Automotive NJW4750
Quad Channel Combination Regulator
FEATURES
AEC-Q100 Grade1 Qualified *
Operating temperature range -40 to 125C
Including four regulators;
Ch.1: Wide input range 1.2A buck converter.
Ch.2: Low voltage 0.6A synchronous buck converter.
Ch.3: Selectable regulator.
Low voltage 0.6A synchronous buck converter
/ Low voltage 0.3A LDO
Ch.4: Low voltage 0.3A LDO
e.g.） Ta=85 C, fosc=2MHz
DC-DC
Ch.1: 12V 3.3V/1000mA
(Included supply for Ch.2, 3, 4)
Ch.2: 3.3V 1.8V/500mA
Ch.3: 3.3V 1.2V/500mA
LDO
Ch.4: 3.3V 2.8V/200mA
Wide operating input voltage range
3.9V(UVLO ON: 3.35V) to 40V (Ch.1)
2.4V to 5.5V (Ch.2, Ch.3, Ch.4)
Free power-on sequence
- Individual Power-Good Function
(High precision -7%, + 15%)
- Individual Standby Function
Protection function
- UVLO (Under Voltage Lockout)
- Over current protection function for more safety operation
(Hiccup or Latch)
- Thermal shutdown
Oscillating frequency
280kHz to 2.4MHz
External clock synchronization
Anti-phase operation between Ch.1 and Ch.2 / 3
Current mode control buck converters
Built-in compensation circuit
Soft start function
*AEC-Q100 Reliability test is in progress now.
GENERAL DESCRIPTION
The NJW4750 is quad channel combination regulator
including one wide input range buck converter and
three secondary synchronous buck converter / LDO.
Ch.3 can be selectable to the synchronous buck converter mode or LDO mode. Therefore, the NJW4750
expands the choices when building power supply block
suitable for various applications.
The NJW4750 is operated anti-phase operation between Ch.1 and Ch.2 / 3 in order to reduce EMI noise.
Every regulator has individual enable pin and power-good pin. Therefore, flexible power-on sequence
configuration is available.
The NJW4750 has two types of over-current protection
according to application demand.
Furthermore, it adopts a new overcurrent detection
method which is more safety and contributes to miniaturization of the inductor.
Small package: 3.4mm × 2.6mm QFN is adopted suitable for small application such as camera module.
TARGET APPLICATION
Camera Module(Automotive)
Rader(Automotive)
Photoelectric sensor(FA)
Small Application and other.
APPLICATION
PACKAGE
EQFN26-HH
3.4mm x 2.6mm
Ver.1.0
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-1-
Automotive NJW4750
BLOCK DIAGRAM
Ver.1.0
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-2-
Automotive NJW4750
PIN CONFIGURATION
TOP VIEW
PIN NO.
SYMBOL
DESCRIPTION
1
GND
Ground
2
EN3
3
FB3
4
PIN NO.
SYMBOL
DESCRIPTION
14
GND
Ground
Ch.3 Enable input
15
SW1
Ch.1 Output
Ch.3 Voltage feedback input
16
EN4
Ch.4 Enable input
NC
NC
17
LDOVOUT
Ch.4 Output
5
FB2
Ch.2 Voltage feedback input
18
FB4
Ch.4 Voltage feedback input
6
EN2
Ch.2 Enable input
19
LDOVIN
Ch.4 Power supply input
7
RT
Oscillation frequency setting
20
PG4
Ch.4 Power-good output
8
GND
Ground
21
GND
Ground
9
PG1
Ch.1 Power-good output
22
SW2
Ch.2 Output
10
MODE
Ch.3 Mode select / OCP setting
23
PG2
Ch.2 Power-good output
11
FB1
Ch.1 Voltage feedback input
24
VIN2
Ch.2, Ch.3 Power supply input
12
EN1/SYNC
Ch.1 Enable input /External CLK input
25
PG3
Ch.3 Power-good output
13
VIN1
Ch.1 Power supply input
26
SW3
Ch.3 Output
PRODUCT NAME INFORMATION
NJW4750 MHH -T1 (TE1)
Package
MHH:
EQFN26-HH
ORDERING INFORMATION
Part Number
Taping Form
T1: Automotive
PRODUCT NAME
PACKAGE
NJW4750MHH-T1(TE1)
EQFN26-HH
Ver.1.0
AUTO
MOTIVE
yes
RoHS
yes
HALOGEN
FREE
yes
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TERMINAL
FINISH
Sn2Bi
MARKING
WEIGHT
(mg)
MOQ
(pcs)
4750T
18
1500
-3-
Automotive NJW4750
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
MAXIMUM RATING
UNIT
VVIN1
-0.3 to +45
V
VVIN2, VLDOVIN
-0.3 to +7
V
Voltage between pins
VIN1 - SW1
VVIN1–SW1
+45
V
SW2/SW3 pin Voltage
VSW2
VSW3
+7
V
EN/SYNC pin Voltage
VEN1/SYNC
-0.3 to +45
V
VEN2, VEN3
-0.3 to +7
V
VEN4
-0.3 to +45
V
FB pin Voltage
VFB1, VFB2, VFB3, VFB4
-0.3 to +7
V
PG pin Voltage
VPG1, VPG2, VPG3, VPG4
-0.3 to +7
Supply Voltage
EN pin Voltage
EQFN26-HH
V
850 (1)
2500 (2)
Power Dissipation(Ta=25C)
PD
mW
Junction Temperature
Tj
-40 to +150
C
Operating Temperature
Topr
-40 to +125
C
Storage Temperature
Tstg
-50 to +150
C
(1): Mounted on glass epoxy board.
(101.5×114.5×1.6mm:based on EIA/JEDEC standard,2layers, with Exposed Pad)
(2): Mounted on glass epoxy board.
