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データシートサーチシステム |
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データシートサーチシステム |
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TS1935B データシート(PDF) 2 Page - Taiwan Semiconductor Company, Ltd |
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TS1935B データシート(HTML) 2 Page - Taiwan Semiconductor Company, Ltd |
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2 / 6 page  Preliminary TS1935B 1.9A / 1.2MHz Boost DC to Dc Converter 2/6 Version: Preliminary Electrical Specifications (Ta = 25 oC, V IN=5V, EN=VIN, IL=0A unless otherwise noted) Characteristics Symbol Conditions Min Typ Max Units Input Voltage range VCC 2.6 -- 5.5 V Under Voltage Lockout UVLO Rising -- 2.35 2.60 V UVLO Hysteresis -- -130 -- mV Step-Up Voltage Adjust Range VOUT 3 -- 27 V Operating quiescent current ICCQ IOUT= 0mA, VFB =1.5V -- 150 250 µA Shutdown current ISD VEN=0V -- 0.1 1 µA Feedback Voltage VFB 1.213 1.238 1.263 V FB Input Leakage Current IFB-LKG VFB = 1.3V -100 0.01 +100 nA Line Regulation VIN = 2.5 to 5.5V IOUT = 20mA -- 0.2 -- % Load Regulation VIN = 5V IOUT = 1mA to 400mA - 0.2 -- % Switching frequency FOSC 900 1200 1500 KHz Maximum Duty DMAX 82 87 - % N-channel MOSFET current limit ILIM Duty=50% -- 1.9 -- A MOSFET on-resistance (Note 1) RDS(on) VCC=3V, ISW=1A -- 650 - m VCC=5V, ISW=1A -- 500 -- SW Leakage Current ISWL VLX = 27V, VFB =1.5V -- -- 1 µA EN high-level input voltage VIH 1.0 -- -- V EN low-level input voltage VIL -- -- 0.4 V EN Hysteresis hys -- 200 - mV EN input leakage current IEN-LKG VEN=GND or VCC -- 0.01 0.1 µA Thermal Shutdown TDS -- 150 -- °C Thermal Shutdown Hysteresis TSH -- 35 -- Note 1: Guaranteed by design Pin Description Pin Number Pin Name Description 1 SW Power Switch Output. SW is the drain of the internal MOSFET switch. Connect the power inductor and output rectifier to SW. SW can swing between GND and 27V. 2 GND Ground. Tie directly to ground plan. 3 FB Feedback Input. FB voltage is 1.238V. Connect a resistor divider to FB. 4 EN Regulator On/Off Control Input. A high input at EN turns on the converter, and a low input turns it off. When not used, connect EN to the input source for automatic startup. The EN pin cannot be left floating. 5 VCC Input Supply Pin. Must be locally bypassed. |
同様の部品番号 - TS1935B |
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同様の説明 - TS1935B |
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