Buck Converter. NR117K Datasheet

NR117K Converter. Datasheet pdf. Equivalent

NR117K Datasheet
Recommendation NR117K Datasheet
Part NR117K
Description Buck Converter
Feature NR117K; 1.5 A, 31 V, 30 kHz, Buck Converter NR117K Data Sheet Description The NR117K is buck converter ICs.
Manufacture SANKEN
Datasheet
Download NR117K Datasheet




SANKEN NR117K
1.5 A, 31 V, 30 kHz, Buck Converter
NR117K
Data Sheet
Description
The NR117K 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 87% Efficiency
(VIN = 12 V, VO = 5 V, IO = 0.3 A)
Up to 68% Efficiency at Maximum at Ligh Load
(VIN = 12 V, VO = 5 V, IO = 10 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
Frequency: 30 kHz (EMI considered)
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 = 1.5 A
Operation Frequency 30 kHz
Application
AV Equipment
Auxiliary Power Supply
Not to scale
NR117K-DSE Rev.2.2
SANKEN ELCTRIC CO.,LTD.
1
Oct. 30, 2020
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2016



SANKEN NR117K
NR117K
Contents
Description ------------------------------------------------------------------------------------------------------ 1
Contents --------------------------------------------------------------------------------------------------------- 2
1. Absolute Maximum Ratings----------------------------------------------------------------------------- 3
2. Recommended Operating Conditions ----------------------------------------------------------------- 3
3. Electrical Characteristics -------------------------------------------------------------------------------- 4
4. Typical Performance Characteristics ----------------------------------------------------------------- 4
5. Block Diagram --------------------------------------------------------------------------------------------- 6
6. Pin Configuration Definitions--------------------------------------------------------------------------- 6
7. Typical Application --------------------------------------------------------------------------------------- 7
8. Physical Dimensions -------------------------------------------------------------------------------------- 7
9. Marking Diagram ----------------------------------------------------------------------------------------- 8
Important Notes------------------------------------------------------------------------------------------------ 9
NR117K-DSE Rev.2.2
SANKEN ELCTRIC CO.,LTD.
2
Oct. 30, 2020
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2016



SANKEN NR117K
NR117K
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)
(1) Limited by thermal shutdown.
(2) The temperature detection of thermal shutdown is about 160 °C.
Rating
35
44
8
12
35
5.5
35
5.5
1.69
40 to 150
40 to 150
40
70
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
1.5
0.8
24
40
85
Units
V
A
V
°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
NR117K-DSE Rev.2.2
SANKEN ELCTRIC CO.,LTD.
3
Oct. 30, 2020
http://www.sanken-ele.co.jp/en
© SANKEN ELECTRIC CO., LTD. 2016





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