(101.5×114.5×1.6mm:based on EIA/JEDEC standard,4layers, with Exposed Pad)
(For 4Layers: Applying 99.5×99.5mm inner Cu area and a thermal via holes to a board based on JEDEC standard JESD51-5)
RECOMMENDED OPERATING CONDITIONS
PARAMETER
SYMBOL
VALUE
UNIT
VVIN1
3.9 to 40
V
VVIN2, VLDOVIN
2.4 to 5.5
V
VEN1/SYNC
0 to 40
V
EN pin Voltage
VEN2, VEN3, VEN4
0 to 5.5
V
PG pin Voltage
VPG1, VPG2, VPG3, VPG4
0 to 5.5
V
Timing Resistor
RT
1.8 to 27
Oscillating Frequency
fOSC
280 to 2400
k
kHz
External Clock Input
fSYNC
fOSC0.9 to fOSC1.7
Upper limit 2800kHz
Supply Voltage
EN/SYNC pin Voltage
Ver.1.0
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kHz
-4-
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=VEN1/SYNC=12V, RT=6.8k, Ta=25C)
Ch.1 (Wide input range buck converter)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
3.60
3.75
3.90
3.60
–
3.90
3.05
3.20
3.35
3.05
–
3.35
500
550
–
VFB1=0.75V
1.0
2.5
4.0
VFB1=0.75V
Ta=-40C to +125C
0.5
–
4.5
RT=27k
250
280
310
RT=27k
Ta=-40C to +125C
250
–
310
RT=6.8k
900
1000
1100
RT=6.8k
Ta=-40C to +125C
900
–
1100
RT=1.8k
2200
2400
2600
RT=1.8k
Ta=-40C to +125C
2200
–
2600
-1.0%
0.8
+1.0%
-2.0%
–
+2.0%
-0.1
–
0.1
-0.1
–
0.1
UNIT
Under Voltage Lock Out Circuit Block
VVIN1=L → H
ON Threshold Voltage
VT_ON1
VVIN1=L → H
Ta=-40C to +125C
VVIN1=H → L
OFF Threshold Voltage
VT_OFF1
VVIN1=H → L
Ta=-40C to +125C
Hysteresis Voltage
VHYS1
V
V
mV
Soft Start Block
Soft Start Time
tSS1
ms
Oscillator Block
Oscillating Frequency 1
fOSC11
Oscillating Frequency 2
fOSC12
Oscillating Frequency 3
fOSC13
kHz
kHz
kHz
Error Amplifier Block
Reference Voltage
VB1
Input Bias Current
IB1
Ver.1.0
Ta=-40C to +125C
Ta=-40C to +125C
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A
-5-
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=VEN1/SYNC=12V, RT=6.8k, Ta=25C)
Ch.1 （Wide input range buck converter）
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
VFB1=0.7V
100
–
–
VFB1=0.7V
Ta=-40C to +125C
100
–
–
UNIT
PWM Comparator Block
Maximum Duty Cycle
MAXDUTY1
%
Minimum OFF Time
tOFF1-min
–
55
–
ns
Minimum ON Time
tON1-min
–
60
–
ns
Over Current Protection Circuit Block
tCOOL1
RMODE=36k or 10 k
–
75
–
ms
Output ON Resistance
RON1
ISW1=0.8A
–
0.5
0.8
Switching Current Limit
ILIM1
1.4
1.7
2.0
A
–
–
4
A
1.6
–
40.0
1.6
–
40.0
0
–
0.4
0
–
0.4
–
1
3
–
–
5
Cool Down Time
Output Block
Switching Leak Current
ILEAK1
VEN1/SYNC=0V, VVIN1=40V
VSW1=0V
Ta=-40C to +125C
Enable Control / Sync Block (EN1/SYNC)
VEN1/SYNC=L → H
High Threshold Voltage
VTHH_EN1/SYNC
VEN1/SYNC=L → H
Ta=-40C to +125C
VEN1/SYNC=H → L
Low Threshold Voltage
VTHL_EN1/SYNC
VEN1/SYNC=H → L
Ta=-40C to +125C
VEN1/SYNC=5V
Input Bias Current
Ver.1.0
IEN1/SYNC
VEN1/SYNC=5V
Ta=-40C to +125C
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V
V
A
-6-
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=VEN1/SYNC=12V, RT=6.8k, Ta=25C)
Ch.1 (Wide input range buck converter)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
Rising
0.836
–
0.924
Rising, Ta=-40C to +125C
Rising
0.836
–
0.924
0.745
–
0.775
Rising, Ta=-40C to +125C
0.745
–
0.775
UNIT
Power Good Block（PG1）
High Level Detection
Reference Voltage
VTHH_PG1
Low Level Detection
Reference Voltage
VTHL_PG1
Hysteresis Voltage
VHYS_PG1
Power Good ON Resistance
RON_PG1
Leak Current at OFF State
Ver.1.0
ILEAK_PG1
V
V
–
16
–
mV
IPG1=10mA
–
100
–
VPG1=5.5V
–
–
0.1
VPG1=5.5V
Ta=-40C to +125C
–
–
0.1
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A
-7-
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VVIN2=VEN2=3.3V, RT=6.8k, Ta=25C)
Ch.2 (Low voltage synchronous buck converter)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
2.10
2.25
2.40
2.10
–
2.40
2.00
2.15
2.30
2.00
–
2.30
50
100
–
VFB2=0.75V
1.0
2.5
4.0
VFB2=0.75V
Ta=-40C to +125C
0.5
–
4.5
RT=27k
250
280
310
RT=27k
Ta=-40C to +125C
250
–
310
RT=6.8k
900
1000
1100
RT=6.8k
Ta=-40C to +125C
900
–
1100
RT=1.8k
2200
2400
2600
RT=1.8k
Ta=-40C to +125C
2200
–
2600
-1.0%
0.8
+1.0%
-2.0%
–
+2.0%
-0.1
–
0.1
-0.1
–
0.1
UNIT
Under Voltage Lock Out Circuit Block
VVIN2=L → H
ON Threshold Voltage
VT_ON2
VVIN2=L → H
Ta=-40C to +125C
VVIN2=H → L
OFF Threshold Voltage
VT_OFF2
VVIN2=H → L
Ta=-40C to +125C
Hysteresis Voltage
VHYS2
V
V
mV
Soft Start Block
Soft Start Time
tSS2
ms
Oscillator Block
Oscillating Frequency 1
Oscillating Frequency 2
Oscillating Frequency 3
fOSC21
fOSC22
fOSC23
kHz
kHz
kHz
Error Amplifier Block
Reference Voltage
VB2
Input Bias Current
IB2
Ver.1.0
Ta=-40C to +125C
Ta=-40C to +125C
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V
A
-8-
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VVIN2=VEN2=3.3V, RT=6.8k, Ta=25C)
Ch.2 (Low voltage synchronous buck converter)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
VFB2=0.7V
100
–
–
VFB2=0.7V
Ta=-40C to +125C
100
–
–
UNIT
PWM Comparator Block
Maximum Duty Cycle
MAXDUTY2
%
Minimum OFF Time
tOFF2-min
–
55
–
ns
Minimum ON Time
tON2-min
–
80
–
ns
Over Current Protection Circuit Block
tCOOL2
RMODE=36k or 10 k
–
75
–
ms
Pch Output ON Resistance
RONP2
ISW2SOURCE=0.5A
–
0.5
0.8
