Dropout Regulator. NJM2841 Datasheet

NJM2841 Regulator. Datasheet pdf. Equivalent

NJM2841 Datasheet
Recommendation NJM2841 Datasheet
Part NJM2841
Description Low Output Voltage Low Dropout Regulator
Feature NJM2841; NJM2841 Low Output Voltage Low Dropout Regulator GENERAL DESCRIPTION The NJM2841 is a low output v.
Manufacture New Japan Radio
Datasheet
Download NJM2841 Datasheet




New Japan Radio NJM2841
NJM2841
Low Output Voltage Low Dropout Regulator
GENERAL DESCRIPTION
The NJM2841 is a low output voltage, low drop out
regulators.
It delivers up to 500mA output current with the output
voltage of 0.8 to 2.5V.
The use of an external bias voltage can improve the
transient response and the ripple rejection characteristics
while maintaining minimum input to output voltage.
PACKAGE OUTLINE
NJM2841F
NJM2841U2
FEATURES
Output Voltage Range
0.8V to 2.5V
High Ripple Rejection
Output Noise Voltage
Output Current
High Precision Output
Dual Supply Voltage Type
High Stability for Load
86 dB typ. (VO=1.2V version )
VNO=40µVrms( VO=1.2V version )
IO(min)=500mA
VO±1.0%
VIN, VBIAS(sequence free)
0.002%/mA (max)
Output Capacitor with 4.7µF ceramic capacitor
Low Dropout Voltage
ON/OFF Control
0.1V typ. @IO=300mA
Built-in Thermal Overload Protection and Over Current Protection
Bipolar Technology
Package Outline
SOT-23-5, SOT-89-5
PIN CONNECTION
54
12 3
NJM2841F
1. CONTROL
2. GND
3. VOUT
4. VIN
5. VBIAS
524
123
1. VOUT
2. GND
3. CONTROL
4. VBIAS
5. VIN
NJM2841U2
BLOCK DIAGRAM
VIN
VBIAS
CONTROL
Bandgap
Reference
Thermal
Protection
VOUT
GND
Over Current
Protection
Ver.2013-08-01
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New Japan Radio NJM2841
NJM2841
OUTPUT VOLTAGE RANK LIST
Device Name Vout Device Name
NJM2841F008
0.8V
NJM2841F017
NJM2841F009
0.9V
NJM2841F018
NJM2841F010
1.0V
NJM2841F019
NJM2841F011
1.1V
NJM2841F020
NJM2841F012
1.2V
NJM2841F021
NJM2841F013
1.3V
NJM2841F022
NJM2841F014
1.4V
NJM2841F023
NJM2841F015
1.5V
NJM2841F024
NJM2841F016
1.6V
NJM2841F025
Output Voltage Range: 0.8V to 2.5V (0.1V step)
Vout
1.7V
1.8V
1.9V
2.0V
2.1V
2.2V
2.3V
2.4V
2.5V
Device Name
NJM2841U2-012
Vout
1.2V
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
SYNBOL
RATINGS
UNIT
Input Voltage
Bias Voltage
Control Voltage
Power Dissipation
Operating Temperature
Storage Temperature
VIN
VBIAS
VCONT
PD
Topr
Tstg
+10
+10
+10
SOT-23-5
480(*1)
640(*2)
SOT-89-5
625(*3)
2400(*4)
-40 +85
-50 +150
V
V
V
mW
°C
°C
(*1): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard, 2Layers)
(*2): Mounted on glass epoxy board. (76.2 114.3 1.6mm:based on EIA/JDEC standard, 4Layers), internal Cu area: 74.2 74.2mm
(*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)
BIAS VOLTAGE RANGE
VBIAS= +2.5V to +10V (VO<1.5V)
VBIAS= VO+1V to +10V (VO1.5V)
-2-
Ver.2013-08-01



New Japan Radio NJM2841
NJM2841
ELECTRICAL CHARACTERISTICS
(VBIAS=2.5V(Vo1.5V : VBIAS=Vo+1V), VIN=Vo+1V, CBIAS=0.1µF, CIN=4.7µF, Co=4.7µF, Ta=25˚C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Output Voltage
Unloaded Bias Current
Unloaded Input Current
Bias Current at Control OFF
Input Current at Control OFF
Output Current
Line Regulation 1 (VBIAS)
Line Regulation 2 (VIN)
Load Regulation
Dropout Voltage
Ripple Rejection Ratio 1 (VBIAS)
Ripple Rejection Ratio 2 (VIN)
Average Temperature Coefficient
of Output Voltage
Output Noise Voltage
Control Current
Control Voltage for ON-state
Control Voltage for OFF-state
Bias Voltage
Input Voltage
VO
IBIAS
IIN
IBIAS(OFF)
IIN(OFF)
IO
VO/VBIA
S
VO/VIN
VO/IO
VI-O
RR1(VBIAS)
RR2(VIN)
VO/Ta
VNO
ICONT
ICONT(ON)
VCONT(ON)
VBIAS
VIN
IO=30mA
IO=0mA, except ICONT
IO=0mA, except ICONT
VCONT=0V
VCONT=0V
VO x 0.9V
VBIAS=2.5V to VO+6V(VO<1.5V)
VBIAS=VO+1V to VO+6V(VO1.5V)
IO=30mA
VIN=VO+1V to VO+6V, IO=30mA
IO=30 to 500mA
IO=300mA
VBIAS=3.5V,
eBIAS=200mVrms, f=1kHz,
IO=10mA
eIN=200mVrms, f=1kHz,
IO=10mA
Ta=0 to +85°C, IO=10mA
f=10Hz to 80kHz, IO=10mA
VCONT=1.6V
-1.0% - +1.0%
- 180 300
- - 20
- - 100
- - 100
500 650
-
V
µA
µA
nA
nA
mA
- - 0.10 %/V
- - 0.10 %/V
- - 0.002 %/mA
- 0.10 0.18 V
Refer to Table 1
dB
Refer to Table 1
- ±50 -
Refer to Table 1
- 3 12
1.6 -
-
- - 0.6
- - 10
- -9
dB
ppm/°C
µVrms
µA
V
V
V
V
Table1
PARAMETER
Ripple Rejection Ratio 1 (VBIAS)
Ripple Rejection Ratio 2 (VIN)
Output Noise Voltage
SYMBOL
RR(VBIAS)
RR(VIN)
VNO
TEST CONDITION
VO=0.8V
VBIAS=3.5V,
eBIAS=200mVrms,
f=1kHz, Io=10mA
VO=0.9V
VO=1.0V
VO=1.2V
VBIAS=4.5V,
eBIAS=200mVrms,
f=1kHz, Io=10mA
VO=1.5V
VO=2.5V
VO=0.8V
VO=0.9V
ein=200mVrms,
f=1kHz, Io=10mA
VO=1.0V
VO=1.2V
VO=1.5V
VO=2.5V
VO=0.8V
VO=0.9V
f=10Hz80kHz,
VO=1.0V
Io=10mA,
VO=1.2V
VO=1.5V
VO=2.5V
MIN.
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
TYP.
80
80
79
77
75
70
87
87
87
86
85
75
27
30
34
40
48
75
MAX.
-
-
-
-
-
UNIT
dB
-
-
-
-
-
dB
-
-
-
-
-
-
µVrms
-
-
Ver.2013-08-01
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