NJRC NJM2882F Low dropout voltage regulator Datasheet

NJM2881/82
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION
NJM2881/82 is a low dropout voltage regulator with ON/OFF
control.
Advanced Bipolar technology achieves low noise, high ripple
rejection and low quiescent current.
It is mounted on SOT-23-5 as small package and 1.0µF ceramic
capacitor is available. Therefore it is suitable for cellular phone,
camcorder, IC decoder, camera, and other portable items.
PACKAGE OUTLINE
NJM2881/82F
FEATURES
High Ripple Rejection
75dB typ. (f=1kHz ,Vo=3V version)
Low Output Noise Voltage Vno=30µVrms (Cp=0.01µF)
Output capacitor with 1.0µF ceramic capacitor (Vo≥2.7V)
Output Current
Io(max.)=300mA
High Precision Output
Vo±1.0%
Low Dropout Voltage
0.10V typ. (Io=100mA)
ON/OFF Control
(Active High)
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
SOT-23-5
PIN CONFIGURATION
5
4
1 2 3
1.
2.
3.
4.
5.
CONTROL (Active High)
GND
NOISE BYPASS
VOUT
VIN
NJM2881F
5
4
1 2 3
1.
2.
3.
4.
5.
VIN
GND
CONTROL (Active High)
NOISE BYPASS
VOUT
NJM2882F
EQUIVALENT CIRCUIT
VIN
V OUT
Control
Thermal
Protection
Bandgap
Reference
Noise
Bypass
GND
Ver.2004-12-22
-1-
NJM2881/82
OUTPUT VOLTAGE RANK LIST(* : Under development)
Device Name
VOUT
Device Name
NJM288*F15
1.5V
NJM288*F31
NJM288*F17
1.7V
NJM288*F33
NJM288*F18
1.8V
NJM288*F345
NJM288*F21
2.1V
NJM288*F35
NJM288*F25
2.5V
NJM288*F38
NJM288*F28
2.8V
NJM288*F04
*NJM288*F285
2.85V
NJM288*F43
NJM288*F29
2.9V
*NJM288*F47
NJM288*F03
3.0V
NJM288*F05
VOUT
3.1V
3.3V
3.45V
3.5V
3.8V
4.0V
4.3V
4.7V
5.0V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
VIN
Control Voltage
VCONT
(Ta=25°C)
RATINGS
UNIT
+14
V
+14(*1)
V
350(*2)
Power Dissipation
PD
SOT-23-5
mW
200(*3)
Operating Temperature
Topr
-40 ∼ +85
°C
Storage Temperature
Tstg
-40 ∼ +125
°C
(*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage.
(*2): Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers)
(*3): Device itself.
Operating voltage
VIN=+2.3 ∼ +6V (In case of Vo<2.1V)
ELECTRICAL CHARACTERISTICS
(Vo>2.0V version: VIN=Vo+1V, CIN=0.1µF, Co=1.0µF: Vo≥2.7V (Co=2.2µF: Vo≤2.6V), Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
Output Voltage
Vo
Quiescent Current
Quiescent Current
at Control OFF
Output Current
Line Regulation
Load Regulation
IQ
IQ(OFF)
Io
∆Vo/∆VIN
∆Vo/∆Io
Dropout Voltage
∆VI-O
Ripple Rejection
RR
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
Io=30mA
Io=0mA, except Icont
VCONT=0V
-1.0%
-
+1.0%
V
-
120
180
µA
-
-
100
nA
Vo-0.3V
300
-
400
-
0.10
0.03
mA
%/V
%/mA
-
0.10
0.18
V
-
75
-
dB
-
± 50
-
ppm/°C
VIN=Vo+1V ∼ Vo+6V, Io=30mA
Io=0 ∼ 300mA
Io=100mA
ein=200mVrms,f=1kHz,Io=10mA,
Vo=3V version
Ta=0 ∼ 85°C, Io=10mA
Average Temperature
Coefficient of Output
Voltage
Output Noise Voltage
Control Voltage for ON-state
VCONT(ON)
1.6
30
-
-
µVrms
V
Control Voltage for OFF-state
VCONT(OFF)
-
-
0.6
V
-2-
∆Vo/∆Ta
VNO
f=10Hz ∼ 80kHz, Io=10mA, Vo=3V version
Ver.2004-12-22
NJM2881/82
ELECTRICAL CHARACTERISTICS
(Vo≤2.0V version: VIN=Vo+1V, CIN=0.1µF, Co=2.2µF: Vo≥1.9V (Co=4.7µF: Vo≤1.8V), Cp=0.01µF, Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
TYP.
