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UC3875LG-S08-R 数据表(PDF) 5 Page - Unisonic Technologies

部件名 UC3875LG-S08-R
功能描述  Programmable frequency
PDF  11 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

UC3875LG-S08-R 数据表(HTML) 5 Page - Unisonic Technologies

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UC3875L
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
5 of 11
www.unisonic.com.tw
QW-R103-125 .A
ELECTRICAL CHARACTERISTICS (VDD=15V, RI=100KΩ, TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX
UNIT
HV START
Supply Current from ST Pin
IST
0.25
mA
Start Pin Leakage Current After Startup
IEAKAGE
10
μA
Drain-Source break out voltage
BVDS
500
V
SUPPLY SECTION
Start Up Current
ISTR
VDD=VDD (ON)-0.5V
2
15
μA
IC Operating Current
IOP
VFB=3.5V
0.8
1.8
mA
VCC Zener Clamp Voltage
VCC (clamp) IVCC=20mA
28
30
32
V
Under-Voltage Lockout Section
Start Threshold Voltage
VTHD (ON)
18
20
22
V
Min. Operating Voltage
VDD (MIN)
6.5
8
9.5
V
VCC Latch up release voltage
VLatch
4.9
V
CONTROL SECTION
VFB Open Loop Voltage Level
VFB-OPEN
5.4
V
PWM Input Gain
AVCS
∆VFB/∆VCS
3
V/V
Burst-Mode Out FB Voltage
VFB (OUT)
VSENSE=0
1.8
V
Burst-Mode Enter FB Voltage
VFB (IN)
VSENSE=0
1.6
V
Normal
VFB=3.5V, RI=100KΩ
60
65
70
KHz
Switch Frequency
Burst mode base
FSW
20
KHz
Duty Cycle
DMAX
VFB=3.5V, VSENSE=0
70
80
90
%
Frequency Hopping
FJ (SW)
-9
+9
%
Frequency VDD Stability
FDV
VDD=12V~20V
10
%
Frequency Temperature Stability
FDT
T=-40~110°C
10
%
PROTECTION SECTION
VCC Over Voltage Protection Threshold
VOVP
VFB=3.9V
25
27
29
V
FB PIN Over Load Protection Threshold
VOLP
4.2
V
Over Load Protection Delay-Time
TDelay
60
88
120
mS
OTP Threshold
T(THR)
VFB=3.9V
140
°C
Soft Start Time
TSS
5
mS
CURRENT LIMITING SECTION
Peak Current Flat Threshold Voltage
VCS-F
0.92
V
Peak Current Valley Threshold Voltage
VCS-V
VFB=4.0V, Duty=0%
0.56
0.59
0.62
V
Lead Edge Blanking Time
TLEB
200
350
550
ns
DRIVER OUTPUT SECTION
Output Voltage Low State
VOL
VDD=16, IO=-20mA
0.8
V
Output Voltage High State
VOH
VDD=16, IO=20mA
11
V
Output Voltage Rise Time
tR
CL=1.0nF
100
ns
Output Voltage Fall Time
tF
CL=1.0nF
60
ns



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