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L8532G-S08-R Datasheet(PDF) 7 Page - Unisonic Technologies

No. de pieza L8532G-S08-R
Descripción Electrónicos  Constant On Time PWM Control
PDF  8 Pages
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Fabricante Electrónico  UTC [Unisonic Technologies]
Página de inicio  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

L8532G-S08-R Datasheet(HTML) 7 Page - Unisonic Technologies

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L8532
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
7 of 8
www.unisonic.com.tw
QW-R125-041..a
ELECTRICAL CHARACTERISTICS (Cont.)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ZERO CURRENT DETECTION
ZCD Arming Threshold
VZCD(ARM)
VZCD=Increasing
1.25
1.4
1.55
V
ZCD Triggering Threshold
VZCD(TRIG) VZCD=Decreasing
0.6
0.7
0.83
V
ZCD Hysteresis
VZCD(HYS)
500
700
900
mV
ZCD Bias Current
IZCD
VZCD= 5V
-2
+2
uA
Positive Clamp Voltage
VCL(POS)
IZCD=3mA
16
18
20
V
Negative Clamp Voltage
VCL(NEG)
IZCD=-2mA
-0.9
-0.7
-0.5
V
ZCD Propagation Delay
tZCD
VZCD=2V~0V ramp,
dV/dt=20V/us,
VZCD=VCD(TRIG) o VDRV= 90%
200
270
ns
Minimum ZCD Pulse Width
tSYNC
70
ns
Maximum Off Time in Absence
of ZCD Transition
tstart
Falling VDRV=10% to Rising,
DRV=90%
75
165
300
us
DRIVE
ROH
Isource=100mA
12
20
Drive Resistance
ROL
ISINK=100mA
6
13
Ω
Rise Time
trise
10%~90%
35
80
ns
Fall Time
tfall
90% to 10%
25
70
ns
Drive Low Voltage
Vout(start)
VCC=VCC(on)-200mV,
Isink=10mA
0.2
V
CURRENT SENSE
Current Sense Voltage
Threshold
VILIM
0.45
0.5
0.55
V
Leading Edge Blanking Duration
tLEB
VCS=2V, VDRV= 90%~10%
100
195
350
ns
Overcurrent Detection
Propagation Delay
tCS
dV/dt=10V/us,
VCS=VILIM to VDRV= 10%
40
100
170
ns
Current Sense Bias Current
ICS
VCS= 2 V
-1
1
uA



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