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STW41412/T Datasheet(PDF) 12 Page - STMicroelectronics

Part # STW41412/T
Description  Single-coil dual-output step-down DC/DC converter for digital base band and multimedia processor supply
PDF  31 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STW41412/T Datasheet(HTML) 12 Page - STMicroelectronics

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STw4141
Electrical characteristics
11/30
2.5
Soft start
To avoid spikes on battery during STw4141 start-up sequence, a smooth start-up is
implemented. Reference voltage grows up less than 600 µs until it achieves is final target.
Therefore, STw4141 start up is smooth and secure for the overall mobile phone.
Figure 2 illustrates a smooth start up sequence where VIN = 3.6V, VOUT1 = 1.8V@ 200mA,
VOUT2 =1.2V@400mA.
Figure 2.
Smooth start-up sequence
2.6
Settling time of VOUT2
Figure 3.
Settling time of VOUT2, IOUT1 = 200mA, IOUT2 = 400mA



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