NJRC NJM2800-2528 Low dropout voltage regulator with reset Datasheet

NJM2800
PRELIMINARY
Low Dropout Voltage Regulator with Reset
■ GENERAL DISCRIPTION
■ PACKAGE OUTLINE
The NJM2800 is a low dropout voltage regulator with
reset function.
It provides up to 150mA of logic supply, and the reset
function monitors either input or output voltage of the
regulator with 2% accuracy.
It is suitable for local power supply and reset for small
micro controller and other logic chips.
NJM2800F**
NJM2800U**
■ PIN CONFIGURATION
■ FEATURES
• Output Voltage Accuracy
• Reset Voltage Accuracy
• Reset Hold Time
• Quiescent Current
• Open Collector Output
• Bipolar Technology
• Input Voltage Monitor type
• Package Outline
• Protection Circuit
( MTP-5 )
Vo = ±2.2%
Vreset = ±2.0%
td = 10mS±2.5mS
IQ=300µA (max.)
1
5
2
3
SOT89 (5Pin) / MTP5
1.Current limit circuit
2.Thermal overload protection circuit
4
( SOT-89 )
5
4
■ OUTPUT VOLTAGE/RESET VALIDATED VOLTAGE
PART NO
Output Voltage
NJM2800-2528
NJM2800-3342
2.5V
3.3V
1
Reset Validated
Voltage
2.8V
4.2V
2
3
■ BLOCK DIAGLAM
VIN
VO
Thermal
Protection
VOR
Bandgap
Reference
GND
Cd
1.VIN
2.GND
3.VOR
4.Cd
5.VOUT
1.VOUT
2.GND
3.Cd
4.VOR
5.VIN
NJM2800
PRELIMINARY
■ ABSOLUTE MAXIMUM RATINGS
PARAMETER
Input Voltage
SYMBOL
VIN
Power Dissipation
Operating
Storage
(Ta=25°°C)
200 (MTP5)
PD
Temperature
Temperature
RATINGS
+14
Topr
Tstg
350 (SOT-89)
−40∼+85
−40∼+125
UNIT
V
mW
°C
°C
■ ELECTRICAL CHARACTERISTICS (VIN=Vo+1V , CIN=0.1µF, Co=1µF ( Vo≤2.6V: Co=2.2µµF ) Ta=25°C )
PARAMETER
SYMBOL
IQ
CONDITION
MIN.
TYP.
MAX.
UNIT
Io=0mA
−
250
350
µA
−2.2%
150
−
200
+2.2%
V
−
−
0.10
mA
%/V
0.03
%/mA
0.18
V
Quiescent Current
Regulator Block
Output Voltage
Vo
Io=30mA
Output Current
Io
Vo-0.3V
Line Regulation
∆Vo/∆V N
V N=Vo+1V∼Vo+6V, Io=30mA
−
Load Regulation
∆Vo/∆Io
−
Dropout Voltage
∆VI_O
Io=0∼100mA
Io=60mA
−
−
0.10
Ripple Rejection
RR
Ein=200mVrms, f=1kHz, Io=10mA,Vo=3V
−
60
−
dB
Ta=0∼85°C, Io=10mA
−
±50
−
ppm/°C
VNO
f=10Hz∼100kHz, Io=10mA, Vo=3V
−
45
−
µVrms
Reset Block
Voltage Detection
VRT
V N=H→L
−2%
−
+2%
Hysteresis Voltage
VRTH
V N=H→L→H
Low
Level
Output
Output Leak Current
RORL
IORH
V N=VRT-0.5V, RL=100kΩ
V N= VRT-0.5V
On time Output Current
IORL
V N=VRT-0.5V, RL=0Ω
Output
Voltage
Temperature Coefficient
Output Noise Voltage
Reset
Output
Delay
Operation Voltage Limit
∆Vo/∆T
td
VOPL
V N=(VRT-0.5V)→ (VRT+0.5V), Cd=0.1µF
VORL=0.4V
VRT×3 VRT×5 VRT×8
100
300
−
0.1
−
−
5
−
−
9
10
11
−
The above specification is a common specification for all output voltages.
Therefore, it may be different from individual specification for a specific output voltage.
0.9
−
V
mV
mV
µA
mA
mS
V
NJM2800
PRELIMINARY
■ TIMING CHART
VIN
VRTH
VRT
VO
t
VO
VO
t
VOR
td
td
∗ VOR is the case where a pull-up is carried out to VIN through resistance.
td
t
NJM2800
PRELIMINARY
■ TEST CIRCUIT
IQ
VIN
VO
IOR
NJM2800
RL
0.1µF
VOR
Cd
VIN
1.0µF
GND
V
0.1µF
IOUT
V
VOUT
VOR
■ TYPICAL APPLICATIONS
VN
VIN
VO
NJM2800
100kΩ
0.1µF
Cd
VOUT
VOR
1.0µF
VOR
GND
0.1µF
The specifications on this data book are only given for
information, without any guarantee as regards either
mistakes or omissions. The application circuit in this data
book 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.
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