Nch Output ON Resistance
RONN2
ISW2SINK=0.5A
–
0.3
0.5
0.7
1.0
1.3
A
–
–
4
A
1.0
–
5.5
1.0
–
5.5
0
–
0.4
0
–
0.4
–
7
14
–
–
14
Cool Down Time
Output Block
Switching Current Limit
Switching Leak Current
ILIM2
ILEAK2
VEN2=0V, VVIN2=5.5V
VSW2=0V
Ta=-40C to +125C
Enable Control Block (EN2)
VEN2=L → H
High Threshold Voltage
VTHH_EN2
VEN2=L → H
Ta=-40C to +125C
VEN2=H → L
Low Threshold Voltage
VTHL_EN2
VEN2=H → L
Ta=-40C to +125C
VEN2=3.3V
Input Bias Current
Ver.1.0
IEN2
VEN2=3.3V
Ta=-40C to +125C
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V
V
A
-9-
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VVIN2=VEN2=3.3V, RT=6.8k, Ta=25C)
Ch.2 (Low voltage synchronous buck converter)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
Rising
0.836
–
0.924
Rising, Ta=-40C to +125C
Rising
0.836
–
0.924
0.745
–
0.775
Rising, Ta=-40C to +125C
0.745
–
0.775
UNIT
Power Good Block (PG2)
High Level Detection
Reference Voltage
VTHH_PG2
Low Level Detection
Reference Voltage
VTHL_PG2
Hysteresis Voltage
VHYS_PG2
Power Good ON Resistance
RON_PG2
Leak Current at OFF State
Ver.1.0
ILEAK_PG2
V
V
–
16
–
mV
IPG2=10mA
–
100
–
VPG2=5.5V
–
–
0.1
VPG2=5.5V
Ta=-40C to +125C
–
–
0.1
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A
- 10 -
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VVIN2=VEN3=3.3V, RT=6.8k , Ta=25C)
Ch.3 (Selectable regulator: SW Reg. MODE and LDO MODE can share the same table.)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
1.0
–
5.5
1.0
–
5.5
0
–
0.4
0
–
0.4
–
7
14
–
–
14
Rising
0.836
–
0.924
Rising, Ta=-40C to +125C
Rising
0.836
–
0.924
0.745
–
0.775
Rising, Ta=-40C to +125C
0.745
–
0.775
–
16
–
mV
IPG3=10mA
–
100
–
VPG3=5.5V
–
–
0.1
VPG3=5.5V
Ta=-40C to +125C
–
–
0.1
Enable Control Block（EN3）
VEN3=L → H
High Threshold Voltage
VTHH_EN3
VEN3=L → H
Ta=-40C to +125C
VEN3=H → L
Low Threshold Voltage
VTHL_EN3
VEN3=H → L
Ta=-40C to +125C
VEN3=3.3V
Input Bias Current
IEN3
VEN3=3.3V
Ta=-40C to +125C
V
V
A
Power Good Block (PG3)
High Level Detection
Reference Voltage
VTHH_PG3
Low Level Detection
Reference Voltage
VTHL_PG3
Hysteresis Voltage
VHYS_PG3
Power Good ON Resistance
RON_PG3
Leak Current at OFF State
ILEAK_PG3
Ver.1.0
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V
V
A
- 11 -
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VVIN2=VEN3=3.3V, RT=6.8k, RMODE= 82kΩ or 36kΩ, Ta=25C)
Ch.3 (Selectable regulator: SW Reg. MODE)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
2.10
2.25
2.40
2.10
–
2.40
2.00
2.15
2.30
2.00
–
2.30
50
100
–
VFB3=0.75V
1.0
2.5
4.0
VFB3=0.75V
Ta=-40C to +125C
0.5
–
4.5
RT=27k
250
280
310
RT=27k
Ta=-40C to +125C
250
–
310
RT=6.8k
900
1000
1100
RT=6.8k
Ta=-40C to +125C
900
–
1100
RT=1.8k
2200
2400
2600
RT=1.8k
Ta=-40C to +125C
2200
–
2600
-1.0%
0.8
+1.0%
-2.0%
–
+2.0%
-0.1
–
0.1
-0.1
–
0.1
UNIT
Under Voltage Lock Out Circuit Block
VVIN2=L → H
ON Threshold Voltage
VT_ON3
VVIN2=L → H
Ta=-40C to +125C
VVIN2=H → L
OFF Threshold Voltage
VT_OFF3
VVIN2=H → L
Ta=-40C to +125C
Hysteresis Voltage
VHYS3
V
V
mV
Soft Start Block
Soft Start Time
tSS3
ms
Oscillator Block
Oscillating Frequency 1
Oscillating Frequency 2
Oscillating Frequency 3
fOSC31
fOSC32
fOSC33
kHz
kHz
kHz
Error Amplifier Block
Reference Voltage
VB3
Input Bias Current
IB3
Ver.1.0
Ta=-40C to +125C
Ta=-40C to +125C
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V
A
- 12 -
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VVIN2=VEN3=3.3V, RT=6.8k, RMODE= 82kΩ or 36kΩ, Ta=25C)
Ch.3 (Selectable regulator: SW Reg. MODE)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
VFB3=0.7V
100
–
–
VFB3=0.7V
Ta=-40C to +125C
100
–
–
UNIT
PWM Comparator Block
Maximum Duty Cycle
MAXDUTY3
%
Minimum OFF Time
tOFF3-min
–
55
–
ns
Minimum ON Time
tON3-min
–
80
–
ns
Over Current Protection Circuit Block
tCOOL3
RMODE=36k
–
75
–
ms
Pch Output ON Resistance
RONP3
ISW3SOURCE=0.5A
–
0.5
0.8
Nch Output ON Resistance
RONN3
ISW3SINK=0.5A
–
0.3
0.5
0.7
1.0
1.3
A
–
–
4
A
Cool Down Time
Output Block
Switching Current Limit
Switching Leak Current
Ver.1.0
ILIM3
ILEAK3
VEN3=0V, VVIN2=5.5V
VSW3=0V
Ta=-40C to +125C
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- 13 -
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VVIN2 =VEN3=3.3V, RT=6.8k, RMODE= OPEN or 10kΩ, Ta=25C)
Ch.3 (Selectable regulator: LDO MODE)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
-1.0%
0.8
+1.0%
-2.0%
–
+2.0%
300
600
–
300
–
–
–
0.003
0.009
–
–
0.020
–
40
–
UNIT
Error Amplifier Block
Reference Voltage
Output Current
VB3
IOUT3
Ta=-40C to +125C
VOUT3×0.9
VOUT3×0.9
Ta=-40C to +125C
IOUT3=1mA to 200mA
Load Regulation
⊿VOUT3
/IOUT3
Ripple Rejection
RR3
IOUT3=200mA
–
0.2
0.3
Dropout Voltage
⊿VIO3
IOUT3=200mA
Ta=-40C to +125C
–
–
0.4
⊿VOUT3
/Ta
IOUT3=150mA
Ta=-20C to +75C
–
±50
–
Average Temperature
Coefficient of Output
Voltage
Ver.1.0
IOUT3=1mA to 200mA
Ta=-40C to +125C
ein=50mVrms, f=1kHz
VOUT3=2.5V, IOUT3=150mA
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V
mA
%/mA
dB
V
ppm/C
- 14 -
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=12V, VLDOVIN=VEN4 =3.3V, RT=6.8k, Ta=25C)
