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參數(shù)資料
| 型號： | LR478L-2.5-S08-T |
| 廠商： | UNISONIC TECHNOLOGIES CO LTD |
| 元件分類： | 電源管理 |
| 英文描述： | POWER SUPPLY SUPPORT CKT, PDSO8 |
| 封裝： | LEAD FREE, SOP-8 |
| 文件頁數(shù)： | 4/8頁 |
| 文件大小： | 133K |
| 代理商： | LR478L-2.5-S08-T |
LR478
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 8
www.unisonic.com.tw
QW-R112-001,B
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
-20 ~ +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
A
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
Vrms
CONT Terminal Current
ICONT
VCONT=1.6V
5
10
A
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/TTJ= -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
A
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 =0.0F
30
90
s
Reset Delay Time
tPLH 1
VIN=4V→5V, Cd =0.1F
5
10
20
ms
“L” Transmission Delay Time
tPLH
30
90
s
Threshold Operating Voltage
VTHR(OPR) VoL=0.4V
0.65
0.85
V
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