NJRC NJU7780U1 Low dropout voltage regulator Datasheet

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 cellular phone and other portable items.
When the ON/OFF control is used, NJU7781 has high transition
response characteristics for shunt switch.
PACKAGE OUTLINE
NJU7780/81U1
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 Short Circuit Current Limit
Internal Thermal Overload Protection
CMOS technology
Package outline
SOT-89-5
PIN CONFIGURATION
5
2
4
1. CONTROL
2. GND
3. N.C.
4. VOUT
1
2
3
5. VIN
EQUIVALENT CIRCUIT
VIN
VOUT
VIN
VOUT
Thermal
Protection
CONTROL
Output
Control
CONTROL
Vref
GND
Current
Limit
Output
Control
Vref
Current
Limit
GND
NJU7780
Ver.2004-12-22
Thermal
Protection
NJU7781
-1-
NJU7780/81
OUTPUT VOLTAGE RANK LIST (1.5V~5.0V : 0.1V step)
Device Name
VOUT
NJU778xU1-21
2.1V
NJU778xU1-25
2.5V
NJU778xU1-03
3.0V
NJU778xU1-33
3.3V
NJU778xU1-05
5.0V
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
Input Voltage
VIN
+10
V
Control Voltage
VCONT
+10(*1)
V
Power Dissipation
PD
350(*2)
mW
Operating Temperature
Topr
−40 ∼ +85
°C
Storage Temperature
Tstg
−40 ∼ +125
°C
OFF-state
Io
10
mA
Output Sink Current (*3)
(*1): When input voltage is less than +10V, the absolute maximum control voltage is equal to the input voltage.
(*2): Device itself.
(*3): This maximum rating is applied to NJU7781.
ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.1µF, Co=0.1µF, Ta=25°C)
PARAMETER
SYMBOL
Output Voltage
Vo
Input Voltage
VIN
Quiescent Current
Quiescent Current
at Control OFF
Output Current
Short Current Limit
IQ
IQ(OFF)
Io
ILIM
Line Regulation
∆Vo/∆VIN
Load Regulation
∆Vo/∆Io
Dropout Voltage
∆VI-O
Ripple Rejection
RR
Average Temperature
Coefficient of Output Voltage
Output Noise Voltage
Pull-Down Resistance
∆Vo/∆Ta
Control Voltage for ON-state
Control Voltage for OFF-state
VCONT(ON)
VCONT(OFF)
VNO
RCONT
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
-1.0%
-
+1.0%
V
-
-
9
V
Io=0mA, VCONT=VIN
-
20
40
µA
VCONT=0V
-
-
1
µA
300
-
120
-
mA
mA
-
-
0.10
%/V
-
0.18
0.015
0.25
%/mA
-
0.15
0.12
0.22
0.2
V
ein=200mVrms, f=400Hz, IO=10mA,
VO=3.0V
-
65
-
dB
Ta=0∼85°C, Io=10mA
-
±100
-
1.5
80
5
10
ppm/°
C
µVrms
MΩ
1.6
-
-
0.3
V
V
Io=30mA
Vo-0.3V
Vo=0V
VIN=Vo+1V∼Vo+6V(3.0>Vo),
VIN=Vo+1V∼Vo+9V(3.0≤Vo), Io=30mA
Io=0∼300mA
2.1 ≤ VO ≤ 2.6V
IO=150mA
2.7 ≤ VO ≤ 3.3V
3.4 ≤ VO ≤ 5.0V
F=10Hz∼80kHz, IO=10mA, VO=3.0V
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..
-2-
Ver.2004-12-22
NJU7780/81
TEST CIRCUIT
I IN
A
V IN
CIN
0.1µF
V IN
A
V
V OUT
C0
1.0µF
(ceramic)
NJU778*
I OUT
V
V OUT
I CONT
CONTROL
GND
V CONT
TYPICAL APPLICATION
1 In the case where ON/OFF Control is not required:
V IN
V IN
V OUT
V OUT
C0
1.0µF
CIN
0.1µF
NJU778*
CONTROL
GND
Connect control terminal to VIN terminal
2 In use of ON/OFF CONTROL:
V IN
V IN
CIN
0.1µF
V OUT
V OUT
C0
0.1µF
NJU778*
CONTROL
GND
State of control terminal:
•“H”→ output is enabled.
•“L” or “open” → output is disabled.