Ch.4 (Low voltage LDO)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
-1.0%
0.8
+1.0%
-2.0%
–
+2.0%
300
600
–
300
–
–
–
0.003
0.009
–
–
0.020
–
40
–
UNIT
Error Amplifier Block
Reference Voltage
Output Current
VB4
IOUT4
Ta=-40C to +125C
VOUT4×0.9
VOUT4×0.9
Ta=-40C to +125C
IOUT4=1mA to 200mA
Load Regulation
⊿VOUT4
/IOUT4
Ripple Rejection
RR4
IOUT4=200mA
–
0.2
0.3
Dropout Voltage
⊿VIO4
IOUT4=200mA
Ta=-40C to +125C
–
–
0.4
⊿VOUT4
/Ta
IOUT4=150mA
Ta=-20C to +75C
–
±50
–
1.0
–
5.5
1.0
–
5.5
0
–
0.4
0
–
0.4
–
7
14
–
–
14
Rising
0.836
–
0.924
Rising, Ta=-40C to +125C
Rising
0.836
–
0.924
0.745
–
0.775
Rising, Ta=-40C to +125C
0.745
–
0.775
Average Temperature
Coefficient of Output
Voltage
IOUT4=1mA to 200mA
Ta=-40C to +125C
ein=50mVrms, f=1kHz
VOUT4=2.5V, IOUT4=150mA
V
mA
%/mA
dB
V
ppm/C
Enable Control Block (EN4)
VEN4=L → H
High Threshold Voltage
Low Threshold Voltage
Input Bias Current
VTHH_EN4
VTHL_EN4
IEN4
VEN4=L → H
Ta=-40C to +125C
VEN4=H → L
VEN4=H → L
Ta=-40C to +125C
VEN4=3.3V
VEN4=3.3V
Ta=-40C to +125C
V
V
A
Power Good Block (PG4)
High Level Detection
Reference Voltage
VTHH_PG4
Low Level Detection
Reference Voltage
VTHL_PG4
Hysteresis Voltage
VHYS_PG4
Power Good ON Resistance
RON_PG4
Leak Current at OFF State
Ver.1.0
ILEAK_PG4
V
V
–
16
–
mV
IPG4=10mA
–
100
–
VPG4=5.5V
–
–
0.1
VPG4=5.5V
Ta=-40C to +125C
–
–
0.1
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A
- 15 -
Automotive NJW4750
ELECTRICAL CHARACTERISTICS
(Unless otherwise noted, VVIN1=VEN1/SYNC=12V, VVIN2=VLDOVIN=VEN2=VEN3=VEN4=3.3V, RT=6.8k, Ta=25C)
Common parameter
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
–
2.3
3.5
–
–
3.5
–
2
3
UNIT
General Characteristic
Quiescent Current 1
(VIN1)
Quiescent Current 2
(VIN2)
Quiescent Current 3
(LDOVIN)
Standby Current 1
(VIN1)
Standby Current 2
(VIN2)
Standby Current 3
(LDOVIN)
Ver.1.0
RL=no load, VFB1=0.9V
IDD1
IDD2
IDDLDO
IDD_STB1
IDD_STB2
IDD_STBLDO
RL=no load, VFB1=0.9V
Ta=-40C to +125C
RL=no load
VFB2=0.9V, VFB3=0.9V
RL=no load
VFB2=0.9V, VFB3=0.9V
Ta=-40C to +125C
RL=no load, VFB4=0.9V
RL=no load, VFB4=0.9V
Ta=-40C to +125C
VEN1/SYNC=0V
VEN2=0V
VEN3=0V
VEN4=0V
VEN1/SYNC=0V
VEN2=0V
VEN3=0V
VEN4=0V
Ta=-40C to +125C
VEN1/SYNC=0V
VEN2=0V
VEN3=0V
VEN4=0V
VEN1/SYNC=0V
VEN2=0V
VEN3=0V
VEN4=0V
Ta=-40C to +125C
VEN1/SYNC=0V
VEN2=0V
VEN3=0V
VEN4=0V
VEN1/SYNC=0V
VEN2=0V
VEN3=0V
VEN4=0V
Ta=-40C to +125C
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mA
mA
–
–
3
–
0.1
0.2
–
–
0.2
–
–
3
mA
A
–
–
6
–
–
2
A
–
–
4
–
–
15
A
–
–
20
- 16 -
Automotive NJW4750
THERMAL CHARACTERISTICS
PARAMETER
Junction-to-ambient
Thermal resistance
Junction-to-Top of package
Characterization parameter
SYMBOL
VALUE
UNIT
(3)
θja
146.3
(4)
50.5
ψjt
6.1
(4)
0.8
°C /W
(3)
°C /W
(3): Mounted on glass epoxy board.
(101.5×114.5×1.6mm:based on EIA/JEDEC standard,2layers, with Exposed Pad)
(4): Mounted on glass epoxy board.
(101.5×114.5×1.6mm:based on EIA/JEDEC standard,4layers, with Exposed Pad)
(For 4Layers: Applying 99.5×99.5mm inner Cu area and a thermal via holes to a board based on JEDEC standard
JESD51-5)
POWER DISSIPATION vs. AMBIENT TEMPERATURE
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Automotive NJW4750
TYPICAL CHARACTERISTICS
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TYPICAL CHARACTERISTICS
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TYPICAL CHARACTERISTICS
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TYIPICAL CHARACTERISTICS
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TYPICAL CHARACTERISTICS
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TYPICAL CHARACTERITICS
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TYPICAL CHARACTERISTICS
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TYPICAL CHARACTERISTICS
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TYPICAL CHARACTERISTICS
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TYIPICAL CHARACTERISTICS
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Automotive NJW4750
Technical Information
INTRODUCTION
Please note the following when using NJW 4750.
The NJW 4750 can operate each Ch. independently.
However, even if Ch.1 is not used, it is necessary to input a power supply to VIN1 pin.
Ch.3 (LDOMODE) and Ch.4 need to be start-up after power Ch. becomes active.
The LDO may not be start-up by the protection function.
e.g. The case of using Ch.1 as a power supply for Ch.4.
It becomes the start of Ch.4 after normal start of Ch.1 by connecting PG1 pin of Ch.1 to EN4 pin of Ch.4.
PIN DESCRIPTION
PIN NO.
SYMBOL
1
GND
Ground pin.
2
EN3
This pin controls the operation and stop of Ch.3. High Level: operation, Low level or Open level: Standby mode.
3
FB3
4
NC
5
FB2
6
EN2
This pin controls the operation and stop of Ch.2. High Level: operation, Low level or Open level: Standby mode.
7
RT
Oscillation frequency setting pin by Timing Resistor. Oscillating frequency should set between 280kHz and 2.4MHz.
8
GND
Ground pin.
9
PG1
Power-good output of Ch.1 configured with open drain.
10
MODE
11
FB1
12
EN1/SYNC
13
VIN1
14
GND
Ground pin.
