NJW4131
Switching Regulator IC for Boost Converter
w/ 40V/1.4A or 40V/1A MOSFET
GENERAL DESCRIPTION
The
NJW4131
is a boost converter with
40V/1.4A
or
40V/1A
MOSFET. It corresponds to high oscillating frequency, and Low ESR
Output Capacitor (MLCC) within wide input range from 4.0V to 35V.
Therefore, the
NJW4131
can realize downsizing of an application
with a few external parts.
Also, it has a soft start function, an over current protection and a
thermal shutdown circuit.
It is suitable for power supply to a Car Accessory, Office Automation
equipment, Industrial Instrument, LED and so on.
■
PACKAGE OUTLINE
NJW4131GM1-A
(HSOP8)
FEATURES
Output Switch Voltage
Wide Operating Voltage Range
Switching Current
NJW4131R-B
(MSOP8 (VSP8))
40V max.
4V to 35V
1.4A (min.) @ A version
1.0A (min.) @ B version
PWM Control
Wide Oscillation Frequency
300kHz to 1MHz
Soft-Start Function
4ms typ.
UVLO (Under Voltage Lockout)
Over Current Protection / Thermal Shutdown Protection
Standby Function
Package Outline
NJW4131GM1:
HSOP8
NJW4131R:
MSOP8(VSP8)*
*MEET JEDEC MO-187-DA
PRODUCT CLASSFICATION
PART NUMBER
NJW4131GM1-A
NJW4131R-B
VERSION
A
B
SWITCHING
CURRENT LIMIT
(MIN.)
1.4A
1.0A
PACKAGE
HSOP8
MSOP8(VSP8)
OPERATING
TEMPERATURE
RANGE
-40°C to +85°C
-40°C to +85°C
Ver.2012-08-03
-1-
NJW4131
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Supply Voltage
V
+
SW pin Voltage
V
SW
IN- pin Voltage
V
IN-
ON/OFF pin Voltage
V
ON/OFF
Power Dissipation
Junction Temperature Range
Operating Temperature Range
Storage Temperature Range
P
D
T
j
T
opr
T
stg
(Ta=25°C)
UNIT
V
V
V
V
mW
MSOP8(VSP8) 595 (*1)
805 (*2)
-40 to +150
-40 to +85
-40 to +150
MAXIMUM RATINGS
+40
+40
-0.3 to +6
+40
HSOP8
790 (*1)
2,500 (*2)
°C
°C
°C
(*1): Mounted on glass epoxy board. (76.2×114.3×1.6mm:EIA/JDEC standard size, 2Layers)
(*2): Mounted on glass epoxy board. (76.2×114.3×1.6mm:EIA/JDEC standard size, 4Layers),
internal foil area: 74.2×74.2mm
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
MIN.
+
Supply Voltage
V
4.0
Timing Resistance
R
T
18
Oscillating Frequency
fosc
300
TYP.
–
27
700
MAX.
35
68
1,000
UNIT
V
kΩ
kHz
Ver.2012-08-03
-3-
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