A6986F 데이터 시트보기 (PDF) - STMicroelectronics
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A6986F
STMicroelectronics
A6986F Datasheet PDF : 72 Pages
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Electrical characteristics
A6986F
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test condition
Note Min. Typ. Max. Unit
Inner current loop
Current sense
gCS transconductance (VCOMP to Ipk = 1 A
inductor current gain)
(2)
2.5
A/V
VPP gCS Slope compensation
(5) 0.45 0.75 1
A
Overvoltage protection
VOVP Overvoltage trip (VOVP/VREF)
VOVP
HYST
Overvoltage hysteresis
Synchronization (fan out: 6 slave devices typ.)
fSYN MIN Synchronization frequency
VSYN TH SYNCH input threshold
ISYN SYNCH pull-down current
High level output
VSYN OUT Low level output
LNM; fSW = VCC
LNM, SYNCH rising
LNM, VSYN = 1.2 V
LNM, 5 mA sinking load
LNM, 0.7 mA sourcing load
Reset
VTHR Selected RST threshold
MLF pinstrapping before SS
VTHR
HYST
RST hysteresis
VRST RST open collector output
VIN > VINH AND
VFB < VTH
4 mA sinking load
2 < VIN < VINH
4 mA sinking load
Delay
VTHD
ID CH
RST open collector released
as soon as VDELAY > VTHD
CDELAY charging current
VFB > VTHR
VFB > VTHR
Thermal shutdown
1.15 1.2 1.25
0.5 2
5%
266.5
kHz
0.70
1.2 V
0.7
mA
1.40
V
0.6
see Table 7, Table 8,
Table 9
(2)
2
%
0.4
V
0.8
1.19
1.23
4
1.258
V
1
2
3 A
TSHDWN
THYS
Thermal shutdown
temperature
Thermal shutdown hysteresis
(2)
165
°C
(2)
30
1. Parameter tested in static condition during testing phase. Parameter value may change over dynamic application condition.
2. Not tested in production.
3. LCM enables SLEEP mode at light-load.
4. TJ = -40 °C.
5. Measured at fsw = 250 kHz.
10/72
DocID027739 Rev 1
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