15
SW1
Ch.1 Output.
16
EN4
This pin controls the operation and stop of Ch.4. High Level: operation, Low level or Open level: Standby mode.
17
LDOVOUT
18
FB4
19
LDOVIN
20
PG4
Power-good output of Ch.4 configured with open drain.
21
GND
Ground pin.
22
SW2
Ch.2 Output.
23
PG2
Power-good output of Ch.2 configured with open drain.
24
VIN2
25
PG3
Power-good output of Ch.3 configured with open drain.
26
SW3
Ch.3 Output.
Exposed
PAD
Ver.1.0
-
DESCRIPTION
This pin detects the output voltage of Ch.3.
The output voltage is divided and inputted so that the FB pin voltage becomes 0.8V same as the reference voltage.
Non connection.
This pin detects the output voltage of Ch.2.
The output voltage is divided and inputted so that the FB pin voltage becomes 0.8V same as the reference voltage.
This pin is used to determine the operation mode. Connect an open or mode setting resistor.
This pin detects the output voltage of Ch.1.
The output voltage is divided and inputted so that the FB pin voltage becomes 0.8V same as the reference voltage.
This pin controls the operation and stop of Ch.1. High Level: operation, Low level or Open level: Standby mode.
By inputting the clock signal, it operates synchronized with the input signal.
Power supply input for IC and Ch.1.
Since the impedance of the power supply path needs to be lowered connecting a capacitor (CIN) near the IC is required.
Ch.4 Output
This pin detects the output voltage of Ch.4.
The output voltage is divided and inputted so that the FB pin voltage becomes 0.8V same as the reference voltage.
Power supply input for Ch.4.
Since the impedance of the power supply path needs to be lowered connecting a capacitor (CIN) near the IC is required.
Power supply input for Ch.2 and Ch.3.
Since the impedance of the power supply path needs to be lowered connecting a capacitor (CIN) near the IC is required.
Exposed PAD on backside should be connected to the ground and soldered to PCB.
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Automotive NJW4750
Technical Information
DESCRIPTION OF BLOCK FEATURES
1. Mode setting
By connecting the resistor between the MODE pin and GND, the operation mode of Ch.3 and protection type of OCP
are selected.(Table 1)
Table 1 The NJW4750 operation mode and setting resistor value.
Setting resistor
RMODE（±5%）
MODE
Min
1
Ch.3
OCP Mode
MODE Pin
Output Voltage
（±5%）
LDO
Latch
2.5V
Max
open
2
82kΩ
110kΩ
SW reg.
Latch
1.4V
3
27kΩ
39kΩ
SW reg.
Hiccup(SW)
Foldback(LDO)
1.2V
4
6.8kΩ
15kΩ
LDO
Hiccup(SW)
Foldback(LDO)
1.0V
The mode setting can be set only at startup, and the state of the mode can be checked by pin voltage.
2. Basic functions of switching regulator. (Ch.1,2 and Ch.3）
Error Amplifier Section (Error AMP)
0.8V±1% precise reference voltage is connected to the non-inverted input of this section.
The output voltage can be set by dividing the output of the converter and connecting to the inverted input (FB pin).
PWM comparator section (PWM), oscillating circuit Section (OSC)
Oscillating frequency can be set by inserting resistor between the RT pin and GND.
Table 2 shows example of oscillating frequency and timing resistor. The resistance is adapted to a series of E24 and a
series of E96.
Please set the oscillating frequency according to Table 2
Table 2 The NJW4750 oscillating frequency and timing resistor value
Oscillating
Frequency
(kHz)
Timing
Resistor
(k)
Oscillating
Frequency
(kHz)
Timing
Resistor
(k)
280
27
1200
5.6
380
20
1750
3.9
500
15
2000
3.0
700
10
2250
2.0
1000
6.8
2400
1.8
NJW4750 is limited in minimum ON time and minimum OFF time, refer to electrical characteristics.
Maximum duty cycle is 100%.
When you design the application, please refer to "Application information - Oscillating frequency setting".
Ver.1.0
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- 29 -
Automotive NJW4750
Technical Information
DESCRIPTION OF BLOCK FEATURES (Continued)
Power MOSFET
The power is stored in the inductor by the switch operation of built-in power MOSFET. The switching current is limited
by the overcurrent protection function.
Power supply, GND pin（VIN、GND）
Current flows into the IC according to drive frequency in a switching element. When impedance of a power supply line
is high, power supply will be unstably, and the performance of the IC can't be drawn out sufficiently.
Therefore, since the impedance of the power supply path needs to be lowered connecting a capacitor (CIN) near the IC
is required.
3. Additional and protection functions of switching regulator. (Ch.1,2 and Ch.3 are similar)
Under voltage lockout (UVLO)
The UVLO circuit stops the IC operation in a low power supply voltage case, and when a power supply voltage becomes higher voltage than threshold, then the IC operation starts.
The threshold voltage has a hysteresis voltage width at rising and falling. A flutter of detection and release of UVLO is
prevented by it.
Soft start function
The output voltage of the converter gradually rises to a set value by the soft start function. The soft start time is 4ms
(max.). It is defined with the time of the error amplifier reference voltage becoming from 0V to 0.75V.(Fig.1)
Soft start operating condition.
・ Ch.1: VVIN1≧VT_ON1、VEN1≧VTHH_EN1
・ Ch.2: VVIN1≧VT_ON1、VVIN2≧VT_ON2、VEN2≧VTHH_EN2
・ Ch.3: VVIN1≧VT_ON1、VVIN2≧VT_ON2、VEN3≧VTHH_EN3
Also thermal shutdown must be disabled.
Fig.1 Soft start timing chart
Ver.1.0
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- 30 -
Automotive NJW4750
DESCRIPTION OF BLOCK FEATURES (Continued)
Technical Information
Over current protection circuit (OCP) (Ch.1,2 and Ch.3 are similar)
Switching regulator block of NJW4750 has 2 kinds of overcurrent protection function.
1. Hiccup (Fig.2):
Switching operation is reduced and output is restricted. When the load state normally returns, it is reset automatically.
2. Latch (Fig.3):
The function as the power supply is suspended.
Latch is released by setting all EN pin to Low or VIN1 pin to 0 V.
※ Hiccup system is each Ch. Independent control. Latch system suspends all output of IC.
Operating condition of OCP
In the soft start operating, Hiccup/Latch becomes ineffective.
The overcurrent protection function operates when one of them of 2 conditions was formed.
VFBx0.4V and 7cycle over current detection continuously.
Overcurrent detection continuously of 1/fosc×240 s.
Fig.2 Hiccup mode OCP timing chart
Fig.3 Latch mode OCP timing chart
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- 31 -
Automotive NJW4750
DESCRIPTION OF BLOCK FEATURES (Continued)
Technical Information
External clock synchronization (Ch.1,2 and Ch.3)
By inputting a square wave to EN1/SYNC pin, the oscillator of NJW4750 can be synchronized to an external frequency.
