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LR478 数据表(PDF) 4 Page - E-Tech Electronics LTD

部件名 LR478
功能描述  REGULATORRESET IC
PDF  8 Pages
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制造商  ETL [E-Tech Electronics LTD]
网页  http://e-tech.com.hk
标志 ETL - E-Tech Electronics LTD

LR478 数据表(HTML) 4 Page - E-Tech Electronics LTD

  LR478 Datasheet HTML 1Page - E-Tech Electronics LTD LR478 Datasheet HTML 2Page - E-Tech Electronics LTD LR478 Datasheet HTML 3Page - E-Tech Electronics LTD LR478 Datasheet HTML 4Page - E-Tech Electronics LTD LR478 Datasheet HTML 5Page - E-Tech Electronics LTD LR478 Datasheet HTML 6Page - E-Tech Electronics LTD LR478 Datasheet HTML 7Page - E-Tech Electronics LTD LR478 Datasheet HTML 8Page - E-Tech Electronics LTD  
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LR478
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 8
www.unisonic.com.tw
QW-R119-003.C
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VIN
-0.3 ~ +10
V
Output Current
IOUT
400
mA
Power Dissipation(note3)
PD
700
mW
Junction Temperature
TJ
+125
C
Operating Temperature
TOPR
-40 ~ +85
C
Storage Temperature
TSTG
-40~+150
C
Note 1. Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
2. The device is guaranteed to meet performance specification within 0℃ ~ +70℃ operating temperature range
and assured by design from –20℃ ~ +85℃.
RECOMMENDED OPERATION CONDITIONS
PARAMETER
SYMBOL
RATINGS
UNIT
Operating Voltage
VOPR
0 ~ 10
V
Output Current
IOUT
0 ~ 300
mA
ELECTRICAL CHARACTERISTICS(VCONT =1.6V, Ta=25C, unless otherwise specified )
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
No-load Input Current 1
IQ1
VIN=5V, IOUT=0mA
3
8
mA
No-load Input Current 2
IQ2
VIN=4V, IOUT=0mA
4
mA
Input Current (OFF)
IQ3
VIN=5V, VCONT=0.4V
250
μA
Regulator
Output Voltage
VOUT
VIN=5V, IOUT=30mA
3.33
3.40
3.47
V
Input-Output Different Voltage
VI/O(DIFF)
VIN=3.2V, IOUT=150mA
0.15
0.3
V
Line Regulation
∆VOUT
VIN=4.4~5.5V, IOUT=30mA
10
20
mV
Load Regulation
∆VOUT
VIN=5V, IOUT=0~300mA
20
120
mV
VOUT Temperature Coefficient
∆VOUT/∆TVIN=5V, IOUT=30mA, TJ= -20~85C
100
ppm/
C
Ripple Rejection
RR
VIN=5V, IOUT=30mA, f=120Hz
VRIPPLE=1VP-P
50
80
dB
Output Noise Voltage
VIN
VIN=5V, IOUT=30mA, f=20~80kHz
40
120
μVrms
CONT Terminal Current
ICONT
VCONT=1.6V
5
10
μA
High Threshold Voltage
VTHR(H)
1.6
VIN+0.3
V
Low Threshold Voltage
VTHR(L)
-0.3
0.4
V
Reset
Detection Voltage
VS
VIN= VTHR(H)→VTHR(L)
4.11
4.20
4.29
V
Vs Temperature Coefficient
∆VS/∆T
TJ= -20~85C
100
ppm/
C
Hysteresis Voltage
VHYS
VIN= VTHR(H)→VTHR(L)→VTHR(H)
100
200
mV
Low-Level Output Voltage
VOL
VIN=3.9V, RL=4.7K
100
200
mV
Output Leakage Current
ILEAK
VIN=5V
±0.1
μA
Output Current 1
IOUT1
VIN=3.9V, RL=0
5
mA
Output Current 2
IOUT2
VIN=3.9V, RL=0, Ta= -20~85C
3
mA
“H” Transmission Delay Time
tPLH
Cd =0.0μF
30
90
μs
Reset Delay Time
tPLH 1
VIN=4V→5V, Cd =0.1μF
5
10
20
ms
“L” Transmission Delay Time
tPLH
30
90
μs
Threshold Operating Voltage
VTHR(OPR) VoL=0.4V
0.65
0.85
V



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