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UC3655L-33-AF5-R 数据表(PDF) 4 Page - Unisonic Technologies

部件名 UC3655L-33-AF5-R
功能描述  500mA SYNCHRONOUS STEP-DOWN DC/DC CONVERTERS
PDF  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  UTC [Unisonic Technologies]
网页  http://www.utc-ic.com
标志 UTC - Unisonic Technologies

UC3655L-33-AF5-R 数据表(HTML) 4 Page - Unisonic Technologies

  UC3655L-33-AF5-R Datasheet HTML 1Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 2Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 3Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 4Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 5Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 6Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 7Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 8Page - Unisonic Technologies UC3655L-33-AF5-R Datasheet HTML 9Page - Unisonic Technologies  
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UC3655
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
4 of 9
www.unisonic.com.tw
QW-R502-280.F
ELECTRICAL CHARACTERISTICS(Cont.)
UC3655-28
(VIN=3.6V, VOUT=2.8V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Operating Voltage Range
VIN
2.0
6.0
V
Output Voltage
VOUT
CE=VIN, IOUT=30mA
2.744
2.8
2.856
V
U.V.L.O. Voltage
VUVLO
CE=VIN, VOUT=0V, LX=L
1.0
1.40
1.78
V
Output Voltage Temperature
Characteristics
∆VOUT
VOUT*∆TOPR
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
75
120
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
92
%
OSCILLATOR
Oscillation Frequency
fOSC
IOUT=100mA
1020
1300
1500
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
0.5
Ω
LX SW "L" ON Resistance
RLXL
CE=0.5VIN, ILX=100mA
0.6
Ω
LX SW "H" Leak Current
ILEAKH
VIN=VOUT=5.0V, CE=0V, LX=0V
(Note 2)
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
UC3655-33
(VIN=5.0V, VOUT=3.3V)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Operating Voltage Range
VIN
2.0
6.0
V
Output Voltage
VOUT
CE=VIN, IOUT=30mA
3.234 3.300 3.366
V
U.V.L.O. Voltage
VUVLO
CE=VIN, VOUT=0V, LX=L
1.0
1.40
1.78
V
Output Voltage Temperature
Characteristics
∆VOUT
VOUT*∆TOPR
IOUT=30mA, -40 ≤T
℃
OPR≤85℃
±100
ppm/°C
Maximum Output Current
IOUT(MAX)
VIN=4.5V
500
mA
Supply Current
IDD
VIN=CE=5.0V, VOUT=VOUT*1.1
75
120
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
92
%
OSCILLATOR
Oscillation Frequency
fOSC
IOUT=100mA
1020
1300
1500
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



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