The input square wave must be on the following specification. (Table 3)
Table 3 The input square wave to EN1/SYNC pin.
Condition
Input Frequency
Duty Cycle
Voltage
Magnitude
fOSC0.9 to fOSC1.7
Upper limit 2,800kHz
40% to 60%
1.6V or more (High level)
0.4V or less (Low level)
Fig.4 Switching operation by external synchronized clock
Ver.1.0
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- 32 -
Automotive NJW4750
DESCRIPTION OF BLOCK FEATURES (Continued)
Technical Information
4. Basic functions of LDO (Ch.3 LDO MODE and Ch.4)
Error amplifier section (Error AMP)
0.8V±1% precise reference voltage is connected to the non-inverted input of this section.
The output voltage can be set by dividing the output of the converter and connecting to the inverted input (FB pin).
5. Additional and protection functions of LDO (Ch.3 LDO MODE and Ch.4)
Over current protection circuit(OCP)
LDO block of NJW4750 can choose 2 kinds of overcurrent protection function.
1. Fold back:
Limits the output current as the output voltage decreases.
2. Latch:
The function as the power supply is suspended at VFBx 0.4V.
Latch is released by setting all EN pin to Low or VIN1 pin to 0V.
※ Fold back system is independent each Ch. Latch system suspends all output of IC.
6. Common protection function / features
Thermal shutdown function (TSD)
When junction temperature of the NJW4750 exceeds the 160°C*, internal thermal shutdown circuit function stops SW
function. When junction temperature decreases to 145°C* or less, SW operation re-start from the soft start operation.
The purpose of this function is to prevent malfunctioning of IC at the high junction temperature.
Therefore it is not something that urges positive use. Please make sure to operate within the junction temperature
range rated (-40°C to 150°C). (* Design value)
Standby function
Each Ch. stops the operating and becomes standby status when the ENx(/SYNC) pin becomes less than 0.4V.
The ENx(/SYNC) pins are internally pulled down with resistor (CH1 :5MΩ、CH2 :500kΩ、CH3 :500kΩ、CH4 :500kΩ),
therefore the NJW4750 becomes standby mode when it is OPEN. Please connect this pin to VINx when you do not
use standby function.
Ver.1.0
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- 33 -
Automotive NJW4750
DESCRIPTION OF BLOCK FEATURES (Continued)
Technical Information
Power Good function
It monitors the output status and outputs a signal from PGx pin that is internally connected to an open drain of
MOSFET.
If the FB pin is within the range of -7% to + 15% of the error amplifier reference voltage, the PG pin becomes high impedance and notifies that the output voltage is normal. Otherwise the PG pin becomes low level and tells the output
voltage is abnormal.
After soft start time, the Power Good function becomes effective in Ch.1, Ch.2, and Ch.3.
The Power Good function of Ch.4 becomes effective after passage for 150μs from EN4: H(@LDOVIN=3.3V).
When ENx pin control is performed by PGx pin, consider the input resistance value of ENx pin.
Fig.5 Power Good function timing chart
Latch mode: added 1/fosc×40000 s delay in the last boot Ch.
Fig.6 Power Good function timing chart at Latch mode
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- 34 -
Automotive NJW4750
APPLICATION INFORMATION(Switching regulator)
Technical Information
Oscillating frequency setting
When a switching frequency is high, a small inductor and capacitor are available.
If oscillating frequency is high, decrease in efficiency and a limit of the minimum ON time and minimum OFF time are
demerit.
The buck converter of ON time and OFF time is decided the following formula.
tON =
(VOUT +VL )
[s]
(VIN -VSWH +VL )×fOSC
tOFF =
1
fOSC
-tON [s]
VIN：Input voltage
VOUT：Output voltage
VSWH：High-side saturation voltage
VL：Catch Diode Vf or Lo-side saturation voltage VSWL
When the ON time becomes shorter than tON-MIN or OFF time becomes shorter than tOFF-MIN, a change of duty or pulse
skip operation may be performed in order to maintain output voltage at a stable state.
Inductors
Since a large current flows into an inductor, please select an appropriate inductor such as not saturate in the application.
Inductors have an important role in slope compensation.
Inductor value is limited selection by supply voltage and oscillation frequency. Recommended selection of the inductor
value is between Hlim. and Llim. shown in Fig.8.
The maximum Output current of worst condition is decided the following formula.
∆IL =
(VIN -VOUT )×VOUT
[A]
L×VIN ×fOSC
IOUT =ILIMx(MIN) -
∆IL
[A]
2
Fig.7 Inductor current state transition (Continuous conduction mode)
Ver.1.0
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- 35 -
Automotive NJW4750
APPLICATION INFORMATION(Switching regulator)
Technical Information
VOUT1=5V
VOUT1=3.3V
VOUT2/3=1.8V
VOUT2/3=1.2V
Fig.8 Inductance range.
Input capacitor
Transient current which is responsive to frequency flows into the input section of a switching regulator. When impedance of a power supply line is high, power supply will be unstably, and the performance of the IC can't be drawn out
sufficiently.
Therefore, since the impedance of the power supply path needs to be lowered connecting a capacitor (CIN) near the IC
is required.
The effective input current can be expressed by the following formula.
IRMS =IOUT ×
√VOUT ×(VIN -VOUT )
[Arms ]
VIN
In the above formula, the maximum current is obtained when VIN=2×VOUT, and the result in this case is IRMS=IOUT(MAX)÷2.
When the input capacitor in selecting, please carry out an evaluation based on an application, and decide a capacitor
value that has adequate margin.
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- 36 -
Automotive NJW4750
Technical Information
APPLICATION INFORMATION(Switching regulator)
Output capacitor
An output capacitor stores power from the inductor, and stabilizes voltage provided to the output.
The NJW4750 is designed phase compensation so that output capacitor of low ESR can be used. Therefore a ceramic capacitor is the most suitable.
Since capacity of a ceramic capacitor may decline by DC supply voltage and temperature change, please confirm it's
characteristics on specification sheet.
When selecting an output capacitor, must be considered Equivalent Series Resistance (ESR) characteristics, ripple
current, and breakdown voltage.
In case of using a low ESR capacitor, it's possible to lower the ripple voltage.
The output ripple noise can be expressed by the following formula.
Vripple(p-p) =∆IL × (ESR+
1
) [V]
8×fOSC ×COUT
The effective ripple current that flows in a capacitor (IRMS) is obtained by the following equation.
IRMS =
∆IL
2√3
[Arms ]
Setting of phase compensation
The NJW 4750 has a built-in phase compensation circuit.
Table 4 shows the values of extern al parts based on oscillation frequency and output voltage.
