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RT6203B Datasheet(PDF) 16 Page - Richtek Technology Corporation

Part No. RT6203B
Description  5A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter with VID Control
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Maker  RICHTEK [Richtek Technology Corporation]
Homepage  http://www.richtek.com
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 16 page
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RT6203B
16
DS6203B-01 July 2017
www.richtek.com
©
Copyright 2017 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Table 4 shows special codes and relative function. Special
codes are valid during the soft-start time.
1111111 : The VOUT is controlled by I2C codes. If users
want VOUT to be controlled by external resistor divider, it
can be done by sending the special code.
1110000 to 1110010 : To change the over current limit level.
1110011 to 1110101 : To change the over temperature
protection level.
Special Codes
Function
1111111
Disable VID, return to FB control
1110000
OC = 7A (default)
1110001
OC = 5A
1110010
OC = 3A
1110011
OT = 150°C (default)
1110100
OT = 130°C
1110101
OT = 110°C
1110110
Shutdown code
1110111
Start-up code
1111000
PGOOD fault delay set to 0
s
1111001
PGOOD fault delay set to 10
s (default)
1111010
PGOOD fault delay set to 20
s
1111011
PGOOD fault delay set to 40
s
1100001
VOUT slew rate = 10mV/1s (default)
1100010
VOUT slew rate = 10mV/2s
1100011
VOUT slew rate = 10mV/3s
1100100
VOUT slew rate = 10mV/4s
1100101
VOUT slew rate = 10mV/5s
1100110
VOUT slew rate = 10mV/6s
1100111
VOUT slew rate = 10mV/7s
1101000
VOUT slew rate = 10mV/8s
Table 4. Special Function
1110110 to 1110111 : To shut down and start up IC.
1111000 to 1111011 : When VOUT is changed for a large
step, especially at light load conditions, it maybe need a
long setting time. It is easy to trig UV/OV function and
will cause the fault power good signal. Users can use the
special codes to set the PGOOD delay time to avoid
undesired behavior.
1100001 to 1101000 : To change the VOUT slew rate when
it is controlled from low level voltage to high level voltage.




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