SP6853
Green-Mode PWM Controller
ELECTRICAL CHARACTERISTICS
(T
A
=25
℃
, V
CC
=15V, unless otherwise specified.)
Symbol
Parameter
Supply Voltage ( Vcc Pin )
I
stt
Startup
Current
I
op
Operating
Current
Conditions
V
COMP
= 0V
V
COMP
= 3V
Protection
(OLP, OVP)
tripped
Min.
Typ.
10
2.7
2.4
1.0
Max.
20
4
Unit
uA
mA
mA
mA
V
V
V
mA
V
V
KHz
KHz
%
%
V
nS
MΩ
nS
%
%
V
V
UVLO
(off)
Min. Operating Voltage
UVLO
(on )
Start Threshold Voltage
OVP Level Over Voltage Protection
Voltage Feedback ( Comp Pin )
Isc
Short Circuit Current
Vop
Open Loop Voltage
V
TH(GM)
Green Mode Threshold VCOMP
Oscillator ( RT Pin )
F
OSC
Frequency
F
OSC(GM)
Green Mode Frequency
Fdt
Frequency Variation versus Temp. Deviation
Fdv
Frequency Variation versus V
CC
Deviation
Current Sensing ( CS Pin )
Vcs(off) Maximum Input Voltage
Leading Edge Blanking Time
T
LEDD
Zcs
Input impedance
T
PD
Delay to Output
Gate Driver Output ( OUT Pin )
DC
(Max)
Maximum Duty Cycle
DC
(Min)
Minimum Duty Cycle
V
OL
V
OH
9.0
15.0
24
10.0
16.0
26
1.25
6
2.35
11.0
17.0
29.5
2.2
R
T
=100KΩ
Fs=65.0KHz
(-40°C ~105°C)
(V
CC
=11V-25V)
60.0
68.0
22
75.0
3
1
0.8
1
0.85
280
100
0.9
70
V
CC
=15V,
Io=20mA
V
CC
=15V,
Io=20mA
Load Cap=1000pF
Load Cap=1000pF
75
0
80
1
Output Low Level
Output High Level
8
50
30
5.0
60
200
120
Tr
Rising Time
Tf
Falling Time
OLP ( Over Load Protection )
OLP Trip Level
TL
OLP
OLP Delay Time (note)
TD
OLP
switching frequency and the shorter OLP delay time.
nS
nS
V
mS
Note: The OLP delay time is proportional to the period of switching cycle. So that, the lower RT value will set the higher
2008/08/10
Ver.1
Page 5
SYNC-POWER [ SYNC POWER CROP. ]
