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UC3837L-AG6-R датащи(PDF) 5 Page - Unisonic Technologies

номер детали UC3837L-AG6-R
подробное описание детали  LOW COST POWER-SAVING MODE PWM CONTROLLER FOR FLYBACK CONVERTERS
PDF  11 Pages
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3837L-AG6-R датащи(HTML) 5 Page - Unisonic Technologies

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UC3837
Preliminary
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
5 of 11
www.unisonic.com.tw
QW-R103-069.A
ELECTRICAL CHARACTERISTICS (TA=25°C, VDD=16V，unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SUPPLY SECTION
Start Up Current
ISTR
VDD = VDD(ON)-0.1V
5
20
μA
IC Operating current
IOP
VFB=3.5V
3.2
5
mA
VDD Zener Clamp Voltage
VCLAMP
IDD=10mA
23
24.6
26
mA
UNDER-VOLTAGE LOCKOUT SECTION
Start Threshold Voltage
VTHD(ON)
13
14.5
15.5
V
Min. Operating Voltage
VDD(MIN)
7.5
8.5
9.5
V
Hysteresis
VDD(HY)
5.4
V
CONTROL SECTION
VFB Open Loop Voltage Level
VFB-OPEN
5
V
PWM Input Gain
AVCS
∆VFB/∆VCS
3
V/V
Burst-Mode Out FB Voltage
VFB(OUT)
VSENSE =0
1.1
V
Reduce-Frequency end FB Voltage
VFB(END)
VSENSE =0
1.8
V
Burst-Mode Enter FB Voltage
VFB(IN)
VSENSE =0
0.9
V
Switch Frequency
Normal
FSW
VFB=3.5V, hopping Rang
55
65
75
KHz
Power-Saving
Before enter burst mode
20
22
25
KHz
Duty Cycle
DMAX
VFB=3.5V, VSENSE=0
75
%
Frequency Hopping
FJ(SW)
-4
+4
%
Frequency VDD Stability
FDV
VDD=12V~20V
5
%
Frequency Temperature Stability
FDT
T=-20~100°C
1.5
5
%
Feedback Resistor
RFB
11
KΩ
PROTECTION SECTION
VCC Over Voltage Protection Threshold
VOVP
VFB=4.2V
26
V
FB PIN Over Load Protection Threshold
VOLP
4.4
4.7
5.0
V
Over Load Protection Delay-Time
TDelay
55
mS
Soft start time
TSS
4
mS
CURRENT LIMITING SECTION
Peak Current Threshold Voltage
VCS
VFB=3.5V, Duty=0%
0.6
0.65
0.7
V
Lead Edge Blanking Time
TLEB
400
ns
DRIVER OUTPUT SECTION
Output Voltage Low State
VOL
VDD=16V,IO=-20mA
0.8
V
Output Voltage High State
VOH
VDD=16V,IO= 20mA
10
V
Output Voltage Rise Time
tR
CL=1.0nF
100
ns
Output Voltage Fall Time
tF
CL=1.0nF
60
ns
BNO SECTION
Threshold voltage for BNO
VTH_BNO
0.95
1.0
1.05
V



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