Document
NJU7741/44
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DISCRIPTION NJU7741/44 is a low dropout voltage regulator with ON/OFF control and Output shunt switch. Advanced CMOS technology achieves high ripple rejection and ultra low quiescent current. It is suitable for reset small micro controller and other logic chips. NJU7744 features shunt switch which improves turn off response of output voltage when ON/OFF control is used.
PACKAGE OUTLINE NJU7741/44F
FEATURES
Ultra Low quiescent Current Iq=1.5 A typ.(IO=0mA) Output capacitor with 0.1uF ceramic capacitor
Output Current High Precision Output Low Dropout Voltage With ON/OFF Control
IO(max.)=100mA VO 1.0% 0.17V typ. (IO=60mA, VO=3V version) (Active High)
With Output Shunt Switch Only NJU7744
Internal Short Circuit Current Limit
CMOS Technology
Package Outline
SOT-23-5
PIN CONFIGURATION
CONTROL 1 GND 2 NC 3
5 VIN 4 VOUT
NJU7741/44F
BLOCK DIAGRAM
VIN CONTROL
Output Control
VOUT
VIN
CONTROL
Output Control
VOUT
GND
Vref
Current Limit
NJU7741
GND
Vref
Current Limit
NJU7744
Ver.2016-02-17
-1-
NJU7741/44
OUTPUT VOLTAGE RANK LIST
DEVICE NAME VOUT DEVICE NAME NJU774*F15 1.5V NJU774*F28 NJU774*F18 1.8V NJU774*F29 NJU774*F19 1.9V NJU774*F03 NJU774*F02 2.0V NJU774*F31 NJU774*F25 2.5V NJU774*F33 NJU774*F27 2.7V NJU774*F37
VOUT
2.8V 2.9V 3.0V 3.1V 3.3V 3.7V
DEVICE NAME
NJU774*F04 NJU774*F45 NJU774*F05 NJU774*F06
VOUT
4.0V 4.5V 5.0V 6.0V
ABSOLUTE MAXIMUM RATINGS
(Ta=25 C)
PARAMETER Input Voltage Control Voltage
Power Dissipation
Operating Temperature Storage Temperature Output Sink Current at OFF-state(*4)
SYMBOL VIN
VCONT
PD
Topr Tstg
IO
RATINGS
+10
+10(*1)
SOT-23-5
380(*2) 510(*3)
−40 +85
−40 +125
10
UNIT V V
mW
C C
mA
(*1) : When input voltage is less than +10V, the absolute maximum control voltage is equal to the input voltage.
(*2) : Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 2Layers)
(*3) : Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 4Layers), internal Cu area: 74.2x74.2mm
(*4) : This maximum rating is applied to NJU7744.
ELECTRICAL CHARACTERISTICS (VIN=VO+1V, CIN=0.1 F, CO=0.1 F, Ta=25 C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Output Voltage
VO IO=30mA
−1.0% – +1.0% V
Input Voltage
Quiescent Current Quiescent Current at Control OFF
VIN IQ
IQ(OFF)
IO =0mA, VCONT=VIN,Except ICONT VCONT=0V
––9V
– 1.5 3.5
A
– 0.1 1
A
Output Current Short Circuit Limit
Line Regulation
Load Regulation
IO ILIM
VO / VIN
VO / VO
VO−0.3V
VO=0V
VIN= VO+1V VO+6.0V(VO<3.0V) VIN= VO+1V 9.0V(VO≥3.0V), IO=30mA
Io=0 100mA
Io=40mA
1.5V≤VO≤2.0V
2.0V≤VO≤2.4V
100 – – 25
– mA – mA
– – 0.30 %/V
– – 0.15 %/mA – 0.19 0.60 V – 0.19 0.29 V
Dropout Voltage
VI-O Io=60mA
2.5V≤VO≤2.7V 2.8V≤VO≤3.3V
– 0.18 0.27 V – 0.17 0.26 V
Average Temperature Coefficient of Output Voltage
VO / Ta
3.4V≤VO≤5.0V 5.1V≤VO≤6.0V
Ta=0 85 C, IO=10mA
– 0.16 0.24 V – 0.15 0.22 V
– 100 – ppm/ C
Pull-down Resistance Control Voltage for ON-State
RCONT VCONT(ON)
2 5 10 M 1.6 – VIN V
Control Voltage for OFF-State
Pull-down Resistance at OFF-state(note 5)
VCONT(OFF) RO(OFF)
VCONT=0V (VO=3.0V Version)
0 – 0.3 V – 300 –
(*5) This electrical characteristics is applied to NJU7744.
The above specification is a common specification for all voltages.
Therefore, it may be different from the individual specification for a specific output Voltage.
-2-
Ver.2016-02-17
NJU7741/44
THERMAL CHARACTERISTICS
PARAMETER
Junction-to-ambient thermal resistance Junction-to-Top of package characterization parameter
SYMBOL ja jt
VALUE
260(*6) 195(*7) 70(*6) 60(*7)
UNIT C/W C/W
(*6) : Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 2Layers)
(*7) : Mounted on glass epoxy board. (76.2×114.3×1.6mm:based on EIA/JDEC standard, 4Layers), internal Cu area: 74.2x74.2mm
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJU7741/44F Power Dissipation (Topr=-40~+85℃,Tj=125℃)
600
Power Dissipation PD(mW)
500 on 4 layers board
400
300 on 2 layers board
200
100
0 -50
-25
0 25 50 Ambient Temperature Ta(℃)
75 100
TEST CIRCUIT
A IIN
VIN VOUT
VIN
0.1 F
NJU7741/44
A ICONT CONTROL
V VCONT
GND
IOUT V VOUT
0.1 F (Ceramic)
Ver.2016-02-17
-3-
NJU7741/44
TYPICAL APPLICATION
In case that ON/OFF Control is not required:
VIN VIN
VOUT
CIN 0.1 F
NJU7741/44
VOUT
CO 0.1 F
CONTROL GND
Connect control terminal to VIN pin.
In use of ON/OFF Control VIN
CIN 0.1 F
VIN VOUT NJU7741/44
VOUT
CO 0.1 F
CONTROL GND
State of control pin: ● “H” output is enabled. ● “L” or “open” output is disabled.
*Transient response characteristic of Output Voltage In general, overshoot or undershoot of output voltage may occur due to the transient response characteristic of an
internal error amplifier. Especially, low current consumption regulator may have overshoot or undershoot due .