SC1104A(2001) Ver la hoja de datos (PDF) - Semtech Corporation
Número de pieza
componentes Descripción
Fabricante
SC1104A Datasheet PDF : 7 Pages
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SC1104A/B
POWER MANAGEMENT
PRELIMINARY
Electrical Characteristics
Unless specified: A: VCC = 12 ± 0.6V, VBST = 23 ± 1V, VOUT = 3.3V, TA = 25oC. B: VCC = 5 ± 0.25V, VBST = 12 ± 0.6V, VOUT = 2.0V, TA = 25oC
Parameter
Symbol
Conditions
Min
Typ
Max Units
Ramp Valley Voltage
Maximum Duty Cycle
MOSFET Drivers
VV
dcMAX
4.75V ≤ VCC ≤ 12.6V
VCC = 12V (300kHz)
VCC = 5V (600kHz)
1.0
V
95
%
90
DH Sink/Source Current
IDH
d.c. < 2%, tPW < 100µs
0.7
A
SC1104A
VGS = 4.5V (src)
DL Sink/Source Current
IDL
SC1104A
VGS = 2.5V (snk)
0.7
DH Sink/Source Current
IDH
d.c. < 2%, tPW < 100µs
0.5
A
SC1104B
VGS = 4.5V (src)
DL Sink/Source Current
IDL
SC1104B
VGS = 2.5V (snk)
0.5
DH Rise/Fall Time
tr, tf
DL Rise/Fall Time
tr, tf
Dead Time
tdt
DH Minimum Off Time
tOFF
Reference Section
CL = 3000pF, See Fig. 2
CL = 4000pF, See Fig. 2
See Fig. 2
4.75V ≤ Vcc ≤ 12.6V
50
ns
50
80
ns
160
Reference Voltage
V
REF
4.75V ≤ Vcc ≤ 12.6V
0.990 1.000 1.010
V
Reference Accuracy
-40 < TA < 85°C
-1
1
%
Current Limit
Trip Voltage
Soft-Start/Enable
Vtrp
4.75V < Vcc < 12.6V
180
200
220
mV
Vtrp = Vcc - VPHASE
SS Source Current
ISRC
SS Sink Current
ISNK
Enable Input Threshold
VCOMP < 2.5V
VCOMP > 0.5V
1.5
µA
1.5
1
V
Enable Input Current
Under Voltage Lockout
VCOMP = 0.8V
2
mA
UVLO Threshold
Vth
Thermal Shutdown
-40< TA < 85°C
3.9
4.15
4.5
V
Over Temperature Trip Point TOTP
150
°C
Note: 1. This device is ESD sensitive. Use of standard ESD handling precautions is required.
© 2001 Semtech Corp.
3
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