NJM2807 Datasheet PDF - New Japan Radio


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NJM2807
New Japan Radio

Part Number NJM2807
Description Low Dropout Voltage Regulator
Page 5 Pages

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NJM2807
Low Dropout Voltage Regulator with Reset
„ GENERAL DISCRIPTION
The NJM2807 is a low dropout voltage regulator with reset
function.
It provides up to 500mA of logic supply, and the reset function
monitors input voltage of the regulator with 1% accuracy. It is
suitable for local power supply and reset for small micro
controller and other logic chips.
„ FEATURES
z Output Voltage Accuracy
Vo ±1.0%
z Reset Voltage Accuracy
VRT ±1.0%
z Adjust reset delay time with external capacitor.
z Ripple Rejection
75dB typ. (f=1kHz)
z Output Voltage Monitor type
z Open Collector Output
z Internal Short Circuit Current Limit
z Internal Thermal Overload Protection
z Bipolar Technology
z Package Outline
TO-252-5
„ PACKAGE OUTLINE
NJM2807DL2 NJM2807DL3
„ PIN CONFIGURATION
33
12 3 4 5
NJM2806DL2
12 3 4 5
1.VOR
2.VIN
3.GND
4.VOUT
5.Cd
NJM2806DL3
„ OUTPUT VOLTAGE/ DETECTION VOLTAGE
Device Name
Output Voltage Detection Voltage
NJM2807DL*-0543
5.0V
4.3V
„ EQUIVALENT CIRCUIT
VIN VOUT
Thermal
VOR
Bandgap
Protection
Reference
GND
Cd
Ver.2004-12-24
-1-



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NJM2807
„ ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
VIN
Power Dissipation
PD
Operating Temperature
Storage Temperature
Topr
Tstg
RATINGS
+14
8 (Tc=25°C)
0.8(Ta25°C)
40+85
40+125
(Ta=25°C)
UNIT
V
W
°C
°C
„ ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.33µF, Co=1.0µF (Co=2.2µF: Vo2.4V) Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN.
Quiescent Current
Regulator Block
IQ VIN=Vo+2V, Io=0mA
Output Voltage
Output Current
Vo Io=30mA
Io Vo-0.3V
1.0%
500
Line Regulation
Load Regulation
Dropout Voltage
Vo/VIN
Vo/Io
VI_O
VIN=Vo+1VVo+6.0V, Io=30mA
Io=0500mA
Io=300mA
Ripple Rejection
RR
ein=200mVrms, f=1kHz, Io=10mA,
Vo=3.0V Version
Output Voltage Temperature
Coefficient
Output Noise Voltage
Vo/T
VNO
Ta=085°C, Io=10mA
f=10Hz80kHz, Io=10mA, Vo=3.0V Version
Reset Block
Voltage Detection
Hysteresis Voltage
Low Level Output Voltage
Output Leak Current
On time Output Current
Reset Output Delay Time
VRT
VRTH
RORL
IORH
IORL
td
VIN=HL
VIN=HLH
VIN=VRT-0.5V, RL=100k
VIN= VRT+0.5V
VIN=VRT-0.5V, RL=0
VIN=(VRT-0.5V)(VRT+0.5V), Cd=0.1µF
1.0%
VRT ×3%
5
9
Operation Voltage Limit
VOPL
VORL=0.4V
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.
330
650
0.18
75
±50
50
VRT ×5%
100
10
0.9
MAX.
430
+1.0%
0.10
0.03
0.28
+1.0%
VRT ×8%
300
0.1
11
UNIT
µA
V
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
V
mV
mV
µA
mA
ms
V
-2-
Ver.2004-12-24



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„ TIMING CHART
VIN[V]
VO
NJM2807
VO[V]
VO
VRT
VRTH
t
VOR[V]
VO
td
td
When the pull-up of the VOR is carried out to VIN through resistance.
Ver.2004-12-24
t
td
t
-3-



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NJM2807
„ TEST CIRCUIT
IQ
VIN
0.33µF
Cd
VIN
0.1µF
*1 Vo2.4V: Co=2.2µF (Ceramic)
„ TYPICALAPPLICATIONS
NJM2807
GND
VO
VOR
IOR
RL
V
VOR
1.0µF *1 IOUT
(Ceramic)
V
VOUT
VIN VIN VO
VOUT
0.33µF
Cd
0.1µF
NJM2807
GND
100k
1.0µF *2
VOR
VOR
*2 Vo2.4V: Co=2.2µF
-4-
Ver.2004-12-24




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