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UC3837LG-AG6-R датащи(PDF) 5 Page - Unisonic Technologies

номер детали UC3837LG-AG6-R
подробное описание детали  LOW COST POWER-SAVING MODE PWM CONTROLLER
PDF  11 Pages
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3837LG-AG6-R датащи(HTML) 5 Page - Unisonic Technologies

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UC3837L
CMOS IC
UNISONICTECHNOLOGIESCO.,LTD
5 of 11
www.unisonic.com.tw
QW-R103-145.A
ELECTRICAL CHARACTERISTICS (VDD=15V, TA=25°C, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP MAX UNIT
Supply Section
Start Up Current
ISTR
VDD=VDD(ON)-0.5V
2
15
μA
IC Operating Current
IOP
VFB=3.5V
1.5
2.5
mA
VCC Zener Clamp Voltage
VCC (clamp) IVCC=20mA
28
30
32
V
Latch Release Threshold
VTH_LATCH UTC UC3837L
4.6
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
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
60
65
70
KHz
Switch Frequency
Power-Saving
FSW
Before enter burst mode
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)
140
°C
Soft Start Time
TSS
5
mS
Current Limiting Section
Peak Current Flat Threshold Voltage
VCS-F
VFB=3.9V, Duty≥60%
0.92
V
Peak Current Valley Threshold Voltage
VCS-V
VFB=3.9V, Duty=0%
0.68
0.74
0.8
V
Lead Edge Blanking Time
TLEB
200
350
550
ns
Driver Output Section
Output Voltage Low State
VOL
VDD=15V, IO=-20mA
0.8
V
Output Voltage High State
VOH
VDD=15V, IO=20mA
11
V
Output Voltage Rise Time
tR
CL=1.0nF
100
ns
Output Voltage Fall Time
tF
CL=1.0nF
60
ns
BNO Section
Brown Out Threshold Of Line Voltage
VBNO
0.24
0.28
0.31
V
Threshold Voltage For Line Voltage OVP
VTH OVP
0.9
1
1.1
V
BNO input Resistor
RIN
100
kΩ



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