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NR131S PDF даташит

Спецификация NR131S изготовлена ​​​​«SANKEN» и имеет функцию, называемую «Buck Regulator IC».

Детали детали

Номер произв NR131S
Описание Buck Regulator IC
Производители SANKEN
логотип SANKEN логотип 

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NR131S Даташит, Описание, Даташиты
Ultra light load high efficiency,VIN=17V,Current mode Step-down Io=3A Buck Regulator IC
NR131S
Jul./09/2015
General Descriptions
The NR131S is buck regulator ICs integrates High-side
power MOSFETs. With the current mode control, ultra
low ESR capacitors such as ceramic capacitors can be
used. The ICs can realize super-high efficiency by
performing pulse skip operation at light load condition.
The ICs have protection functions such as Over-Current
Protection (OCP), Under-Voltage Lockout (UVLO) and
Thermal Shutdown (TSD). Soft starting time can be set
up by selecting an external capacitor value. The ON/OFF
pin (EN Pin) turns the regulator on or off and helps to
achieve low power consumption requirements. The
NR131S is available in an 8-pin SOIC package.
Package
SOIC8
Features & Benefits
Current mode PWM control
Up to 94% efficiency at normal load condition
Up to 85% efficiency at light load condition
Stable with low ESR ceramic output capacitors
Built-in protection function
Over Current Protection (OCP)
Thermal Shutdown (TSD)
Under Voltage Lockout (UVLO)
Built-in phase compensation
Adjustable Soft-Start with an external capacitor
Turn ON/OFF the regulator function
Programable Pulse-Skip operation
Electrical Characteristics
3A Continuous output current
Operating input range VIN = 4.5V17V
Output adjustable VO = 0.8V14V
Fixed 350kHz frequency
Applications
LCD TV / Blue-ray / Set top box
Green electronic products
Other power supply
Typical Application Circuit
NR131S
C1, C2: 10μF / 25V, C4, C5: 22μF / 16V, C7: 0.1μF, C9:1800pF, C11: 220pF(Option), R1: 510kΩ , R3: 10Ω, R4: 36 kΩ, R5: 27kΩ
(VO=5.0V), R6: 12kΩ, R7:510kΩ(Option), D1: SJPJ-L4, L1: 10μH
Rev.2.0
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp
1









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NR131S Даташит, Описание, Даташиты
Ultra light load high efficiency,VIN=17V,Current mode Step-down Io=3A Buck Regulator IC
NR131S
Jul./09/2015
Series Lineup
Product
Name
fSW
VIN
VO
IO
Pin No.1
Function
Pin No.2
Function
NR131S
350kHz
4.5V to (1)
17V
0.8V to
14V
(2) 3A
NC
IN
(1) The minimum input voltage shall be either of 4.5V or VO+3V, whichever is higher.
(2) The I/O condition limited by the Minimum on-time (TON(MIN)).
Package
SOIC8
Absolute Maximum Ratings
Parameter
DC input voltage
BS terminal voltage
BS-SW Pin voltage
SW terminal voltage
FB terminal voltage
EN terminal voltage
SS terminal voltage
Symbol
VIN
VBS
VBS-SW
VSW
VFB
VEN
VSS
Ratings
0.319
0.325
-0.36.0
0.37.5
219
4.519
0.35.5
0.319
0.37.4
Units
V
V
V
V
V
V
V
Conditions
DC
Pulse width 30ns
DC
Pulse width 30ns
SS terminal allowable input current
Issb 5
Power dissipation
(3) PD1
1.42
Junction temperature
(4) TJ 40 ~ 150
Storage temperature
Thermal resistance
(junction- Pin No. 4)
TS 40 ~ 150
θJP 60.8
Thermal resistance
(junction-ambient air)
θJA 88.2
(3) Limited by thermal shutdown.
(4) The temperature detection of thermal shutdown is about 165°C
mA
W
°C
°C
°C /W
°C /W
Glass-epoxy board mounting
in a 40×40mm.
(copper area in a 25×25mm)
Max TJ =150°C
Glass-epoxy board mounting
in a 40×40mm.
(copper area in a 25×25mm)
Recommended Operating Conditions
Parameter
Symbol
DC input voltage
DC output current
(5) VIN
(6)
(7) IO
Ratings
MIN
MAX
Vo+3
17
0 3.0
Units
V
A
Conditions
Output voltage
VO 0.8
14 V
Ambient operating temperature
(7) TOP
40
85 °C
(5) The minimum value of input voltage is taken as the larger one of either 4.5V or VO +3V.
In the case of VIN=VO +1VO +3V , it is set to IO = Max. 2A
(6) Recommended circuit refers to Typical Application Circuit.
(7) To be used within the allowable package power dissipation characteristics.
Rev.2.0
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp
2









No Preview Available !

NR131S Даташит, Описание, Даташиты
Ultra light load high efficiency,VIN=17V,Current mode Step-down Io=3A Buck Regulator IC
NR131S
Jul./09/2015
Electrical Characteristics
Parameter
Reference voltage
Output voltage temperature
coefficient
Switching frequency
Symbol
VREF
VREF/T
MIN
0.780
fSW 245
Line regulation
(8) VLine
Load regulation
(8)
Over current protection
threshold
Supply Current(Non-switching)
Shutdown Supply Current
Input Under Voltage Lockout
threshold
SS Pin Charging current
Sink current
EN Pin
Threshold voltage
Max on-duty
(8)
Minimum on-time
(8)
Thermal shutdown threshold
temperature
(8)
Thermal shutdown restart
(8)
hysteresis of temperature
(8) Guaranteed by design,not tested.
VLoad
IS
IIN
IIN(off)
Vuvlo
ISS
IEN
VEN
DMAX
TON(MIN)
TSD
TSD_hys
3.1
13
0.7
151
Ratings
TYP
0.800
±0.05
350
10
70
4.5
100
1
3.9
22
5
1.3
90
170
165
MAX
0.820
455
4.4
31
10
2.1
Ta = 25°C
Units
Test conditions
V VIN = 12VIo = 1.0A
mV/°C
VIN = 12V, Io = 1.0A
40°C to +85°C
kHz
VIN=12V, Vo=5.0V,
Io=1A
mV VIN = 8V17V,
Vo = 5.0V, Io = 1A
mV
VIN = 12V, Vo = 5.0V,
Io = 0.1A2.0A
A VIN = 12V, Vo = 5.0V
μA VIN= 12V, VEN=12V
μA VIN=12V, VEN=0V
V VIN Rising
μA VSS=0V, VIN=12V
μA VEN= 12V
V VIN=12V
% VIN=12V
nsec VIN=12V
°C VIN=12V
15 °C VIN=12V
Rev.2.0
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp
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Номер в каталогеОписаниеПроизводители
NR131AUltra light load high efficiency Buck Regulator ICSANKEN
SANKEN
NR131SBuck Regulator ICSANKEN
SANKEN

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