Denon RCD-N9

NR111E (SMPS : IC95)
NR111E Pin Discriptions
NR111E Block Diagram
Light Load High Efficiency, 31V, Buck Regulator
NR110E series
SANKEN ELECTRIC CO., LTD.
Oct/23/2012
Rev.1.0
6
http://www.sanken-ele.co.jp
Pin Assignments & Functions
Pin Assignments
Pin Functions
noitpircseD lobmyS .oN niP
1 BS
High-side Boost input.
BS supplies the drive for High-side Nch-MOSFET switch.
Connect a capacitor and a resistor between SW to BS.
2 IN
Power input. IN supplies the power to the IC as well as the regulator switches
3
SW
Power switching output.
SW supplies power 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
switch
4 GND
Ground
Connect the exposed pad to Pin No.4
5 FB
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
divider R4
and R6.
6 ISET
Adjust Pin of OCP starting current
OCP starting current can be adjusted by connecting a resistor to ISET Pin.
In the case of using at Maximum Io, ISET Pin is required to connect to GND.
7 EN
Enable input.
Drive EN Pin high to turn on the regulator, low to turn it off.
8 SS
Soft-Start control input.
To set the soft-start period, connect to a capacitor between GND.
Light Load High Efficiency, 31V, Buck Regulator
NR110E series
SANKEN ELECTRIC CO., LTD.
Oct/23/2012
Rev.1.0
6
http://www.sanken-ele.co.jp
Pin Assignments & Functions
Pin Assignments
Pin Functions
noitpircseD lobmyS .oN niP
1 BS
High-side Boost input.
BS supplies the drive for High-side Nch-MOSFET switch.
Connect a capacitor and a resistor between SW to BS.
2 IN
Power input. IN supplies the power to the IC as well as the regulator switches
3 SW
Power switching output.
SW supplies power 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 Hig
h-side
switch
4 GND
Ground
Connect the exposed pad to Pin No.4
5 FB
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 v
oltage
divider R4 and R6.
6 ISET
Adjust Pin of OCP starting current
OCP starting current can be adjusted by connecting a resistor to ISET Pin.
In the case of using at Maximum Io, ISET Pin is required to connect to GND.
7 EN
Enable input.
Drive EN Pin high to turn on the regulator, low to turn it off.
8 SS
Soft-Start control input.
To set the soft-start period, connect to a capacitor between GND.
Light Load High Efficiency, 31V, Buck Regulator
NR110E series
SANKEN ELECTRIC CO., LTD.
Oct/23/2012
Rev.1.0
6
http://www.sanken-ele.co.jp
Pin Assignments & Functions
Pin Assignments
Pin Functions
noitpircseD lobmyS .oN niP
1 BS
High-side Boost input.
BS supplies the drive for High-side Nch-MOSFET switch.
Connect a capacitor and a resistor between SW to BS.
2 IN
Power input. IN supplies the power to the IC as well as the regulator switches
3
SW
Power switching output.
SW supplies power 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
switch
4 GND
Ground
Connect the exposed pad to Pin No.4
5 FB
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
divider R4
and R6.
6 ISET
Adjust Pin of OCP starting current
OCP starting current can be adjusted by connecting a resistor to ISET Pin.
In the case of using at Maximum Io, ISET Pin is required to connect to GND.
7 EN
Enable input.
Drive EN Pin high to turn on the regulator, low to turn it off.
8 SS
Soft-Start control input.
To set the soft-start period, connect to a capacitor between GND.
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