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UCS1201L-S08-T 데이터시트(PDF) 4 Page - Unisonic Technologies

부품명 UCS1201L-S08-T
상세설명  LOW VOLTAGE SYNCHRONOUS BUCK CONTROLLER
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제조업체  UTC [Unisonic Technologies]
홈페이지  http://www.utc-ic.com
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UCS1201
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 5
www.unisonic.com.tw
QW-R103-066.a
ELECTRICAL CHARACTERISTICS
(0°C<TJ<125°C, 9.0V<VCC<20V, CGATE(H)=CGATE(L)=3.3nF, CCOMP=0.1μF, ROSC=74kΩ, unless otherwise specified.)
(Note 1)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Error Amplifier
VFB Bias Current
IFB
VFB=0V
0.4
2.0
μA
COMP Source Current
ISOURCE COMP=1.5V, VFB=0.8V
15
30
60
μA
COMP Sink Current
ISINK
COMP=1.5V, VFB=1.2V
15
30
60
μA
Reference Voltage
VREF
COMP=VFB
0.970
0.980
0.990
V
TJ<25°C
0.965
0.980
0.995
V
COMP Max Voltage
VCOMP-MAXVFB=0.8V
2.4
3.1
V
COMP Min Voltage
VCOMP-MIN VFB=1.2V
0.1
0.2
V
COMP Fault Discharge
Current at UVLO
ICHARGE COMP=1.2V, VCC=6.9V
0.5
1.2
mA
COMP Fault Discharge
Threshold to Reset UVLO
VRESET
0.1
0.25
0.3
V
GATE(H) and GATE(L)
Rise Time
tR
1.0V<GATE(L), GATE(H)<VCC-2.0V, VCC=12V
40
80
ns
Fall Time
tF
VCC-2.0V<GATE(L), GATE(H)<1.0V, VCC=12V
40
80
ns
GATE(H) to GATE(L)
Delay
tDH
GATE(H)<2.0V, GATE(L)>2.0V
40
60
105
ns
GATE(L) to GATE(H)
Delay
tDL
GATE(L)<2.0V, GATE(H)>2.0V
40
60
105
ns
Minimum Pulse Width
tPULSE GATE(X)=4.0V
250
ns
High Voltage (AC)
VH
Measure GATE(L) or GATE(H)
0.5nF<CGATE(H)=CGATE(L)<10nF, (Note 2)
VCC-0.5 VCC
V
Low Voltage (AC)
VL
Measure GATE(L) or GATE(H)
0.5nF<CGATE(H)=CGATE(L)<10nF, (Note 2)
0
0.5
V
PWM Comparator
PWM Comparator Offset VPWM-MIN
VFB=0V, Increase COMP Until GATE(H) Starts
Switching
0.415
0.465
0.525
V
Ramp Max Duty Cycle
80
%
Artificial Ramp
Duty Cycle=50%, ROSC=74kΩ
50
63
75
mV
Transient Response
COMP=1.5V, VFB 20mV Overdrive. (Note 2)
200
300
ns
VFB Input Range
(Note 3)
0
1.4
V
Oscillator
Switching Frequency
FOSC
ROSC Not Used
170
200
230
kHz
FOSC
ROSC=74kΩ
240
280
320
kHz
General Electrical Specifications
VCC Supply Current
IQ
COMP=0V (No Switching)
9.0
12
mA
Start Threshold
GATE(H) Switching, COMP Charging
8.0
8.5
9.0
V
Stop Threshold
GATE(H) Not Switching, COMP Discharging
7.0
7.5
8.0
V
Hysteresis
VHYS
Start-Stop
0.75
1.0
1.25
V
Notes:1.Characteristics at temperature extremes are guaranteed via correlation using quality statistical control
methods.
2.Guaranteed by design. Not tested in production.


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