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UC3655L-XX-AF5-R датащи(PDF) 4 Page - Unisonic Technologies

номер детали UC3655L-XX-AF5-R
подробное описание детали  500mA SYNCHRONOUS STEP-DOWN DC/DC CONVERTERS
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3655L-XX-AF5-R датащи(HTML) 4 Page - Unisonic Technologies

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UC3655
Preliminary
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
4 of 9
www.unisonic.com.tw
QW-R502-280.c
ABSOLUTE MAXIMUM RATING (TA=25°C)
PARAMETER
SYMBOL
RATINGS
UNIT
VIN Pin Voltage
VIN
- 0.3 ~ 6.5
V
Input/Output Pins
LX
VLx
- 0.3 ~ VIN + 0.3
V
VOUT
VOUT
-0.3 ~ 6.5
CE/MODE
VCE
- 0.3 ~ VIN + 0.3
Lx Pin Current
ILX
±1000
mA
Power Dissipation
PD
250
mW
Operating Temperature
TOPR
- 40 ~ 85
°C
Storage Temperature Range
TSTG
- 55 ~ 125
°C
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 (fOSC=1.2MHz, TA=25°C)
UC3655-12
(VIN=3.6V, VOUT=1.2V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Operating Voltage Range
VIN
2.0
6.0
V
Output Voltage
VOUT
CE=VIN, IOUT=30mA
1.176 1.200 1.224
V
U.V.L.O. Voltage
VUVLO
CE=VIN, VOUT=0V, LX=L
1.0
1.40
1.78
V
Output Voltage Temperature
Characteristics
ΔVOUT
VOUT*ΔTOPR IOUT=30mA, -40°C ≤TOPR≤85°C
±100
ppm/°C
Maximum Output Current
IOUT(MAX)
VIN=4.5V
500
mA
Supply Current
IDD
VIN=CE=5.0V, VOUT=VOUT*1.1
70
115
µA
Stand-by Current
ISTN-BY
VIN=5.0V, CE=0V, VOUT=VOUT*1.1
0
1.0
µA
PFM Switch Current
IPFM
CE=VIN, IOUT=1mA
100
140
180
mA
Current Limit
ILIM
VIN=CE=5.0V, VOUT=0V
600
700
mA
Efficiency (Note 1)
η
CE=VIN=4.5V, IOUT=100mA
90
%
OSCILLATOR
Oscillation Frequency
fOSC
IOUT=100mA
1020
1200
1380
kHz
Maximum Duty Ratio
DMAX
CE=VIN, VOUT=0V
100
%
Minimum Duty Ratio
DMIN
CE=VOUT=VIN
0
%
Soft-Start Time
TSS
IOUT=1mA
0.5
1.0
3.0
ms
Latch Time
TLAT
VIN=CE=5.0V (Note 3)
1
20
ms
CE (PIN 3)
CE "H" Voltage
VCEH
0.9
VIN
V
CE "L" Voltage
VCEL
VSS
0.3
V
CE "H" Current
ICEH
VIN=CE=5.5V, VOUT=0V
-0.1
0.1
µA
CE "L" Current
ICEL
VIN=5.5V, CE=0V, VOUT=0V
-0.1
0.1
µA
LX (PIN 5)
LX SW "H" ON Resistance
RLXH
CE=0.5VIN, VOUT=0V, ILX=100mA
0.6
LX SW "L" ON Resistance
RLXL
CE=0.5VIN, ILX=100mA
0.7
LX SW "H" Leak Current (Note 2)
ILEAKH
VIN=VOUT=5.0V, CE=0V, LX=0V
0.01
1.0
µA
LX SW "L" Leak Current
ILEAKL
VIN=VOUT=5.0V, CE=0V, LX=5.0V
0.01
1.0
µA


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