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PDF NR131A Data sheet ( Hoja de datos )
| Número de pieza | NR131A | |
| Descripción | Ultra light load high efficiency Buck Regulator IC | |
| Fabricantes | SANKEN | |
| Logotipo |  |
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Ultra light load high efficiency,VIN=17V,Current mode Step-down Io=3A Buck Regulator IC
NR130A series
Tentative
Sep/10/2013
General Descriptions
The NR130A series 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 NR130A series is available in an 8-pin
eSOIC package with an exposed thermal pad on the back
side.
Package
eSOIC8(HSOP8)
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/OF the regulator function
Programable Pulse-Skip operation
Electrical Characteristics
3A Continuous output current
Operating input range VIN = 4.5V～17V
Output adjustable VO = 0.8V～14V
Fixed 350kHz frequency
Applications
LCD TV / Blu-Ray / Set top box
Green Electronic products
Other power supply
Typical Application Circuit
NR131A
For NR131A
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.1.1
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp
1
http://www.Datasheet4U.com
1 page  
Ultra light load high efficiency,VIN=17V,Current mode Step-down Io=3A Buck Regulator IC
NR130A series
Tentative
Sep/10/2013
Typical Performance Characteristics
NR131A typical Performance Characteristics
(1)Efficiency
Condition: VO=3.3V
100
90
80
70
60
50
0.001
Vin=6V
Vin=12V
Vin=8V
Vin=14V
0.01
0.1
Output Current IO [A]
1
Vin=10V
Vin=16V
10
100
90
80
70
60
50
0.001
Condition:VO=5.0V
Vin=6V
Vin=12V
Vin=8V
Vin=14V
0.01
0.1
Output Current IO [A]
1
Vin=10V
Vin=16V
10
Rev.1.1
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp
5
5 Page 
Ultra light load high efficiency,VIN=17V,Current mode Step-down Io=3A Buck Regulator IC
NR130A series
Tentative
Sep/10/2013
Allowable package power dissipation
TBD
Allowable package powe disspation of NR130A series
NOTES:
1) Glass-epoxy board mounting in a 30×30mm
2) copper area : 25×25mm
3) The power dissipation is calculated at the junction temperature 125 °C
4) Losses can be calculated by the following equation.
As the efficiency is subject to the input voltage and output current, it shall be obtained from the efficiency curve and
substituted in percent
5) Thermal design for D1 shall be made separately.
PD
VO
IO
100
x
1
･･･(1)
VO: Output voltage
VIN : Input voltage
IO : Output current
ηx : Efficiency (%)
Vf: SJPB-L4 Io=3A/Vf=0.55V
Diode forward voltage (A to K)
Rev.1.1
SANKEN ELECTRIC CO., LTD.
http://www.sanken-ele.co.jp
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet NR131A.PDF ] | |
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