Table 4 Value of phase compensation
fOSC
1MHz or more
500kHz or less
VOUT
COUT
CFB
RFB
R2
2.5V, 2.8V, 3.3V,
3.6V, 5V
1.8V
1.1V*, 1.2V*
ALL
10μF or more
22pF
1kΩ
30kΩ to 82kΩ
1kΩ
1kΩ
open
30kΩ to 82kΩ
30kΩ to 82kΩ
30kΩ to 82kΩ
22μF or more
22pF
47μF or more
22pF
100μF or more open
* VVIN2 is 4 V or less.
If VVIN2 is set to higher than 4 V, the oscillating frequency is limited up to 1.5MHz.
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- 37 -
Automotive NJW4750
APPLICATION INFORMATION(Switching regulator)
Technical Information
Catch diode
When the switch element is in OFF cycle, the power stored in the inductor flows to the output capacitor via the catch
diode. Therefore an electric current according to the load current flows to the diode every cycle. Since a diode's forward
saturation voltage and current accumulation cause power loss, a Schottky Barrier Diode (SBD), which has a low forward saturation voltage, is most suitable.
When select the SBD, the reverse current at the high temperature is important, too.
The characteristic of SBD has a high reverse current than a general diode. If the reverse current is large, it leads to
the loss of the diode, so check the specification of the SBD
Setting output voltage
The output voltage VOUT is determined by the relative resistances of R1, R2.
R2
VOUT = ( +1) ×VB [V]
R1
Fig.9 Output voltage setting
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- 38 -
Automotive NJW4750
Technical Information
APPLICATION INFORMATION(Switching regulator)
Board layout
In the switching regulator application, since the current flow according to the oscillating frequency, the substrate (PCB)
layout is very important.
Therefore, a current flowing line must be wide and short as much as possible. Fig.10 shows a current loop of a
step-down converter. (In case of synchronous rectification, SBD is changed to built-in SW.)
Especially, the loop of CIN - SW - SBD which has a high frequency switching, is necessary to configure minimum loop
as top priority. It is effective in reducing of spike noise caused by parasitic inductor.
NJW4750
Built-in SW
VIN
CIN
SBD
NJW4750
Built-in SW
L
COUT
VIN
CIN
L
SBD
COUT
(a) Buck converter SW ON
(b) Buck converter SW OFF
Fig.10 Current loop of buck converter
About concerning the GND, it is preferred to separate the power GND and the signal GND, and use single ground
point.
The voltage sensing feedback line should be away as far away as possible from the inductor. Since this line has high
impedance, it is laid out to avoid the influence noise caused by leakage flux from the inductor.
Fig.11 shows example of wiring at buck converter.
To avoid the influence of the voltage
drop, the output voltage should be
detected near the load.
Separate Signal GND
Since FB pin is high impedance, the
from Power GND
voltage detection resistor: R1/R2 is placed
from IC(FB) as near as possible.
Fig.11 Board layout for buck Converter
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- 39 -
Automotive NJW4750
Technical Information
APPLICATION INFORMATION(LDO)
Setting of output voltage
The output voltage VOUT is determined by the relative resistances of R1, R2.
R2
VOUT = ( +1) ×VB [V]
R1
Fig.12 Output voltage setting
Setting of phase compensation
The NJW 4750 has a built-in phase compensation circuit.
Table 5 shows the values of external parts based on output voltage.
Table 5 Value of phase compensation
Ver.1.0
VOUT
COUT
R2
ALL
6.8μF to 22μF
47kΩ
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- 40 -
Automotive NJW4750
Technical Information
CALCULATION OF PACKAGE POWER
The loss of NJW 4750 is the sum of the loss due to switching converter and the loss due to LDO.
Switching convertor
Input Power
：PIN = VIN IIN [W]
Output Power
：POUT = VOUT IOUT [W]
Diode Loss
：PDIODE = VF IL(avg) OFF duty [W]
Power Consumption ：PLOSS = PIN POUT PDIODE [W]
Where:
VIN
VOUT
VF
OFF Duty
：Input Voltage of Converter
：Output Voltage of Converter
：Diode's Forward Saturation Voltage
：Switch OFF Duty Cycle
LDO
Input Power
Output Power
Power Consumption
Where:
VIN
VOUT
IIN
IOUT
IL(avg)
：Input Current of Converter
：Output Current of Converter
：Inductor Average Current
IIN
IOUT
：Input Current of LDO
：Output Current of LDO
：PIN = VIN IIN [W]
：POUT = VOUT IOUT [W]
：PLOSS = PIN POUT [W]
：Input Voltage of LDO
：Output Voltage of LDO
Efficiency (η) is calculated as follows.
η= (POUT PIN) 100 [%]
Please consider temperature derating to the calculated power consumption.
Please consider design power consumption in rated range referring to the power dissipation vs. ambient temperature
characteristics.
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Automotive NJW4750
Technical Information
APPLICATION DESIGN EXAMPLES
Spec
IC:
NJW4750
Output:
3.3V (Ch.1)
1.8V (Ch.2)
1.2V (Ch.3)
2.8V (Ch.4)
Oscillating frequency:
2.0MHz
Schematic
Parts list
Ref.
Part number
Overview
Manufacture
IC
CIN1
CIN2
CLDOIN
RT
L1
SBD
COUT1
CFB1
RFB1
R11
R12
L2
COUT2
CFB2
RFB2
R21
R22
L3
COUT3
CFB3
RFB3
R31
R32
CLDOOUT
R41
R42
RMODE
NJW4750MHH-T1
CGA4J3X5R1H475K125AB
GRT188C81C106ME13#
GRT188C81C106ME13#
3.0kΩ
VLS4012ET-1R5N
CMS14
GRT188C81C106ME13#
22ｐF
1kΩ
24.3kΩ
76.8kΩ
VLS3015ET-2R2M
GRM21BB30J226ME38L
22ｐF
1kΩ
24kΩ
30kΩ
VLS3015ET-2R2M
JMK212BBJ476MG-T
22pF
1kΩ
75kΩ
37.4kΩ
GRT188C81C106ME13#
18.7kΩ
47.5kΩ
30kΩ
Quad Channel Combination Regulator
Ceramic Capacitor 2125 4.7uF, 50V
Ceramic Capacitor 1608 10uF, 16V
Ceramic Capacitor 1608 10uF, 16V
Resistor 1608 3.0kΩ, ±1%, 0.1W
inductor 1.5uH, 2.1A
Schottky Diode 60V, 2A
Ceramic Capacitor 1608 10uF, 16V
Ceramic Capacitor 22pF, 50V
Resistor 1kΩ, ±1%, 0.1W
Resistor 24.3kΩ, ±1%, 0.1W
Resistor 76.8kΩ, ±1%, 0.1W
inductor 2.2uH, 1.5A
Ceramic Capacitor 2125 22uF, 6.3V
Ceramic Capacitor 22pF, 50V
Resistor 1kΩ, ±1%, 0.1W
Resistor 24kΩ, ±1%, 0.1W
Resistor 30kΩ, ±1%, 0.1W
inductor 2.2uH, 1.5A
Ceramic Capacitor 2125 47uF, 6.3V
Ceramic Capacitor 22pF, 50V
Resistor 1kΩ, ±1%, 0.1W
Resistor 75kΩ, ±1%, 0.1W
Resistor 37.4kΩ, ±1%, 0.1W
Ceramic Capacitor 1608 10uF, 16V
Resistor 18.7kΩ, ±1%, 0.1W
Resistor 47.5kΩ, ±1%, 0.1W
Resistor 30kΩ, ±1%, 0.1W/SW_Hiccup MODE
New Japan Radio
TDK
MURATA
MURATA
Std.
