.9 0.925 0.95 V Load Regulation REGLOAD -2 -- +2 % High-Side MOSFET On-Resistance RDSON -- 130 -- m Low-Side MOSFET On-Resistance RDSON -- 130 -- m High-Side MOSFET Leakage Current IL(HIGH-SIDE) VEN = 0V, VSW = 0V -- -- 10 µA High-Side MOSFET Current Limit ILIMIT Minimum Duty 2.4 3.4 -- A Oscillator Frequency FOSC 280 350 430 KHz Short Circuit Oscillator Frequency FSC VFB =0V -- 90 -- KHz Maximum Duty Cycle DC VFB =0.8V -- 90 -- % Soft-Start Current ISS VSS=0V -- 6 -- µA Soft-Start Period CSS=0.1µF -- 15 -- mS EN Shutdown Threshold Voltage VENSD VEN Rising 1.1 1.5 2.0 V Thermal Shutdown OTP -- 160 -- °C Thermal Shutdown Hysteresis OTPHYSTERSIS -- 35 -- °C Note 1: Specifications are production tested at TA=25°C. Specifications over the -40°C to 85°C operat ing temperature range are assured by design, characterization and correlation with Statistical Quality Controls (SQC). Note 2: It is recommended to use duty ratio above 10% for minimizing resultant duty cycle jitter. Note 3: It is recommended to connect a soft start capacitor to soft start pin. Leave the soft start pin open may cause large inrush current and output overshooting |
Podobny numer części - TS3552 |
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Podobny opis - TS3552 |
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