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VCTA25201B-R33MS6 数据表(PDF) 8 Page - Richtek Technology Corporation

部件名 VCTA25201B-R33MS6
功能描述  2.1MHz, 20A Multi-Phase Step-Down Converter with I2C Interface
PDF  50 Pages
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制造商  RICHTEK [Richtek Technology Corporation]
网页  http://www.richtek.com
标志 RICHTEK - Richtek Technology Corporation

VCTA25201B-R33MS6 数据表(HTML) 8 Page - Richtek Technology Corporation

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RTQ2134-QA
Copyright © 2022 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
DSQ2134-QA-02
May
2022
8
VOUT of
Buckx
EN
VIN
VIN = 5V
VUVLO
Digital/I
2
C work
VIO
VIO = 1.8V
TSS
Register
Setting
70
μs
EN Delay Time
(Factory Setting)
230
μs
Boot
Time
Figure 3. Start-up Sequence
VOUT of
Buckx
EN
VIN
VIN = 5V
VUVLO
SW EN
VIO
VIO = 1.8V
TSS
Register
Setting
70
μs
EN Delay Time
(Factory Setting)
230
μs
Boot
Time
Figure 4. Start-up Sequence by Software
VOUT of
Buck
EN
VIN
VIN = 5V
VIO
VIO = 1.8V
Disable Delay Time
(Factory Setting)
Figure 5. Power-off Sequence
VOUT of
Buckx
SW EN
VIN
VIN = 5V
Discharge
resistor off
Discharge
resistor on
VIO
VIO = 1.8V
EN
Figure 6. Power-off Sequence by Software
Power Good Indication
The RTQ2134 provides a power good indication and
this function shows the status of output voltage. When
output voltage is between 110% and 90% of setting
voltage for each Buck, the PG indication bit goes high.
The relative registers are 0x14[7], 0x15[7] and 0x16[7].
Fault Detection and Interrupt Pin
The RTQ2134 alerts the host when a warning, like Boot
and Hot Die, or fault events, like over-voltage,
under-voltage and over-temperature conditions have
occurred. Registers 0x13, 0x14, 0x15 and 0x16 can
help host to know if the fault or waning event happens.
These bits relative to events can be read and cleared.
Moreover, the RTQ2134 provides an interrupt pin with
the push-pull output capability and this pin shows these
events by using active low. When INT function is used,
set 0x33[6] = 1, 0x34[6] = 1 and 0x35[6] = 1. The pull
high output voltage of INT pin will be VIO voltage.
Register 0x32, 0x33, 0x34 and 0x35 can also set the
mask function to mask or pass the event flag output to
external interrupt pin. The overall detection function is
shown in Figure 7.
.



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