SC1405 Просмотр технического описания (PDF) - Semtech Corporation
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SC1405 Datasheet PDF : 12 Pages
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HIGH SPEED SYNCHRONOUS POWER
MOSFET SMART DRIVER
SC1405
August 31, 2000
ELECTRICAL CHARACTERISTICS (DC OPERATING SPECIFICATIONS) Cont.
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
AC OPERATING SPECIFICATIONS
HIGH-SIDE DRIVER
rise time
trTG,
CI = 3nF, VBST - VDRN = 4.6V,
16 25
ns
fall time
tfTG
CI = 3nF, VBST - VDRN = 4.6V,
17 27
ns
propagation delay time,
TG going high
propagation delay time,
TG going low
LOW-SIDE DRIVER
rise time
tpdhTG
tpdlTG
CI = 3nF, VBST - VDRN = 4.6V,
C-delay=0
CI = 3nF, VBST - VDRN = 4.6V,
trBG
CI = 3nF, VV_5 = 4.6V,
35 56
ns
25 40
ns
20 32
ns
fall time
trBG
CI = 3nF, VV_5 = 4.6V,
18 29
ns
propagation delay time
BG going high
progagation delay time
BG going low
tpdhBGHI
tpdlBG
CI = 3nF, VV_5 = 4.6V,
DRN < 1V
CI = 3nF, VV_5 = 4.6V,
UNDER-VOLTAGE LOCKOUT
V_5 ramping up
V_5 ramping down
PRDY
tpdhUVLO
tpdlUVLO
EN is High
EN is High
EN is transitioning from low to
high
tpdhPRDY
V_5 > UVLO threshold, Delay
measured from EN > 2.0V to
PRDY > 3.5V
EN is transitioning from high to
low
tpdhUVLO
V_5 > UVLO threshold. Delay
measured from EN < 0.8V tp
PRDY < 10% of V_5
DSPS_DR
rise/fall time
propagation delay,
DSPS_DR going high
trDSPS_DR,
tfDSPS_DR
CI = 100pf, V_5 = 4.6V,
tpdhDSPS_DR
S_MOD goes high and
BG goes high or S_MOD goes low
propagation delay
DSPS_DR goes low
tpdlDSPS_DR S_MOD goes high and BG goes
low
OVERVOLTAGE PROTECTION
propagation delay
OVP_S going high
tpdhOVP_S V_5 = 4.6V, TJ = 125°C, OVP_S >
1.2V to BG > 90% of V_5
Note:
(1) This device is ESD sensitive. Use of standard ESD handling precautions is required.
45 72
ns
12 20
ns
10
us
10
us
10
µs
500 µs
20
ns
10
ns
10
ns
1
µs
4
© 2000 SEMTECH CORP.
652 MITCHELL ROAD NEWBURY PARK CA 91320
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