CR6842 Просмотр технического описания (PDF) - Unspecified
Номер в каталоге
Компоненты Описание
производитель
CR6842 Datasheet PDF : 9 Pages
| |||
CR6842
Electrical Characteristics (Ta=27°C unless otherwise noted, VDD = 15V.)
Symbol
Parameter
Conditions
Min. Typ. Max.
Supply Voltage (VDD Pin)
IST
Startup Current
ISS
Operating Current
VDD=17
VFB= VSENSE = 0V
VDD=15
7.5 30
3.0
5
VTH(ON) Start Threshold Voltage
--
VTH(OFF) Min. Operating Voltage
--
VDD Over Voltage
VDD-OVP
Protection(Latch off)
16.0 16.5 17.0
10.4 10.8 11.2
23.0 24.5 25.0
VDD Low-Threshold Voltage
VDD-th-g
to Exit Green-OFF Mode
11.0 12.0 13.0
Voltage Feedback (FB Pin)
IFB
Short Circuit Current
VFB
Open Loop Voltage
Current Sensing (SEN Pin)
VFB=0V
VFB=Open
1.42
6.00
Threshold voltage for current
VTH
limit
IVIN =0
0.76 0.9
TPD
Delay to Output
ZCS
Input Impedance
Bnk
Leading Edge Blanking Time
Oscillator (RI Pin)
115 200
13
260 354 460
FOSC
FOSC-green
VN
Frequency in nominal mode
Frequency in green mode
Beginning of frequency
reducing at FB Voltage
RI=26KΩ
RI=26 KΩ
VDD=15V
63 67 70
25 27 29
1.95 2.05 2.15
End of frequency reducing at
VG
FB voltage
VDD=15V
1.50 1.54 1.60
Frequency Temp. Stability
-30-85℃
5.0
GATE Drive Output (GATE Pin)
Output Low Level
VOL
Output High Level
VOH
TR
Rising Time
TF
Falling Time
DCMAX Maximum Duty Cycle
Over-Temperature Protection Section
VDD=12V,
IO=50mA
VDD=12V,
7.2
IO=50mA
VDD=15V,CL=1nF 200
VDD=13V,CL=1nF 30
84
0.32 0.60
8.00
240 280
80 90
86 88
IRT
Output current of pin RT
RI=26KΩ
65
70
75
VOTP Threshold voltage for over-temperature protection. 1.00 1.05 1.10
RI Section
RINOR
RIMAX
RIMIN
RI Operating Range
Max RI value for Protection
15.5 26 36
216
6
Unit
µA
mA
V
V
V
V
mA
V
V
nsec
KΩ
nsec
KHz
KHz
V
VG
%
V
V
ns
ns
µA
V
KΩ
KΩ
KΩ
Dec.2006 V 1.3
4
Chengdu Chip-Rail Tech.Co.,Ltd
Share Link: 