Denon RCD-N9 Service Manual page 80

Pin Assignments & Functions
Pin Assignments & Functions
NR111E (SMPS : IC95)
Pin Functions
NR111E Pin Discriptions
Pin Functions
P n i N . o S y m
P n i N . o S y m b l o
1 BS
1 BS
2 IN
2 IN
3 SW
3 SW
4 GND
4 GND
5 FB
5 FB
6 ISET
Light Load High Efficiency, 31V, Buck Regulator 6 ISET
NR110E series
7 EN
7 EN
8 SS
8 SS
NR111E Block Diagram
Rev.1.0
Pin Assignments & Functions
Pin Functions
Pin Assignments
b l o
High-side Boost input.
High-side Boost input.
BS supplies the drive for High-side Nch-MOSFET switch.
BS supplies the drive for High-side Nch-MOSFET switch.
Connect a capacitor and a resistor between SW to BS.
Connect a capacitor and a resistor between SW to BS.
Power input. IN supplies the power to the IC as well as the regulator switches
Power input. IN supplies the power to the IC as well as the regulator switches
Power switching output.
Power switching output.
SW supplies power to the output.
SW supplies power to the output.
Connect the LC filter from SW to the output.
Connect the LC filter from SW to the output.
Note that a capacitor is required from SW to BS to supply the power the High-side
Note that a capacitor is required from SW to BS to supply the power the High-side
switch
switch
Ground
Ground
Connect the exposed pad to Pin No.4
Connect the exposed pad to Pin No.4
Feedback input Pin to compare Reference Voltage. The feedback threshold is 0.8V.
Feedback input Pin to compare Reference Voltage. The feedback threshold is 0.8V.
To set the output voltage, FB Pin is required to connect between resistive voltage
To set the output voltage, FB Pin is required to connect between resistive voltage
divider R4 and R6.
divider R4 and R6.
Adjust Pin of OCP starting current
Adjust Pin of OCP starting current
starting current can be adjusted by connecting a resistor to ISET Pin.
OCP
starting current can be adjusted by connecting a resistor to ISET Pin.
OCP
In the case of using at Maximum Io, ISET Pin is required to connect to GND.
In the case of using at Maximum Io, ISET Pin is required to connect to GND.
Enable input.
Enable input.
Drive EN Pin high to turn on the regulator, low to turn it off.
Drive EN Pin high to turn on the regulator, low to turn it off.
Soft-Start control input.
Soft-Start control input.
To set the soft-start period, connect to a capacitor between GND.
To set the soft-start period, connect to a capacitor between GND.
SANKEN ELECTRIC CO., LTD.
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp
http://www.sanken-ele.co.jp
Pin Assignments
D s e i r c
D s e i r c t p o i
80
Pin Assignments
t p o i n
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Oct/23/2012
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