MAX.
UNIT
-1.0%
-
+1.0%
V
Output Voltage
Vo
Io=30mA
Quiescent Current
Quiescent Current
at Control OFF
Output Current
Line Regulation
Load Regulation
IQ
Io=0mA, except ICONT
-
120
180
µA
VCONT=0V
-
-
100
nA
300
-
400
-
0.10
0.03
mA
%/V
%/mA
-
80
-
dB
-
± 50
-
ppm/°C
-
20
-
1.6
-
-
0.6
µVrms
V
V
IQ(OFF)
Io
∆Vo/∆VIN
∆Vo/∆Io
Ripple Rejection
RR
Average Temperature
Coefficient of Output Voltage
Output Noise Voltage
∆Vo/∆Ta
Control Voltage for ON-state
Control Voltage for OFF-state
VCONT(ON)
VCONT(OFF)
Vo-0.3V
VIN=Vo+1V ∼ Vo+6V, Io=30mA
Io=0 ∼ 300mA
ein=200mVrms,f=1kHz,Io=10mA,
Vo=1.8V version
Ta=0 ∼ 85°C, Io=10mA
f=10Hz ∼ 80kHz, Io=10mA, Vo=1.8V version
VNO
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.
TEST CIRCUIT
IIN
A
VIN
VOUT
IOUT
VIN
0.1µF
A
ICONT
NJM2881/82
CONTROL
V
VOUT
1.0µF *4
(ceramic)
NOISE
BYPASS
Cp=0.01µF
V
VCONT
GND
*4 1.9V ≤ Vo ≤ 2.6V version: Co=2.2µF(ceramic)
Vo ≤ 1.8V version: Co=4.7µF(ceramic)
Ver.2004-12-22
-3-
NJM2881/82
TYPICAL APPLICATION
1 In the case where ON/OFF Control is not required:
VIN
VOUT
VOUT
VIN
0.1µF
1.0µF *5
NJM2881/82
R
(0∼300kΩ)
NOISE
BYPASS
CONTROL
Cp=0.01µF
GND
*5 1.9V ≤ Vo ≤ 2.6V version: Co=2.2µF
Vo ≤ 1.8V version: Co=4.7µF
Connect control terminal to VIN terminal
The quiescent current can be reduced by using a resistance “R”. Instead, it increases the minimum operating
voltage. For further information, please refer to Figure “Output Voltage vs. Control Voltage”.
2 In use of ON/OFF CONTROL:
VIN
VIN
VOUT
VOUT
1.0µF *5
NJM2881/82
0.1µF
R
CONTROL
NOISE
BYPASS
Cp=0.01µF
GND
*5 1.9V ≤ Vo ≤ 2.6V version: Co=2.2µF
Vo ≤ 1.8V version: Co=4.7µF
State of control terminal:
•“H”→ output is enabled.
•“L” or “open” → output is disabled.
Noise bypass Capacitance Cp
Noise bypass capacitance Cp reduces noise generated by band-gap reference circuit.
Noise level and ripple rejection will be improved when larger Cp is used.
Use of smaller Cp value may cause oscillation.
Use the Cp value of 0.01uF greater to avoid the problem.
