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UC3873AL-AG6-R датащи(PDF) 4 Page - Unisonic Technologies

номер детали UC3873AL-AG6-R
подробное описание детали  LOW COST POWER-SAVING MODE PWM CONTROLLER
PDF  10 Pages
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производитель  UTC [Unisonic Technologies]
домашняя страница  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3873AL-AG6-R датащи(HTML) 4 Page - Unisonic Technologies

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UC3873A
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
4 of 10
www.unisonic.com.tw
QW-R103-134.B
ABSOLUTE MAXIMUM RATINGS (TA=25°C, VDD =15V, unless otherwise specified)
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VDD
35
V
Input Voltage to FB Pin
VFB
-0.3 ~ 7
V
Input Voltage to CS Pin
VSENSE
-0.3 ~ 7
V
Junction Temperature
TJ
+150
C
Operating Temperature
TOPR
-40 ~ +125
°C
Storage Temperature
TSTG
-50 ~ +150
C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
OPERATING RANGE
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VDD
10 ~ 24
V
ELECTRICAL CHARACTERISTICS (TA=25°C, VDD=15V，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
0.8
1.8
mA
VCC Zener Clamp Voltage
VCC(clamp)
IVCC=20mA
31
33
35
V
UNDER-VOLTAGE LOCKOUT SECTION
Start Threshold Voltage
VTHD(ON)
16
18
20
V
Min. Operating Voltage
VDD(MIN)
6
7
8
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
1.5
V
Burst-Mode Enter FB Voltage
VFB(IN)
VSENSE =0
1.35
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
78
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)
150
°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=4.0V, Duty=0%
0.60
0.65
0.70
V
Lead Edge Blanking Time
TLEB
200
350
550
ns
DRIVER OUTPUT SECTION
Output Voltage Low State
VOL
VDD=15V,IO=-20mA
1
V
Output Voltage High State
VOH
VDD=15V,IO= 20mA
11
V
Output Voltage Rise Time
tR
CL=1.0nF
150
ns
Output Voltage Fall Time
tF
CL=1.0nF
60
ns
RT SECTION
Output Current of RT pin
IRT
93
100
107
uA
Threshold Voltage for OTP
VTH_OTP
0.98
1.04
1.10
V



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