NJW4132
Switching Regulator IC for Boost Converter
Current Mode Control w/ 45V/1.75A MOSFET
GENERAL DESCRIPTION
The
NJW4132
is a boost converter with 45V/1.75A MOSFET. It
corresponds to high oscillating frequency, and Low ESR Output
Capacitor (MLCC) within wide input range from 4.5V to 40V.
Therefore, the
NJW4132
can realize downsizing of applications
with a few external parts so that adopts current mode control.
Also, it has a soft start function, external clock synchronization,
over current protection and thermal shutdown circuit.
It is suitable for boost application to a Car Accessory, Office
Automation Equipment, Industrial Instrument and so on.
■
PACKAGE OUTLINE
NJW4132U2
FEATURES
Current Mode Control
External Clock Synchronization
Wide Operating Voltage Range
4.5V to 40V
Switching Current
1.75A min.
PWM Control
Built-in Compensation Circuit
Correspond to Ceramic Capacitor (MLCC)
Oscillating Frequency
300kHz typ. (A ver.)
700kHz typ. (B ver.)
2.0MHz typ. (C ver.)
Soft Start Function
10ms typ.
UVLO (Under Voltage Lockout)
Over Current Protection (Hiccup type)
Thermal Shutdown Protection
Standby Function
Package Outline
NJW4132U2
: SOT-89-5-2
PRODUCT CLASSIFICATION
Part Number
NJW4132U2-A
NJW4132U2-B
NJW4132U2-C
Version
A
B
C
Oscillation
Frequency
300kHz typ.
700kHz typ.
2.0MHz typ.
Package
SOT-89-5-2
SOT-89-5-2
SOT-89-5-2
Operating
Temperature
Range
General Spec.
-40 C to +85 C
General Spec.
-40 C to +85 C
General Spec.
-40 C to +85 C
Ver.2017-01-25
-1-
NJW4132
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Supply Voltage
V
+
SW pin Voltage
V
SW
IN- pin Voltage
V
IN-
EN/SYNC pin Voltage
V
EN/SYNC
Power Dissipation
Junction Temperature Range
Operating Temperature Range
Storage Temperature Range
P
D
Tj
T
opr
T
stg
MAXIMUM RATINGS
+45
+45
-0.3 to +6
+45
SOT-89-5-2
625 (*1)
2,400 (*2)
-40 to +150
-40 to +85
-40 to +150
(Ta=25°C)
UNIT
V
V
V
V
mW
C
C
C
(*1): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JEDEC standard, 2Layers)
(*2): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JEDEC standard, 4Layers)
(For 4Layers: Applying 74.2×74.2mm inner Cu area and a thermal via hole to a board based on JEDEC standard JESD51-5)
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
Supply Voltage
V
+
External Clock Input Range
A version
f
SYNC
B version
C version
MIN.
4.5
290
690
1,800
TYP.
–
–
–
–
MAX.
40
500
1,000
2,400
UNIT
V
kHz
Ver.2017-01-25
-3-
NJW4132
ELECTRICAL CHARACTERISTICS
PARAMETER
Under Voltage Lockout Block
ON Threshold Voltage
OFF Threshold Voltage
Hysteresis Voltage
Soft Start Block
Soft Start Time
Oscillator Block
Oscillation Frequency
Oscillation Frequency
OCP operates
Oscillation Frequency
deviation (Supply voltage)
Oscillation Frequency
deviation (Temperature)
Error Amplifier Block
Reference Voltage
Input Bias Current
PWM Comparate Block
Maximum Duty Cycle
Minimum ON Time1
(Use Built-in Oscillator)
Minimum ON Time2
(Use Ext CLK)
OCP Block
COOL DOWN Time
Output Block
Output ON Resistance
Switching Current Limit
SW Leak Current
M
AX
D
UTY
t
ON-min1
A version, B version, V
IN-
=0.9V
C version, V
IN-
=0.9V
A version
B version
C version
A version, f
SYNC
=400kHz
B version, f
SYNC
=800kHz
C version, f
SYNC
=2.2MHz
85
80
–
–
–
–
–
–
90
85
300
110
80
220
90
80
–
–
425
155
120
355
125
120
%
%
ns
ns
ns
ns
ns
ns
f
OSC
f
OSC_LIM
f
DV
f
DT
A version, V
IN-
=0.9V
B version, V
IN-
=0.9V
C version, V
IN-
=0.9V
A version, V
IN-
=0.4V
B version, V
IN-
=0.4V
C version, V
IN-
=0.4V
V
+
=4.5V to 40V
Ta=-40 C to +85 C
270
630
1.82
–
–
–
–
–
300
700
2.0
50
117
410
1
5
330
770
2.2
–
–
–
–
–
kHz
kHz
MHz
kHz
kHz
kHz
%
%
SYMBOL
(Unless otherwise noted, V
+
=V
EN./SYNC
=12V, Ta=25 C)
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
V
T_ON
V
T_OFF
V
HYS
V
+
= L
→
H
V
+
= H
→
L
4.2
4.1
70
4.35
4.25
100
4.5
4.4
–
V
V
mV
T
SS
V
B
=0.95V
5
10
15
ms
V
B
I
B
-1.0%
-0.1
1.0
–
+1.0%
0.1
V
A
t
ON-min2
t
COOL
–
42
–
ms
R
ON
I
LIM
I
LEAK
I
SW
=1A
V
EN/SYNC
=0V, V
SW
=45V
–
1.75
–
0.4
2.1
–
0.65
2.25
1
A
A
-4-
Ver.2017-01-25
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