-4-
Ver.2004-12-22
NJM2881/82
POWER DISSIPATION vs. AMBIENT TEMPERATURE
NJM2881/82F Power Dissipation
(Topr=-40~+85℃,Tj=125℃,PD =200mW(Ta≦25℃))
Power Dissipation PD (mW)
500
On Board(114.3×76.2×1.6mm, FR-4)
400
300
Device itself
200
100
0
-50
-25
0
25
50
75
100
Ambient Temperature Ta(℃)
Ver.2004-12-22
-5-
NJM2881/82
ELECTRICAL CHARACTERISTICS
NJM2881/82_3.0V
Output Voltage vs. Output Current
NJM2881/82_3.0V
Output Voltage v.s. Input Voltage
3.5
o
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
3
3.2
Output Voltage :Vo [V]
Output Voltage :Vo [V]
3.4
Io=0A
3
2.8
Io=100mA
2.5
2
1.5
1
o
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
0.5
Io=300mA
2.6
0
2.6
2.8
3
3.2
3.4
0
100
200
Input Voltage :Vin [V]
NJM2881/82_3.0V
Ground Pin Current vs. Output Voltage
400
500
600
NJM2881/82_3.0V
Dropout Voltage vs. Output Current
20
0.3
o
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
o
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
0.25
15
Dropout Voltage :dVi-o [V]
Ground Pin Current :IGND [mA]
300
Output Current :Io [mA]
10
5
0.2
0.15
0.1
0.05
0
0
0
100
200
300
400
500
0
100
200
300
400
500
Output Current :Io [mA]
Output Current :Io [mA]
NJM2881/82_3.0V
Control Current v.s. Control Voltage
NJM2881/82_3.0V
Output Voltage v.s. Control Voltage
4
20
o
3.5
15
Output Voltage :Vo [V]
Control Current :Icont [uA]
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
10
Rc=100kΩ
Rc=50kΩ
Rc=0Ω
5
3
Rc=0Ω
2.5
Rc=50kΩ
2
Rc=100kΩ
1.5
1
o
@:Ta=25 C
Vin=4.0V
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
0.5
0
0
0
0.5
1
1.5
2
Control Voltage :Vcont [V]
-6-
2.5
3
0
0.5
1
1.5
2
2.5
3
Control Voltage :Vcont [V]
Ver.2004-12-22
NJM2881/82
ELECTRICAL CHARACTERISTICS
NJM2881/82_3.0V
Peak Output Current vs. Input Voltage
NJM2881/82_3.0V
Load Regulation vs. Output Current
1000
0
-10
Peak Output Current :Io MAX [mA]
Load Regulation :dVo/dIo [mV]
800
-20
-30
-40
o
@:Ta=25 C
VIN=4V
Co=1.0uF(Ceramic)
Cp=0.01uF
-50
600
400
200
o
@:Ta=25 C
Co=1.0uF(Ceramic)
Cp=0.01uF
-60
0
0
100
200
300
400
500
4
6
8
Output Current :Io [mA]
10
NJM2881/82_3.0V
Quiescent Current v.s. Input Voltage
2000
200
Output Noise Voltage : Vn(uVrms)
Quiescent Current : Iq [uA]
o
@:Ta=25 C
VIN=4V
Co=1.0uF (Ceramic)
Io=10mA
1200
800
400
0
0
5
10
150
100
50
0
0.000001
15
0.01
0.1
Io=0mA
80
Ripple Rejection Ratio :RR [dB]
Output Noise Voltage :Vn [uVrms]
@:Ta=25 C
VIN=4V
Co=1.0uF(Ceramic)
Cp=0.01uF
40
20
Io=10mA
Io=30mA
60
40
o
@:Ta=25 C
VIN=4.0V
ein=200mVrms
Co=1.0uF(Ceramic)
Cp=0.01uF
20
0
0.01
0.1
1
Output Current :Io [mA]
Ver.2004-12-22
0.001
100
60
0
0.001
0.0001
NJM2881/82_3.0V
Ripple Rejection Ratio v.s. Frequency
NJM2881/82_3.0V
Output Noise Voltage vs. Output Current
o
80
0.00001
Noise Bypass Capacitor : Cp(uF)
Input Voltage :Vin [V]
100
14
NJM2881/82_3.0V
Output Noise Voltage vs. Noise Bypass Capacitor
o
@:Ta=25 C
Output is open.
Co=1.0uF(Ceramic)
Cp=0.01uF
including Icont
1600
12
Input Voltage :Vin [V]
10
100
10
10
100
1k
1000
10k4
10
5
100k
10
Frequency :f [Hz]
-7-
NJM2881/82
ELECTRICAL CHARACTERISTICS
NJM2881/82_3.0V
Equivalent Series Resistance vs. Output Current
NJM2881/82_3.0V
Ripple Rejection vs. Output Current
100
100
o
Equivalent Series Resistance :ESR [ohm]
f=1kHz
Ripple Rejection : RR (dB)
80
60
f=10kHz
40
o
@:Ta=25 C
VIN=4.0V
ein=200mVrms
Co=1.0uF(Ceramic)
Cp=0.01uF
20
0
0.001
@:Ta=25 C
VIN=4V
Co=1.0uF(Ceramic)
Cp=0.01uF
10
STABLE REGION
1
0.1
0.02
0.01
0.1
1
10
100
0.001
1000
0.01
0.1
Output Current : Io(mA)
1
NJM2881/82_3.0V
ƒf [ƒ^
Dropout Voltage
v.s.1Temperature
100
1000
NJM2881/82_3.0V
Control Voltage v.s. Temperature
2
0.3
@:VIN=4V
Output is open.
