DS6203B Datasheet, PDF (16/22 Pages) Richtek Technology Corporation – 5A, 18V, 700kHz ACOTTM Synchronous Step-Down Converter with VID Control

RT6203B
Table 4 shows special codes and relative function. Special
codes are valid during the soft-start time.
1111111 : The V_OUT is controlled by I2C codes. If users
want V_OUT 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.
1110110 to 1110111 : To shut down and start up IC.
1111000 to 1111011 : When V_OUT 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 V_OUT slew rate when
it is controlled from low level voltage to high level voltage.
Special Codes
1111111
1110000
1110001
1110010
1110011
1110100
1110101
1110110
1110111
1111000
1111001
1111010
1111011
1100001
1100010
1100011
1100100
1100101
1100110
1100111
1101000
Table 4. Special Function
Function
Disable VID, return to FB control
OC = 7A (default)
OC = 5A
OC = 3A
OT = 150°C (default)
OT = 130°C
OT = 110°C
Shutdown code
Start-up code
PGOOD fault delay set to 0s
PGOOD fault delay set to 10s (default)
PGOOD fault delay set to 20s
PGOOD fault delay set to 40s
VOUT slew rate = 10mV/1s (default)
VOUT slew rate = 10mV/2s
VOUT slew rate = 10mV/3s
VOUT slew rate = 10mV/4s
VOUT slew rate = 10mV/5s
VOUT slew rate = 10mV/6s
VOUT slew rate = 10mV/7s
VOUT slew rate = 10mV/8s
Copyright ©2016 Richtek Technology Corporation. All rights reserved.
www.richtek.com
16
is a registered trademark of Richtek Technology Corporation.
DS6203B-00 September 2016