NJRC NJW4132

NJW4132
Switching Regulator IC for Boost Converter
Current Mode Control w/ 45V/1.75A MOSFET
GENERAL DESCRIPTION
■ PACKAGE OUTLINE
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.
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.)
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
PRODUCT CLASSIFICATION
Version
Oscillation
Frequency
Package
NJW4132U2-A
A
300kHz typ.
SOT-89-5
NJW4132U2-B
B
700kHz typ.
SOT-89-5
Part Number
Ver.2013-04-16
Operating
Temperature
Range
General Spec.
-40°C to +85°C
General Spec.
-40°C to +85°C
-1-
NJW4132
PIN CONFIGURATION
5
(2)
4
PIN FUNCTION
1. SW
2. GND
3. IN4. EN/SYNC
5. V+
1
2
3
NJW4132U2
BLOCK DIAGRAM
V+
SW
UVLO
TSD
EN/SYNC
Enable
(Standby)
High: ON
Low : OFF(Standby)
100kΩ
SYNC
S Q
OSC
Buffer
R
Low Frequency
Control
PWM
INER⋅AMP
Soft Start
Vref
OCP
CURRENT
SENSE
1V
SLOPE
COMP.
GND
-2-
Ver.2013-04-16
NJW4132
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Supply Voltage
V+
SW pin Voltage
VSW
IN- pin Voltage
VINEN/SYNC pin Voltage
VEN/SYNC
(Ta=25°C)
MAXIMUM RATINGS
UNIT
+45
V
+45
V
-0.3 to +6
V
+45
V
SOT-89-5
625 (*1)
Power Dissipation
PD
mW
2,400 (*2)
Junction Temperature Range
Tj
-40 to +150
°C
Operating Temperature Range
Topr
-40 to +85
°C
Storage Temperature Range
Tstg
-40 to +150
°C
(*1): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2)
(*2): Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 4Layers)
(For 4Layers: Applying 74.2×74.2mm inner Cu area and a thermal via hall to a board based on JEDEC standard JESD51-5)
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
Supply Voltage
V+
External Clock Input Range
fSYNC
A version
B version
Ver.2013-04-16
MIN.
4.5
TYP.
–
MAX.
40
UNIT
V
290
690
–
–
500
1,000
kHz
-3-
NJW4132
(Unless otherwise noted, V+=VEN./SYNC=12V, Ta=25°C)
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Under Voltage Lockout Block
ON Threshold Voltage
OFF Threshold Voltage
Hysteresis Voltage
VT_ON
VT_OFF
VHYS
TSS
Soft Start Block
Soft Start Time
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
V+= L → H
V+= H → L
4.2
4.1
70
4.35
4.25
100
4.5
4.4
–
V
V
mV
VB=0.95V
5
10
15
ms
270
630
–
–
300
700
50
117
330
770
–
–
kHz
kHz
kHz
kHz
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)
fOSC
fOSC_LIM
fDV
V+=4.5V to 40V
–
1
–
%
fDT
Ta=-40°C to +85°C
–
5
–
%
-1.0%
-0.1
1.0
–
+1.0%
+0.1
V
µA
85
–
–
–
–
90
300
110
220
90
–
425
155
355
125
%
ns
ns
ns
ns
–
42
–
ms
–
1.75
–
0.4
2.1
–
0.65
2.25
1
Ω
A
µA
VB
IB
MAXDUTY
tON-min1
tON-min2
OCP Block
COOL DOWN Time
tCOOL
Output Block
Output ON Resistance
Switching Current Limit
SW Leak Current
RON
ILIM
ILEAK
-4-
A version, VIN-=0.9V
B version, VIN-=0.9V
A version, VIN-=0.4V
B version, VIN-=0.4V
VIN-=0.9V
A version
B version
A version, fSYNC=400kHz
B version, fSYNC=800kHz
ISW=1A
VEN/SYNC=0V, VSW=45V
Ver.2013-04-16
NJW4132
(Unless otherwise noted, V+=VEN/SYNC=12V, Ta=25°C)
ELECTRICAL CHARACTERISTICS
PARAMETER
Standby Control Block
ON Control Voltage
OFF Control Voltage
Input Bias Current
(EN/SYNC pin)
SYMBOL
VON
VOFF
IEN
TEST CONDITION
VEN/SYNC= L → H
VEN/SYNC= H → L
VEN/SYNC=12V
MIN.
TYP.
MAX.
