Regulator IC. NJW4131 Datasheet

NJW4131 IC. Datasheet pdf. Equivalent

NJW4131 Datasheet
Recommendation NJW4131 Datasheet
Part NJW4131
Description Switching Regulator IC
Feature NJW4131; NJW4131 Switching Regulator IC for Boost Converter w/ 40V/1.4A or 40V/1A MOSFET GENERAL DESCRIPTIO.
Manufacture New Japan Radio
Datasheet
Download NJW4131 Datasheet




New Japan Radio NJW4131
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
40V max.
Wide Operating Voltage Range 4V to 35V
Switching Current
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
NJW4131R-B
(MSOP8 (VSP8))
PRODUCT CLASSFICATION
PART NUMBER VERSION
NJW4131GM1-A
NJW4131R-B
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-



New Japan Radio NJW4131
NJW4131
PIN CONFIGURATION
18
27
36
45
Exposed PAD on
backside connect to GND
NJW4131GM1-A
18
27
36
45
NJW4131R-B
BLOCK DIAGRAM
V+
PIN FUNCTION
1. SW
2. ON/OFF
3. V+
4. RT
5. IN-
6. FB
7. AGND
8. PGND
ON/OFF
High: ON
Low : OFF
(Standby)
400k
FB
IN-
Regulator
Standby
ON/OFF
ERAMP
UVLO
TSD
Low Frequency
Control
OSC
PWM
Buffer
Vref
1.0V
Soft Start
OCP
Pulse by Pulse
SW
RT
AGND
PGND
-2-
Ver.2012-08-03



New Japan Radio NJW4131
NJW4131
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
Supply Voltage
SW pin Voltage
IN- pin Voltage
ON/OFF pin Voltage
Power Dissipation
SYMBOL
V+
VSW
VIN-
VON/OFF
PD
MAXIMUM RATINGS
+40
+40
-0.3 to +6
+40
HSOP8
790 (*1)
2,500 (*2)
MSOP8(VSP8) 595 (*1)
805 (*2)
UNIT
V
V
V
V
mW
Junction Temperature Range
Operating Temperature Range
Storage Temperature Range
Tj
Topr
Tstg
-40 to +150
-40 to +85
-40 to +150
°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
Supply Voltage
SYMBOL
V+
MIN.
4.0
Timing Resistance
Oscillating Frequency
RT 18
fosc 300
TYP.
27
700
MAX.
35
68
1,000
UNIT
V
k
kHz
Ver.2012-08-03
-3-







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