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TS3300ITQ1633TP 数据表(PDF) 10 Page - Touchstone Semiconductor Inc |
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TS3300ITQ1633TP 数据表(HTML) 10 Page - Touchstone Semiconductor Inc |
10 / 14 page TS3300 Page 10 TS3300DS r1p0 RTFDS BLOCK DIAGRAM THEORY OF OPERATION The TS3300 is a power management product that combines a high-efficiency boost regulator and a linear regulator into one package. It is the industry’s 1 st boost regulator + linear regulator where the boost regulator can operate from supply voltages as low as 0.6V and can deliver at least 75mA at 1.2VBI and 3VBO. Under no-load conditions, the boost regulator idles at 3.5µA. The internal, low-dropout linear regulator is driven by the output of the boost regulator. It can deliver up to 100mA output current at a dropout voltage of 255mV and reduce the ripple voltage out of the boost regulator by a factor of 3. BOOST REGULATOR At start-up, an internal low voltage oscillator in the start-up control circuitry drives the gate of the internal FET to charge the load capacitor. Once the output voltage reaches approximately 1.1V, the main control circuitry starts to operate. With an adjustable peak inductor current, the TS3300 can provide up to 84% efficiency with a 1.2VBI and 3VBO. Refer to Figure 1. The input and output supply voltage range for the boost regulator is from 0.6V to 4.5V and 1.8V to 5.25V, respectively. Figure 1: 1.2V Input to 3V Boost Regulator Output Voltage and to 1.8V LDO Output Voltage Circuit boost regulator by a factor of 3. |
类似零件编号 - TS3300ITQ1633TP |
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类似说明 - TS3300ITQ1633TP |
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