L3380 Ver la hoja de datos (PDF) - Unisonic Technologies
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L3380 Datasheet PDF : 9 Pages
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L3380
CMOS IC
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
RATINGS
UNIT
VOUT Pin Voltage
VOUT
12
V
SHUTDOWN Pin Voltage
VSHUTDOWN
VSS-0.3~12
V
EXT Pin Voltage
VEXT
-0.3~ VOUT+0.3
V
EXT Pin Current
IEXT
±80
mA
Power Dissipation
Operating Ambient Temperature
Storage Temperature
PD
TOPR
TSTG
250
mW
-40~+85
℃
-40~ +125
℃
Note: 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.
ELECTRICAL CHARACTERISTICS
Refer to the test circuit, TOPR=25ºC, VIN=VOUT (S)*0.6, IOUT=VOUT (S)/50Ω, unless otherwise specified.
PARAMETER
SYMBOL TEST
CIRCUIT
TEST CONDITION
MIN TYP
TOTAL DEVICE
MAX UNIT
Output Voltage
Supply Current 1
Supply Current 2
Input Voltage
VOUT
IS1
IS2
VIN
Operation Holding Voltage VHOLD
2
VOUT
VOUT (S)
VOUT
V
(S)*0.976
(S)*1.024
1
VOUT=VOUT (S)*0.95
39.8 66.4 uA
1
VOUT=VIN (S)+0.5V
6.3 12.5 uA
2
10
V
Measured by decreasing VIN
2 voltage gradually, when
0.7
V
IOUT=1mA.
Operation Start Voltage
VST1
2
IOUT=1mA
0.9 V
Oscillation Start Voltage
Oscillation Frequency
Duty Ratio
Line Regulation
Load Regulation
Temperature Coefficient
Efficiency
Soft Start time
SHUTDOWN
Shutdown Supply Current
Shutdown Pin Input
Current
Shutdown Pin Input
Voltage Threshold
VST2
fOSC
Duty
⊿LNR
⊿LDR
ET
EF
Ts
ISS
ISH
ISL
VIH
VIL1
V IL2
1
Increase the VIN until EXT pin
output the oscillating signal
0.8 V
1
VOUT=VOUT (S)*0.95
85
100 115 KHZ
1
VOUT=VOUT (S)*0.95
75
83
90 %
2
VIN=VOUT (S)*0.4 to *0.6
30
60 mV
2
IOUT=10uA to VOUT (S)/50*1.25
2
⊿VOUT/(⊿TOPR*VOUT)
TOPR=-40℃ to +85℃
30
±50
60 mV
ppm/
℃
2
86
%
2
3.0
6.0 12.0 ms
1
VSHUTDOWN=0
1
VSHUTDOWN=VOUT (S)*0.95
VSHUTDOWN=0
Shutdown pin “L” to “H” until
0.75
EXT output oscillating signal
1
Shutdown pin
“H” to “L” until
VOUT≥1.5V
EXT output
oscillating signal VOUT<1.5V
0.5 uA
0.1 uA
-0.1 uA
V
0.3 V
0.2 V
EXT
EXT Pin Current
IEXTH
IEXTL
1
VEXT=VOUT (S) -0.4V
1
VEXT= 0.4V
-16.1 -32.3
mA
27.4 54.8
mA
Note: VOUT (S) is the value of the set output voltage.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 9
QW-R502-099,A
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