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
Output Voltage Accuracy
Vo
±1.0%
Reset Voltage Accuracy
V
RT
±1.0%
Adjust reset delay time with external capacitor.
Ripple Rejection
75dB typ. (f=1kHz)
Output Voltage Monitor type
Open Collector Output
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
TO-252-5
PACKAGE OUTLINE
NJM2807DL2
NJM2807DL3
PIN CONFIGURATION
3
3
123 45
123 45
1.V
OR
2.V
IN
3.GND
4.V
OUT
5.Cd
NJM2806DL2
NJM2806DL3
OUTPUT VOLTAGE/ DETECTION VOLTAGE
Device Name
Output Voltage
Detection Voltage
NJM2807DL*-0543
5.0V
4.3V
EQUIVALENT CIRCUIT
V
IN
V
OR
Thermal
Protection
V
OUT
Bandgap
Reference
GND
Cd
Ver.2004-12-24
-1-
NJM2807
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
Power Dissipation
Operating Temperature
Storage Temperature
V
IN
P
D
Topr
Tstg
(Ta=25
°
C)
UNIT
V
W
RATINGS
+14
8 (Tc=25
°
C)
0.8(Ta≤25
°
C)
−
40
∼
+85
−
40
∼
+125
°
C
°
C
ELECTRICAL CHARACTERISTICS
(V
IN
=Vo+1V, C
IN
=0.33
µ
F, Co=1.0
µ
F
(
Co=2.2
µ
F: Vo≤2.4V
)
Ta=25
°
C)
PARAMETER
SYMBOL
TEST CONDITION
Quiescent Current
V
IN
=Vo+2V, Io=0mA
I
Q
Regulator Block
Output Voltage
Output Current
Line Regulation
Load Regulation
Dropout Voltage
Ripple Rejection
Output Voltage Temperature
Coefficient
Output Noise Voltage
Reset Block
Voltage Detection
Hysteresis Voltage
Low Level Output Voltage
Output Leak Current
On time Output Current
Reset Output Delay Time
Operation Voltage Limit
MIN.
−
−1.0%
500
−
−
−
−
−
−
TYP.
330
−
650
−
−
0.18
75
±50
50
MAX.
430
+1.0%
−
0.10
0.03
0.28
−
−
−
UNIT
µA
V
mA
%/V
%/mA
V
dB
ppm/°C
µVrms
V
mV
mV
µA
mA
ms
V
Vo
Io
∆Vo/∆V
IN
∆Vo/∆Io
∆V
I_O
RR
∆Vo/∆T
V
NO
V
RT
V
RTH
R
ORL
I
ORH
I
ORL
t
d
V
OPL
Io=30mA
Vo-0.3V
V
IN
=Vo+1V∼Vo+6.0V, Io=30mA
Io=0∼500mA
Io=300mA
ein=200mVrms, f=1kHz, Io=10mA,
Vo=3.0V Version
Ta=0∼85°C, Io=10mA
f=10Hz∼80kHz, Io=10mA, Vo=3.0V Version
V
IN
=H→L
V
IN
=H→L→H
V
IN
=V
RT
-0.5V, R
L
=100kΩ
V
IN
= V
RT
+0.5V
V
IN
=V
RT
-0.5V, R
L
=0Ω
V
IN
=(V
RT
-0.5V)→ (V
RT
+0.5V), C
d
=0.1µF
V
ORL
=0.4V
+1.0%
−1.0%
−
V
RT
×3%
V
RT
×5%
V
RT
×8%
100
300
−
0.1
−
−
5
−
−
9
10
11
−
0.9
−
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.2004-12-24
NJM2807
TIMING CHART
V
IN
[V]
V
O
t
V
O
[V]
V
O
V
RTH
V
RT
t
V
OR
[V]
V
O
t
d
t
d
t
d
t
∗
When the pull-up of the V
OR
is carried out to V
IN
through resistance.
Ver.2004-12-24
-3-
NJM2807
TEST CIRCUIT
I
Q
V
IN
V
O
I
OR
NJM2807
0.33µF
V
IN
R
L
Cd
GND
V
OR
V
V
1.0µF *1 I
OUT
(Ceramic)
V
OR
V
OUT
0.1µF
*1 Vo≤2.4V: Co=2.2µF (Ceramic)
TYPICAL APPLICATIONS
V
IN
V
IN
V
O
V
OUT
NJM2807
0.33µF
100kΩ
1.0µF *2
V
OR
Cd
GND
0.1µF
V
OR
*2 Vo≤2.4V: Co=2.2µF
-4-
Ver.2004-12-24
NJM2807
[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.
Ver.2004-12-24
-5-
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
