Document
NJU7780/81
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION The NJU7780/81 is a low dropout voltage regulator with ON/OFF
Control. Advanced CMOS technology achieves low quiescent current. It is suitable for battery operating applications. NJU7781 features shunt switch which improves turn off response
of output voltage when ON/OFF control is used.
FEATURES
High Ripple Rejection
65dB typ. (f=400Hz, Vo=3V)
Low quiescent Current
Iq=20μA (Io=0mA, VCONT=VIN)
Output capacitor with 1.0μF ceramic capacitor
Output Current
Io(max)=300mA
High Precision Output
Vo±1.0%
Low Dropout Voltage
0.15V typ. (Io=150mA,Vo=3.0V)
ON/OFF Control
(Active High)
Shunt Switch
Only NJU7781
Internal Over Current Protection
Internal Thermal Overload Protection
CMOS technology
Package outline
SOT-89-5
PIN CONFIGURATION
PACKAGE OUTLINE NJU7780/81U1
CONTROL 1 GND 2 NC 3
5 VIN 2 GND 4 VOUT
BLOCK DIAGRAM
VIN CONTROL
Output Control
Thermal Protection
VOUT
VIN
CONTROL
Output Control
Thermal Protection
VOUT
GND
Current Vref Limit
NJU7780
GND
Current Vref Limit
NJU7781
Ver.2015-11-16
-1-
NJU7780/81
OUTPUT VOLTAGE RANK LIST
Device Name NJU778xU1-15 NJU778xU1-18
VOUT 1.5V 1.8V
NJU778xU1-21 NJU778xU1-25
2.1V 2.5V
Device Name NJU778xU1-28 NJU778xU1-29 NJU778xU1-03 NJU778xU1-33
VOUT 2.8V 2.9V 3.0V 3.3V
Device Name NJU778xU1-04 NJU778xU1-05
VOUT 4.0V 5.0V
ABSOLUTE MAXIMUM RATINGS
(Ta=25 C)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage Control Voltage
Power Dissipation
Operating Temperature Storage Temperature OFF-state Output Sink Current (*5)
VIN VCONT
PD
Topr Tstg Io
+10 +10(*1) 350(*2) 500(*3) 765(*4) 40 +85 40 +125
10
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): Device itself. (*3): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2)
(*4): 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 hole to a board based on JEDEC standard JESD51-5)
(*5): This maximum rating is applied to NJU7781.
Input Voltage Range VIN=+2.3 +9V (In case of Vo<2.1V version)
-2-
Ver.2015-11-16
NJU7780/81
ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.1μF, Co=0.1μF, Ta=25 C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
Output Voltage
Vo Io=30mA
-1.0%
Input Voltage
VIN
-
Quiescent Current Quiescent Current at Control OFF
Output Current
IQ IQ(OFF)
Io
Io=0mA, VCONT=VIN
VCONT=0V
Vo - 0.1V(Vo<2.1V) Vo - 0.3V(Vo 2.1V)
-
300
Short Current Limit Line Regulation Load Regulation
ILIM Vo/ VIN Vo/ Io
Vo=0V
VIN=Vo+1V Vo+6V(Vo<3.0), VIN=Vo+1V Vo+9V(Vo≥3.0), Io=30mA Io=0 300mA
-
2.1 ≤ VO ≤ 2.6V
-
Dropout Voltage(*6)
ΔVI-O
IO=150mA
2.7 ≤ VO ≤ 3.3V 3.4 ≤ VO ≤ 5.0V
-
Ripple Rejection
Average Temperature Coefficient of Output Voltage
RR Vo/ Ta
ein=200mVrms, f=400Hz, IO=10mA, VO=3.0V
Ta=0 85 C, Io=10mA
-
Output Noise Voltage
VNO f=10Hz 80kHz, IO=10mA, VO=3.0V
-
Pull-Down Resistance
RCONT
1.5
Control Voltage for ON-state
VCONT(ON)
1.6
Control Voltage for OFF-state
Pull-down Resistance at OFF-state(*7)
VCONT(OFF) RO(OFF)
VCONT=0V (VO=3.0V Version)
–
(*6): The output voltage excludes under 2.1V.
(*7) This electrical characteristics is applied to NJU7781.
The above specification is a common specification for all output voltages.
Therefore, it may be different from the individual specification for a specific output voltage.
TYP.
20
-
-
120
-
0.18 0.15 0.12 65
100
80 5 -
190
MAX.
+1.0% 9 40
1
UNIT
V V
μA
μA
-
-
0.10
0.015 0.25 0.22 0.2
-
-
10 0.3
–
mA mA %/V %/mA
V
dB ppm/
C Vrms MΩ V V
Ver.2015-11-16
-3-
NJU7780/81
THERMAL CHARACTERISTICS
PARAMETER
SYMBOL
VALUE
UNIT
Junction-to-ambient thermal resistance
ja
200 (*8) 130 (*9)
C/W
Junction-to-Top of package characterization parameter
jt
67 (*8) 65 (*9)
C/W
(*8): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard size, 2Layers, Cu area 100mm2)
(*9): 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 hole to a board based on JEDEC standard JESD51-5)
POWER DISSIPATION vs. AMBIENT TEMPERATURE
Power Dissipation PD(mW)
1000 90 0 80 0 70 0 60 0 50 0 40 0 30 0 20 0 10 0 0 -5 0
NJU7780/81U1 PowerDissipation (Topr=-40~+85°C,Tj=125°C)
on 4 layers board
on 2 layers board Device itself
-25 0 25 50
Temperature : Ta( C)
75
100
-4-
Ver.2015-11-16
TEST CIRCUIT
I IN
A
V IN
VIN VOUT
CIN 0.1 F
NJU778*
A ICONT
CONTROL
V VCONT
GND
NJU7780/81
C0 1.0 F*10 (ceramic)
VI OUT
V OUT
*8 : Vo 2.0V version, Co=2.2μF(Ceramic)
TYPICAL APPLICATION In the case where ON/OFF Control is not required:
VIN VIN
V OUT
CIN 0.1 F
NJU778*
CONTROL GND
*11: Vo 2.0V version, Co=2.2μF
Connect control pin to VIN pin
In use of ON/OFF CONTROL:
V IN
CIN 0.1 F
.