NJM2804 PDF даташит
Спецификация NJM2804 изготовлена «New Japan Radio» и имеет функцию, называемую «Low Dropout Voltage Regulator». |
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Детали детали
Номер произв | NJM2804 |
Описание | Low Dropout Voltage Regulator |
Производители | New Japan Radio |
логотип |
5 Pages
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NJM2804
Low Dropout Voltage Regulator with Reset
! GENERAL DISCRIPTION
The NJM2804 is a low dropout voltage regulator with reset
function.
It provides up to 300mA 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
" Reset Hold Time
VRT ±1.0%
td = 10mS±1.0mS
" Ripple Rejection
70dB typ. (f =1kHz)
" Quiescent Current
" Input Voltage Monitor type
IQ = 250µA (typ.)
" Open Collector Output
" Internal Short Circuit Current Limit
" Internal Thermal Overload Protection
" Bipolar Technology
" Package Outline
SOT-89 -5
! PACKAGE OUTLINE
NJM2804U
! PIN CONFIGURATION
524
123
NJM2804U
PIN FUNCTION
1.VOUT
2.GND
3.Cd
4.VOR
5.VIN
! OUTPUT VOLTAGE/ DETECTION VOLTAGE
Device Name
NJM2804U2528
NJM2804U3342
VOUT
2.5V
3.3V
VDET
2.8V
4.2V
! EQUIVALENT CIRCUIT
VIN
VOR
Thermal
Protection
VOUT
GND
Cd
Bandgap
Reference
Ver.2004-01-19
-1-
No Preview Available ! |
NJM2804
! ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
Power Dissipation
Operating Temperature
VIN
PD
Topr
Storage Temperature
Tstg
RATINGS
+14
350
-40 ∼ +85
-40 ∼ +125
(Ta=25°C)
UNIT
V
mW
°C
°C
! ELECTRICAL CHARACTERISTICS
(VIN=Vo+1V, CIN=0.1µF, Co=1.0µF (Co=2.2µF: Vo≤2.6V) Ta=25°C)
PARAMETER
SYMBOL
TEST CONDITION
MIN. TYP. MAX. UNIT
Quiescent Current
Regulator Block
IQ VIN=Vo+2V, Io=0mA
− 250 350 µA
Output Voltage
Vo Io=30mA
-1.0% − +1.0% V
Output Current
Io Vo-0.3V
300 200 − mA
Line Regulation
Load Regulation
∆Vo/∆VIN VIN=Vo+1V ∼ Vo+6V, Io=30mA
∆Vo/∆Io Io=0 ∼ 100mA
− − 0.10 %/V
− − 0.03 %/mA
Dropout Voltage
∆VI_O Io=60mA
− 0.10 0.18 V
Ripple Rejection
RR ein=200mVrms, f=1kHz, Io=10mA,Vo=3V
− 60 − dB
Output Voltage
Temperature Coefficient
∆Vo/∆T Ta=0 ∼ 85°C, Io=10mA
− ± 50 − ppm/°C
Output Noise Voltage
Reset Block
VNO f=10Hz ∼ 100kHz, Io=10mA, Vo=3V
− 45 − µVrms
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=H→L
VIN=H→L→H
VIN=VRT-0.5V, RL=100kΩ
VIN= VRT+0.5V
VIN=VRT-0.5V, RL=0Ω
VIN=(VRT-0.5V)→ (VRT+0.5V), Cd=0.1µF
-1.0% − +1.0%
VRT×3 VRT×5 VRT×8
− 100 300
− − 0.1
5−−
9 10 11
V
mV
mV
µA
mA
mS
Operation Voltage Limit
VOPL
VORL=0.4V
− 0.9 −
V
(*note 1): 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.2004-01-19
No Preview Available ! |
! TIMING CHART
VIN[V]
V RT
VO
VRTH
VO[V]
VO
NJM2804
t
VOR[V]
t
td td
∗ VOR is the case where a pull-up is carried out to VIN through resistance.
Ver.2004-01-19
td
t
-3-
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