WT7520 데이터 시트보기 (PDF) - Weltrend Semiconductor
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WT7520 Datasheet PDF : 9 Pages
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WT7520
Data Sheet Rev. 0.90
ELECTRICALCHARACTERISTICS,TA=25℃ , VCC=5V,
CHARACTERISTICS
SYMBOL TEST CONDITION Min. Typ. Max. Unit
DEAD TIME CONTROL SECTION
INPUT THRESHOLD VOLTAGE
Vthdt
ZERO DUTY CYCLE
3.0 3.3
V
MAX. DUTY CYCLE
0.1
ERROR AMP SECTION
CLOSE LOOP VOLTAGE GAIN
CROSS OVER POINT
OPNEG BIAS VOLTAGE
0.5V ~ 3.5V
0dB
OPNEG OPEN
65
dB
320
KHZ
2.38 2.45 2.52
V
OUTPUT SECTION
OUTPUT SATURATION VOLTAGE
DRAIN OFF-STATE CURRENT
RISING TIME
FALLING TIME
Vdssat
Idoff
Tr
Tf
Id=200mA
Vcc=Vd=Vs=0V
1.1 1.3
V
2
10
uA
100 200
ns
50
200
ns
PROTECTION SECTION
OVER VOLTAGE PROTECTION（OVP）V33
V5
V12
PT
UNDER VOLTAGE PROTECTION V33
（ UVP）
V5
V12
UVP DISABLE VOLTAGE
PT
UVP DELAY TIME
Td.uvp
3.8 4.1 4.3
V
5.8 6.2 6.6
V
4.41 4.64 4.90
V
1.2 1.25 1.3
V
1.78 1.98 2.18
V
2.70 3.00 3.30
V
2.11 2.37 2.63
V
0.55 0.62 0.68
V
100 280 500
ms
REMOTE ON/OFF SECTION
REM HIGH INPUT VOLTAGE
REM LOW INPUT VOLTAGE
REM PULL HIGH VOLTAGE
REM DELAY TIME
REM OFF DELAY TIME
Vremh
Vreml
Vremo
Trem
Toff
2.0
V
0.8
V
2.0
5.25
V
30
36
42
ms
3.5 4.5 5.5
ms
POWER GOOD SECTION
DETECTING INPUT VOLTAGE
PG OUTPUT PULL–UP RESISTOR
PG OUTPUT LOAD RESISTOR
PG DELAY TIME
OUTPUT SATURATION VOLTAGE
Vdet
Rpup, pg
Rpg
Vsat.pg Ipg=10mA
0.55 0.62 0.68
V
5
KΩ
0.5 1
2
KΩ
150 280 350
ms
0.2 0.4
V
SOFT START SECTION
SINK CURRENT OF SS
SOURCE CURRENT OF SS
Is s.sink
Iss.source
13
uA
700
uA
TOTAL DEVICE
STANDBY SUPPLY CURRENT
Icc
10
20
mA
OSCILLATION SECTION
OSCILLATION FREQUENCY
Fosc
RT=120KΩ
50
70
KHZ
Weltrend Semiconductor, Inc.
Page 5
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