TDK
TOSHIBA
MURATA
Std.
Std.
Std.
Std.
TDK
MURATA
Std.
Std.
Std.
Std.
TDK
TAIYO YUDEN
Std.
Std.
Std.
Std.
MURATA
Std.
Std.
Std.
Ver.1.0
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Automotive NJW4750
Technical Information
APPLICATION CHARACTERISTICS
Ver.1.0
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Automotive NJW4750
EQFN26-HH
PACKAGE/ FOOTPATTERN
Unit: mm
PACKAGE DIMENSIONS
EXAMPLE OF SOLDER PADS DIMENSIONS
3.4 ±0.05
R0
.3
7
2.32
0.31
0.4
2.8
0.4
1.52
0.2
0.2
3.6
S
0.2
+0.010
-0.008
S
0. 7 ± 0.05
0.1
2.6 ± 0.05
0.1
0.01
0.05
S
0.21 ± 0.05
A
C0
0.4
.4
1.59 ± 0.05
B
3
0
-R
.4
2.39 ±0.05
0.2 ±0.05
Ver.1.0
0.05
M
S AB
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Automotive NJW4750
EQFN26-HH
PACKAGING INFORMATION
Unit: mm
TAPING DIMENSIONS
Feed direction
P0
φD0
SYMBOL
A
B
D0
D1
E
F
P0
P1
P2
T
T2
K0
W
W1
T
B
W1
W
F
E
P2
A
φD1
P1
K0
T2
DIMENSION
2.8±0.05
3.6±0.05
1.5 +0.1
0
1.0 +0.1
0
1.75±0.1
5.5±0.05
4.0±0.1
8.0±0.1
2.0±0.05
0.25±0.05
1.2
0.85±0.05
+0.3
12.0 -0.1
9.5
REMARKS
BOTTOM DIMENSION
BOTTOM DIMENSION
THICKNESS 0.1max
REEL DIMENSIONS
W1
E
SYMBOL
A
B
C
D
E
W
W1
B
A
D
C
DIMENSION
φ180 -30
φ 60 +10
φ 13±0.2
φ 21±0.8
2±0.5
13 +1.0
0
15.4±1.0
W
TAPING STATE
Insert direction
Sealing with covering tape
(TE1)
Feed direction
Empty tape
Devices
Empty tape
Covering tape
more than 20pitch
1500pcs/reel
more than 15pitch
reel more than 1round
PACKING STATE
Label
Label
Put a reel into a box
Ver.1.0
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Automotive NJW4750
RECOMMENDED MOUNTING METHOD
INFRARED REFLOW SOLDERING METHOD
Recommended reflow soldering procedure
f
260°C
e
230°C
220°C
d
180°C
150°C
Room Temp.
a
a：Temperature ramping rate
b：Pre-heating temperature
time
c：Temperature ramp rate
d：220℃ or higher time
e：230℃ or higher time
f：Peak temperature
g：Temperature ramping rate
b
c
g
: 1 to 4°C /s
: 150 to 180°C
: 60 to 120s
: 1 to 4°C /s
: Shorter than 60s
: Shorter than 40s
: Lower than 260°C
: 1 to 6°C /s
The temperature indicates at the surface of mold package.
Ver.1.0
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Automotive NJW4750
REVISION HISTORY
DATE
REVISION
CHANGES
15.Jun.2018
Ver.1.0
New release
Ver.1.0
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Automotive NJW4750
[ CAUTION ]
1.
New JRC strives to produce reliable and high quality semiconductors. New JRC's semiconductors are intended for specific
applications and require proper maintenance and handling. To enhance the performance and service of New JRC's semiconductors, the devices, machinery or equipment into which they are integrated should undergo preventative maintenance and
inspection at regularly scheduled intervals. Failure to properly maintain equipment and machinery incorporating these products
can result in catastrophic system failures
2.
The specifications on this datasheet are only given for information without any guarantee as regards either mistakes or omissions. The application circuits in this datasheet 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.
All other trademarks mentioned herein are property of their respective companies.
3.
To ensure the highest levels of reliability, New JRC products must always be properly handled.
The introduction of external contaminants (e.g. dust, oil or cosmetics) can result in failures of semiconductor products.
4.
New JRC offers a variety of semiconductor products intended for particular applications. It is important that you select the
proper component for your intended application. You may contact New JRC's Sale's Office if you are uncertain about the
products listed in this catalog.
5.
Special care is required in designing devices, machinery or equipment which demand high levels of reliability. This is particularly important when designing critical components or systems whose failure can foreseeably result in situations that could
adversely affect health or safety. In designing such critical devices, equipment or machinery, careful consideration should be
given to amongst other things, their safety design, fail-safe design, back-up and redundancy systems, and diffusion design.
6.
The products listed in the catalog may not be appropriate for use in certain equipment where reliability is critical or where the
products may be subjected to extreme conditions. You should consult our sales office before using the products in any of the
following types of equipment.
Aerospace Equipment
Equipment Used in the Deep sea
Power Generator Control Equipment (Nuclear, Steam, Hydraulic)
Life Maintenance Medical Equipment
Fire Alarm/Intruder Detector
Vehicle Control Equipment (airplane, railroad, ship, etc.)
Various Safety devices
7.
New JRC's products have been designed and tested to function within controlled environmental conditions. Do not use
products under conditions that deviate from methods or applications specified in this catalog. Failure to employ New JRC
products in the proper applications can lead to deterioration, destruction or failure of the products. New JRC shall not be responsible for any bodily injury, fires or accident, property damage or any consequential damages resulting from misuse or
misapplication of its products. Products are sold without warranty of any kind, either express or implied, including but not limited to any implied warranty of merchantability or fitness for a particular purpose.
8.
Warning for handling Gallium and Arsenic(GaAs) Products (Applying to GaAs MMIC, Photo Reflector). This Products uses
Gallium(Ga) and Arsenic(As) which are specified as poisonous chemicals by law. For the prevention of a hazard, do not burn,
destroy, or process chemically to make them as gas or power. When the product is disposed, please follow the related regulation and do not mix this with general
industrial waste or household waste.
9.
The product specifications and descriptions listed in this catalog are subject to change at any time, without notice.
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