Ver.2004-12-22
-3-
NJU7780/81
ELECTRICAL CHARACTERISTICS
NJU7780/81_3.0V
Output Voltage vs. Input Voltage
3.2
NJU7780/81_3.0V
Output Voltage vs. Output Current
4
o
@:Ta=25 C
Co=1.0µF(Ceramic)
3.5
3.1
Output Voltage : Vo(V)
Output Voltage : Vo(V)
3
Io=0A
3
2.9
Io=30mA
2.5
2
1.5
1
2.8
Io=100mA
o
@:Ta=25 C
VIN=4.0V
Co=1.0µF(Ceramic)
0.5
2.7
2.7
2.8
2.9
3
3.1
3.2
3.3
0
3.4
0
100
200
Input Voltage : VIN(V)
NJU7780/81_3.0V
Ground Pin Current v.s. Output Current
400
500
600
700
NJU7780/81_3.0V
Dropout Voltage vs. Output Current
0.5
70
o
o
@:Ta=25 C
VIN=4.0V
Co=1.0µF(Ceramic)
60
300
Output Current : Io(mA)
@:Ta=25 C
Co=1.0µF(Ceramic)
50
Dropout Voltage:dVI-O (V)
Ground Pin Current : IGND (uA)
0.4
40
30
20
0.3
0.2
0.1
10
0
0
0
50
100
150
200
250
300
350
0
400
50
250
300
350
400
Output Noise Voltage : Vn(µ
µ Vrms)
120
3
Output Voltage : Vo(V)
200
140
3.5
2.5
2
1.5
1
o
@:Ta=25 C
VIN=4.0V
Co=1.0µF(Ceramic)
Io=30mA
0.5
0
0.5
1
1.5
2
Control Voltage : Vcont(V)
2.5
100
80
60
40
o
@:Ta=25 C
VIN=4.0V
LPF:80kHz
Cin=0.1µF
Co=1.0µF(Ceramic)
20
0
-4-
150
NJU7780/81_3.0V
Output Noise Voltage vs. Output Current
NJU7780/81_3.0V
Output Voltage vs. Control Voltage
4
100
Output Current:Io(mA)
Output Current : IO(mA)
3
0
0.001
0.01
0.1
1
10
100
Output Current : Io(mA)
Ver.2004-12-22
NJU7780/81
ELECTRICAL CHARACTERISTICS
NJU7780/81_3.0V
Equivalent Serise Resistance vs. Output Current
NJU7780/81_3.0V
Ripple Rejection vs. Output Current
100
100
o
@:Ta=25 C
VIN=4.0V
ein=200mVrms
Co=1.0µF(Ceramic)
o
Equivalent Serise Resistance : ESR(Ω
Ω)
90
Ripple Rejection : RR (dB)
80
70
f=1kHz
60
50
40
@:Ta=25 C
VIN=4.0V
Co=1µF(Ceramic)
Cin=0.1 µF
10
1
STABLE REGION
0.1
30
f=10kHz
20
0.001
0.02
0.01
0.1
1
10
100
1µ
100µ
10µ
Output Current : Io(mA)
100m
700m
2
@:Io=150mA
Co=1.0µF(Ceramic)
Cin=0.1µF
Control Voltage : VCONT(ON) (V)
0.25
Dropout Voltage:dVI-O (V)
10m
NJU7780/81_3.0V
Control Voltage v.s. Temperature
NJU7780/81_3.0V
Dropout Voltage v.s. Temperature
0.3
1m
Output Current : Io(A)
0.2
0.15
0.1
1.5
1
0.5
@:VIN=4.0V
Io=30mA
Co=1.0µF(Ceramic)
Cin=0.1µF
0.05
0
-50
0
50
100
0
150
-50
o
0
50
100
150
o
Temperature : Ta ( C)
Temperature : Ta ( C)
NJU7780/81_3.0V
Quiescent Current v.s. Temperature
30
NJU7780/81_3.0V
Output Voltage v.s. Temperature
4
@:VIN=4.0V
Io=30mA
Co=1.0µF(Ceramic)
Cin=0.1µF
3.5
25
Output Voltage Vo (V)
Quiescent Current : IQ (µ A)
3
20
15
10
2
1.5
1
@:VIN=4.0V
Output is open.
Co=1.0µF(Ceramic)
Cin=0.1µF
5
0.5
0
0
-50
0
50
100
o
Temperature : Ta ( C)
Ver.2004-12-22
2.5
150
-50
0
50
100
150
200
o
Temperature Ta ( C)
-5-
NJU7780/81
ELECTRICAL CHARACTERISTICS
NJU7780_3.0V
ON/OFF Transient Response
NJU7781_3.0V
ON/OFF Transient Response
10
Control Voltage
5
6
5
0
5
4
-5
3
-10
2
-15
1
Output Voltage : Vo [V]
Output Voltage
Control Voltage : Vo [V]
-20
10
Control Voltage
5
0
4
-5
Output Voltage
3
-10
2
-15
1
0
-1
0
1
2
3
Time : t [ms]
4
-25
0
-30
-1
3.5
5
3.4
4
Input Voltage
3.2
3
3.1
2
3
0
40
80
120
Time : t [ µs]
4
-30
5
160
200
@:Ta=25o C
VDD=4.0V
Co=1.0µF(Ceramic)
Io=50mA
Output Current
3.2
100
50
0
3.1
-50
Output Voltage
-100
2.9
-150
-1
2.8
-200
-2
2.7
0
o
@:Ta=25 C
VDD=4.0V
Co=1.0µF(Ceramic)
RL=100Ω
2.7
3
Time : t [ms]
3
1
Output Voltage
2.8
2
150
3.3
Output Voltage : Vo [V]
Output Voltage : Vo [V]
3.4
6
Input Voltage : V IN [V]
3.5
2.9
1
-25
NJU7780/81_3.0V
Load Transient Response
NJU7780/81_3.0V
Input Transient Response
3.3
@:Ta=25 C
VDD=4.0V
Co=1.0µF(Ceramic)
R L=100Ω
0
5
-20
o
o
@:Ta=25 C
VDD=4.0V
Co=1.0µF(Ceramic)
R L=100Ω
0
28
56
84
Time : t [ µs]
112
Output Current : Io [mA]
Output Voltage : Vo [V]
6
7
Control Voltage : Vo [V]
7
-250
140
[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.
-6-
Ver.2004-12-22
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