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L6986 Scheda tecnica(PDF) 10 Page - STMicroelectronics

Il numero della parte L6986
Spiegazioni elettronici  38 V, 2 A synchronous step-down switching regulator with 30 A quiescent current
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

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Electrical characteristics
L6986
10/68
DocID025376 Rev 7
AV
Error amplifier gain
(2)
100
dB
ICOMP
EA output current capability
±6
±12
±25
A
Inner current loop
gCS
Current sense transconductance
(VCOMP to inductor current gain)
Ipk = 1 A
(4)
2.5
A/V
Slope compensation
(4)
0.4
0.75
1.0
A
Overvoltage protection
VOVP
Overvoltage trip (VOVP/VREF)
1.15
1.2
1.25
VOVP HYST Overvoltage hysteresis
0.5
2
5
%
Synchronization (fan out: 6 slave devices typ.)
fSYN MIN
Synchronization frequency
LNM; fSW = VCC
266.5
kHz
VSYN TH
SYNCH input threshold
LNM, SYNCH rising
0.70
1.2
V
VSYN HYST SYNCH input threshold hysteresis LNM
20
mV
ISYN
SYNCH pulldown current
LNM, VSYN = 1.2 V
0.7
mA
VSYN OUT
high level output
LNM, 5 mA sinking load
1.40
V
low level output
LNM, 0.7 mA sourcing load
0.6
Reset
VTHR
Selected RST threshold
MLF pinstrapping before SS
see Table 7
VTHR HYST RST hysteresis
(2)
2%
VRST
RST open collector output
VIN > VINH AND
VFB < VTH
4 mA sinking load
0.4
V
2 < VIN < VINH
4 mA sinking load
0.8
Delay
VTHD
RST open collector released as
soon as VDELAY > VTHD
VFB > VTHR
1.19
1.234 1.258
V
ID CH
CDELAY charging current
VFB > VTHR
12
3
A
Thermal shutdown
TSHDWN
Thermal shutdown temperature
(2)
165
C
THYS
Thermal shutdown hysteresis
(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. Measured at fSW = 250 kHz.
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test condition
Note Min.
Typ.
Max. Unit
VPP gCS


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