Co=1.0uF(Ceramic)
Cp=0.01uF
@:Io=100mA
Co=1.0uF(Ceramic)
Cp=0.01uF
Control Voltage :Vcont-off [V]
0.25
Dropout Voltage : Vi-o [V]
10
Output Current :Io [mA]
0.2
0.15
0.1
0.05
0
50
100
1
0.5
0
-50
0
-50
1.5
150
0
50
100
150
o
o
Temperature :Ta [ C]
Temperature :Ta [ C]
NJM2881/82_3.0V
Output Voltage v.s. Temperature
NJM2881/82_3.0V
Quiescent Current v.s. Temperature
3.1
300
@:VIN=4V
Io=30mA
Co=1.0uF(Ceramic)
Cp=0.01uF
@:VIN=4V
Output is open
Co=1.0uF(Ceramic)
Cp=0.01uF
Include Icont
250
Quiescent Current : Iq [uA]
Output Voltage :Vo [V]
3.05
3
2.95
200
150
100
50
2.9
0
-50
0
50
100
o
Temperature :Ta [ C]
-8-
150
-50
0
50
100
150
o
Temperature :Ta [ C]
Ver.2004-12-22
NJM2881/82
ELECTRICAL CHARACTERISTICS
NJM2881/82_3.0V
Load Regulation v.s. Temperature
NJM2881/82_3.0V
Line Regulation v.s. Temperature
0.03
0.2
@:VIN=4.0V
Io=0-100mA
Co=1.0uF(Ceramic)
Cp=0.01uF
0.025
Load Regulation :dVo/dIo [%/mA]
Line Regulation :dVo/dVin [%/V]
@:VIN=4.0-9.0V
Io=30mA
Co=1.0uF(Ceramic)
Cp=0.01uF
0.1
0
-0.1
0.02
0.015
0.01
0.005
-0.2
0
-50
0
50
100
150
-50
0
50
o
150
Temperature :Ta [ C]
NJM2881/82_3.0V
Short Circuit Current v.s. Temperature
NJM2881/82_3.0V
Output Voltage v.s. Temperature
200
3.5
@:VIN=4.0V
Output is short to ground.
Co=1.0uF(Ceramic)
Cp=0.01uF
Short Circuit Current :Isc [mA]
3
2.5
2
1.5
1
@:VIN=4.0V
Io=30mA
Co=1.0uF(Ceramic)
Cp=0.01uF
0.5
150
100
50
0
0
-50
0
50
100
150
200
-50
0
o
50
100
150
o
Temperature :Ta [ C]
Temperature :Ta [ C]
NJM2881_3.0V
ON/OFF Transient Response
NJM2881_3.0V
ON/OFF Transient Response without Load
20
@:Ta=25oC
VDD=4.0V
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=0mA
10
10
Control Voltage
8
@:Ta=25 C
VDD=4.0V
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
15
5
6
0
-5
4
Output Voltage
Output Voltage : Vo [V]
Output Voltage : Vo [V]
10
20
o
12
Control Voltage : Vo [V]
12
15
10
Control Voltage
8
5
6
0
-5
4
Output Voltage
-10
2
Control Voltage : Vo [V]
Output Voltage :Vo [V]
100
o
Temperature :Ta [ C]
-10
2
-15
0
-15
0
-20
0
Ver.2004-12-22
1
2
3
Time : t [S]
4
5
-20
0
4
8
12
Time : t [mS]
16
20
-9-
NJM2881/82
ELECTRICAL CHARACTERISTICS
NJM2881/82_3.0V
Load Transient Response
NJM2881/82_3.0V
Input Transient Response
3.12
400
3.12
10
350
3.08
300
3.06
250
3.04
200
3.02
150
Output Voltage
3
100
2.98
2.96
0
40
80
120
Time : t [uS]
160
200
3.1
3.08
8
6
Output Voltage : Vo [V]
Output Current
Output Current : Io [mA]
3.1
Output Voltage : Vo [V]
o
@:Ta=25 C
VDD=4.0V
Co=1.0uF(Ceramic)
Cp=0.01uF
Io=30mA
Input Voltage
3.06
4
3.04
2
3.02
Output Voltage
Input Voltage : VIN [V]
o
@:Ta=25 C
VDD=4.0V
Co=1.0uF(Ceramic)
Cp=0.01uF
0
3
50
2.98
0
2.96
-2
-4
0
40
80
120
Time : t [uS]
160
200
[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.
- 10 -
Ver.2004-12-22
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