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STW4510 Datasheet(PDF) 2 Page - STMicroelectronics

Part # STW4510
Description  2 step-down DC/DC converters / 5 LDO power management
Download  57 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STW4510 Datasheet(HTML) 2 Page - STMicroelectronics

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Contents
STw4510
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Contents
1
Functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2
Ball information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1
Ball connections in TFBGA84 6 mm x 6 mm package . . . . . . . . . . . . . . . . 7
2.2
Ball connections in TFBGA49 4 mm x 4 mm package . . . . . . . . . . . . . . . . 7
2.3
Ball functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.3.1
Signal description for the TFBGA84 6 mm x 6 mm package . . . . . . . . . . 8
2.3.2
Signal description for the TFBGA49 4 mm x 4 mm package . . . . . . . . . 10
3
Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2
Digital control module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.1
State machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.2
POWER OFF / VddOK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.2.3
Sleep mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2.4
Vsdc1_OFF mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2.5
Power supplies at start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2.6
Device reset by processor Sw_resetn . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.7
I2C interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.2.8
Control registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2.9
IT generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3
Power management module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.3.1
Power supply domains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.3.2
Vsdc1 step-down DC/DC converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.3.3
Vsdc2 step down DC/DC converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.3.4
Vana1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.3.5
Vana2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.3.6
Vana3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.3.7
Vdig . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.3.8
Vmmc power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.3.9
Power supply monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
3.3.10
Thermal shut-down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4
Electrical and timing characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . 35


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