Green-Mode PWM Controller
300mA Driving Capability
ST6850
ELECTRICAL CHARACTERISTICS
(Ta=25℃, Vcc=15V, unless otherwise specified.)
Symbol
Parameter
Supply Voltage ( Vcc Pin )
Istt
Startup Current
Iop
Operating Current
UVLO(off) Min. Operatinf Voltage
UVLO(on) Start Threshold Voltage
Voltage Feedback ( Comp Pin )
Isc
Short Circuit Current
Vop
Vth(gm)
Open Loop Voltage
Green Mode Threshold VCOMP
Rt=100KΩ
Fs=65.0KHz
(-40
℃~105℃)
(Vcc=11V ~ 25V)
60.0
Coneitions
Min.
Typ. Max. Unit
8
2
9.0
15.0
16.0
2.2
5.0
2.35
25
4
17.0
3.0
uA
mA
V
V
mA
V
V
Vcomp=3V
10.0 11.0
Oscillator ( RT Pin )
Fosc
Frequency
Fosc(gm) Green Mode Frequency
Frequency Variation versus Temp
Deviation
Fdv
Frequency Variation versus
Vcc Deviation
Current Sensing ( CS Pin )
Vcs(off)
Zcs
Maximum Input Vlotage
Input impedance
Fdt
65.0 70.0 KHz
20
KHz
3
1
%
%
0.8
0.85
50
150
0.9
V
KΩ
nS
Tpd
Delay to Output
Gate Driver Output ( OUT pin )
VOL
Output Low level
VOH
Tr
Tf
Output High Level
Rising Time
Falling Time
Vcc=15V,
Io=20mA
Vcc=15V,
Io=20mA
Load Cap=1000pF
Load Cap=1000pF
1
8
50
30
200
120
V
V
nS
nS
STANSON TECHNOLOGY
120 Bentley Square, Mountain View, Ca 94040 USA
TEL: (650) 9389294 FAX: (650) 9389295
Page 6
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