SP6851 Datasheet, PDF (5/12 Pages) SYNC POWER Crop. – Green-Mode Power Switch

SP6851
Green-Mode Power Switch
ELECTRICAL CHARACTERISTICS
(T_A=25℃, V_CC=15V, unless otherwise specified.)
Symbol
Parameter
Conditions
Min. Typ. Max. Unit
Supply Voltage ( Vcc Pin )
Istt Startup Current
10 20 uA
VCOMP = 0V
2.7
4 mA
Iop Operating Current
VCOMP = 3V
2.4
mA
Protection
tripped
(OLP, OVP)
1.0
mA
UVLO (off) Min. Operating Voltage
9.0 10.0 11.0 V
UVLO (on ) Start Threshold Voltage
15.0 16.0 17.0 V
OVP Level Over Voltage Protection
26 27 29.5 V
Voltage Feedback ( Comp Pin )
Isc Short Circuit Current
1.25 2.2 mA
Vop Open Loop Voltage
6
V
VTH(GM) Green Mode Threshold VCOMP
2.35
V
Oscillator ( RT Pin )
FOSC Frequency
RT=100KΩ
60.0 68.0 70.0 KHz
FOSC(GM) Green Mode Frequency
Fs=65.0KHz
22
KHz
Fdt Frequency Variation versus Temp. Deviation (-40°C ~105°C)
3%
Fdv Frequency Variation versus VCC Deviation (VCC=11V-22V)
1%
Current Sensing ( CS Pin )
Vcs(off) Maximum Input Voltage
0.8 0.85 0.9 V
TLEDD Leading Edge Blanking Time
280
nS
Zcs Input impedance
1
MΩ
TPD
MOSFET
DC (Max)
DC (Min)
VDSS
IDSS
RDS(ON)
Delay to Output
Maximum Duty Cycle
Minimum Duty Cycle
Drain-Source Breakdown Voltage
Drain-Source Leakage Current
On-State Resistance
100
nS
70 75 80 %
0
%
VGS=0V, ID=250uA 650
V
VGS=0V, VDS=550V
10 uA
VGS=10V, ID=1A
4.95 Ω
VSD Forward On Voltage
Co Output capacitance
Tr Rising Time
Tf Falling Time
OLP ( Over Load Protection )
TLOLP OLP Trip Level
TDOLP OLP Delay Time (note)
VGS=0V, IS=1.4A
VGS=0V, VDS=25V,
f=1.0MHz
1.5 V
27
pF
50 200 nS
30 120 nS
5.0
V
60
mS
Note: The OLP delay time is proportional to the period of switching cycle. So that, the lower RT value will set the higher
switching frequency and the shorter OLP delay time.
2012/08/09 Ver.2
Page 5