Buck Converter. NR110K Datasheet

NR110K Converter. Datasheet pdf. Equivalent

NR110K Datasheet
Recommendation NR110K Datasheet
Part NR110K
Description Buck Converter
Feature NR110K; 4 A, 31 V, 350 kHz, Buck Converter NR110K Data Sheet Description The NR110K is buck converter ICs .
Manufacture SANKEN
Datasheet
Download NR110K Datasheet





SANKEN NR110K
4 A, 31 V, 350 kHz, Buck Converter
NR110K
Data Sheet
Description
The NR110K is buck converter ICs that integrate the
power MOSFET. With the current mode control, ultra
low ESR capacitors such as ceramic capacitors can be
used. The ICs have protection functions such as
Overcurrent Protection (OCP), Under-Voltage Lockout
(UVLO) and Thermal Shutdown (TSD). An adjustable
Soft-Start by an external capacitor prevents the excessive
inrush current in startup. The feature increasing efficiency
at light loads allows the device to be used in the energy-
saving applications. The ICs integrate phase
compensation circuit which reduces the number of
external components and simplifies the design of
customer application. The IC has the EN pin that turns the
regulator on or off, and achieves low power consumption
requirements. The package of NR117K is the HSOP8
with an exposed thermal pad on the back side.
Features
Up to 90% Efficiency
(VIN = 12 V, VO = 5 V, IO = 1 A)
Up to 70% Efficiency at Maximum at Ligh Load
(VIN = 12 V, VO = 5 V, IO = 30 mA)
Current mode PWM control
Stable with Low ESR Ceramic Output Capacitors
No External Components Required by Incorporating
Phase Compensation
Soft-Start Function
Adjustable Soft-Start time with an External Capacitor
External ON/OFF Function
Protection Functions:
Overcurrent Protection (OCP): Drooping, auto-restart
Thermal Shutdown (TSD): Auto-restart
Under Voltage Lockout (UVLO)
Typical Application
Package
HSOP8
1
8
2
7
3
6
4
5
Specification
Input Voltage, VIN = 8 V to 31 V
Output Voltage, VO = 0.8 V to 24 V
Maximum Output Current, IO = 4 A
Operation Frequency 350 kHz
Application
AV Equipment
Auxiliary Power Supply
Not to scale
NR110K-DSE Rev.2.1
SANKEN ELCTRIC CO.,LTD.
1
Oct. 30, 2020
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2012



SANKEN NR110K
NR110K
Contents
Description ------------------------------------------------------------------------------------------------------ 1
Contents --------------------------------------------------------------------------------------------------------- 2
1. Absolute Maximum Ratings----------------------------------------------------------------------------- 3
2. Recommended Operating Conditions ----------------------------------------------------------------- 3
3. Electrical Characteristics -------------------------------------------------------------------------------- 4
4. Typical Performance Characteristics ----------------------------------------------------------------- 5
5. Block Diagram --------------------------------------------------------------------------------------------- 7
6. Pin Configuration Definitions--------------------------------------------------------------------------- 7
7. Typical Application --------------------------------------------------------------------------------------- 8
8. Physical Dimensions -------------------------------------------------------------------------------------- 8
9. Marking Diagram ----------------------------------------------------------------------------------------- 9
Important Notes---------------------------------------------------------------------------------------------- 10
NR110K-DSE Rev.2.1
SANKEN ELCTRIC CO.,LTD.
2
Oct. 30, 2020
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2012



SANKEN NR110K
NR110K
1. Absolute Maximum Ratings
Unless otherwise specified, TA = 25 °C.
Parameter
Symbol
DC Input Voltage
VIN
BS Pin Voltage
VBS
BSSW Voltage
VBS-SW
SW Pin Voltage
VSW
FB Pin Voltage
VFB
EN Pin Voltage
VEN
SS Pin Voltage
VSS
Power Dissipation (1)
PD
Junction Temperature (2)
TJ
Storage Temperature
TS
Thermal Resistance
(junctionGND Pin)
θJP
Thermal Resistance
(junctionambient air)
θJA
Conditions
DC
Pulse width 30ns
The IC is mounted on the
glass-epoxy board (30 ×
30mm) with copper area
25 × 25mm)
TJ Max = 150 °C
The IC is mounted on the
glass-epoxy board (30 ×
30mm) with copper area
(25 × 25 mm)
Rating
35
44
8
12
35
5.5
35
5.5
1.69
40 to 150
40 to 150
40
74
Unit
V
V
V
V
V
V
V
W
°C
°C
°C /W
°C /W
Remarks
2. Recommended Operating Conditions
Parameter
DC Input Voltage (1)
DC Output Current (2)(3)
Output Voltage
Ambient Operating
Temperature (3)
Symbol
VIN
IO
VO
TOP
Ratings
Min.
Max.
8
31
0
4.0
0.8
24
40
85
Units
V
A
V
°C
(1) Limited by thermal shutdown.
(2) The temperature detection of thermal shutdown is about 160 °C.
(1) The minimum value of input voltage is taken as the larger one of either 8 V or VO +3 V.
When IO < 1 A, VIN = VO + 1.
Input voltage is limited by the maximum ON duty. VIN > VO / 0.9 (typ.)
(2) See Typical Application Circuit for recommended circuit.
(3) To be used within the allowable package power dissipation characteristics.
Conditions
NR110K-DSE Rev.2.1
SANKEN ELCTRIC CO.,LTD.
3
Oct. 30, 2020
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2012





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