UNIT
1.6
0
–
–
V+
0.5
V
V
–
165
300
µA
–
2.1
2.65
mA
–
2.5
3.0
mA
–
–
1
µA
General Characteristics
Quiescent Current
Standby Current
Ver.2013-04-16
IDD
IDD_STB
A version,
RL=no load, VIN-=0.9V
B version,
RL=no load, VIN-=0.9V
VEN/SYNC=0V
-5-
NJW4132
TYPICAL APPLICATIONS
Boost Converter
V IN
L
CIN
SBD
COUT
V OUT
CFB
R2
RFB
V+
SW
NJW4132
EN/
SYNC
GND
R1
IN-
EN/SYNC
High: ON
Low: OFF
(Standby)
Buck-Boost (SEPIC) Converter
V IN
L1
CIN
C1
SBD
COUT
V OUT
CFB
R2
RFB
SW
V+
NJW4132
EN/
SYNC
GND
L2
R1
IN-
EN/SYNC
High: ON
Low: OFF
(Standby)
-6-
Ver.2013-04-16
NJW4132
TYPICAL CHARACTERISTICS
Oscillation Frequency vs. Supply Voltage
(A ver., VIN-=0.9V, Ta=25°C)
Oscillation Frequency vs. Supply Voltage
(B ver., VIN-=0.9V, Ta=25°C)
720
Oscillation Frequnecny fOSC (kHz)
Oscillation Frequnecny fOSC (kHz)
320
315
310
305
300
295
290
285
280
715
710
705
700
695
690
685
680
0
10
20
30
+
Supply Voltage V (V)
40
0
Quiescent Current vs. Supply Voltage
(A ver., RL=no load, VIN-=0.9V, Ta=25°C)
40
Quiescent Current vs. Supply Voltage
(B ver., RL=no load, VIN-=0.9V, Ta=25°C)
3
Quiescent Current IDD (mA)
3
Quiescent Current IDD (mA)
10
20
30
+
Supply Voltage V (V)
2.5
2
1.5
1
0.5
0
2.5
2
1.5
1
0.5
0
0
10
20
30
+
Supply Voltage V (V)
40
0
10
20
30
+
Supply Voltage V (V)
40
Reference Voltage vs. Supply Voltage
(Ta=25°C)
Reference Voltage VB (V)
1.01
1.005
1
0.995
0.99
0
Ver.2013-04-16
10
20
30
+
Supply Voltage V (V)
40
-7-
NJW4132
TYPICAL CHARACTERISTICS
Oscillation Frequency vs Temperature
+
(A ver., V =12V, VIN-=0.9V)
780
Oscillation Frequency fosc (kHz)
Oscillation Frequency fosc (kHz)
330
320
310
300
290
280
270
760
740
720
700
680
660
640
620
-50
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Reference Voltage vs. Temperature
+
(V =12V)
Switching Current Limit ILIM (A)
Reference Voltage VB (V)
2.8
1.005
1
0.995
2.6
2.4
+
V =4.5V, 12V, 40V
2.2
2
1.8
1.6
1.4
0.99
-50
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Output ON Resistance vs. Temperature
(ISW=1A)
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Under Voltage Lockout Voltage vs. Temperature
4.5
0.8
4.45
0.7
0.6
+
V =4.5V, 12V, 40V
0.5
0.4
0.3
0.2
Threshold Voltage (V)
Output ON Resistance RON (Ω)
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Switching Current Limit vs. Temperature
1.01
VT_ON
4.4
4.35
4.3
VT_OFF
4.25
4.2
4.15
0.1
4.1
0
-50
-8-
Oscillation Frequency vs Temperature
+
(B ver., V =12V, VIN-=0.9V)
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Ver.2013-04-16
NJW4132
TYPICAL CHARACTERISTICS
Soft Start Time vs. Temperature
+
(V =12V, VB=0.95V)
15
Soft Start Time Tss (ms)
14
13
12
11
10
9
8
7
6
5
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Minimum ON Time1 vs. Temperature
+
(A ver., V =12V)
Minimum ON Time1 vs. Temperature
+
(B ver., V =12V)
180
Minimum ON Time1 tON-min1 (ns)
Minimum ON Time1 tON-min1 (ns)
450
400
350
300
250
200
150
140
120
100
80
60
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
-50
Maximum Duty Cycle vs. Temperature
+
(A ver., V =12V, VIN-=0.9V)
98
96
94
92
90
88
86
84
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Maximum Duty Cycle vs. Temperature
+
(B ver., V =12V, VIN-=0.9V)
100
Maximum Duty Cycle MAXDUTY (%)
100
Maximum Duty Cycle MAXDUTY (%)
160
98
96
94
92
90
88
86
84
-50
Ver.2013-04-16
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
-9-
NJW4132
TYPICAL CHARACTERISTICS
Quiescent Current vs. Temperature
(A ver., RL=no load, VIN-=0.9V)
3
2.5
+
V =12V, 40V
2
+
V =4.5V
1.5
1
0.5
Quiescent Current IDD (mA)
Quiescent Current IDD (mA)
3
-50
+
V =4.5V, 12V, 40V
2
1.5
1
0.5
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Standby Current vs. Temperature
(VEN/SYNC=0V)
0.9
0.8
0.7
0.6
0.5
+
V =40V
+
V =12V
+
V =4.5V
0.4
0.3
0.2
0.1
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Switching Leak Current vs. Temperature
+
(V =12V, VEN/SYNC=0V, VSW=45V)
3
Switching Leak Current ILEAK (µA)
1
Standby Current IDD_STB (µA)
2.5
0
0
2.5
2
1.5
1
0.5
0
0
-50
- 10 -
Quiescent Current vs. Temperature
(B ver., RL=no load, VIN-=0.9V)
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
-50
-25
0
25 50 75 100 125 150
Ambient Temperature Ta (°C)
Ver.2013-04-16
NJW4132
MEMO
[CAUTION]
The specifications on this databook are only
given for information , without any guarantee
as regards either mistakes or omissions. The
application circuits in this databook are
described only to show representative usages
of the product and not intended for the
guarantee or permission of any right including
the industrial rights.
Ver.2013-04-16
- 11 -