SC250
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Quiescent Current
Shutdown Current
VDAC Regulated Output
Mode
VDAC Pass-Through
Mode Threshold
VDAC to VOUT Transfer
Ratio
RDS ON of Bypass
P-Channel FET
RDS ON of P-Channel
Switching FET
RDS ON of N-Channel
Switching FET
LX Leakage Current PMOS
LX Leakage Current NMOS
VOUT Pin Bypass
PMOS Leakage
Oscillator Frequency
(Fixed Frequency)
Oscillator Frequency
(Variable Frequency)
Logic Input High
Logic Input Low
Control Input Current - High
Control Input Current - Low
Enable Transient
Over/Undershoot
Enable Transient Settling
Time
VDAC Transient
Over/Undershoot
VDAC Transient Settling
Time
Symbol
IQ
ISD
VDAC
VDAC PT
GV
RPASS
RDSP
RDSN
ILXP
ILXN
ILVOUT
fOSC
fOSCV
VIH
VIL
IIH
IIL
OSEN
tEN-ST
OSVDAC
tVDAC-ST
Conditions
Normal Mode (VDAC < 1V)
Bypass Mode (VDAC > 1.4V)
LX = open, EN = GND, VOUT = open,
TA= 25°C
VIN = 4.2V
VDAC Rising
VDAC Falling
IOUT = 100mA, VIN = 3V, VDAC= 1.4V
IOUT = 100mA, VIN = 3V
IOUT = 100mA, VIN = 3V
VIN = 3.6V, LX = 0V, EN = GND
VIN = 3.6V, LX = 3.6V, EN = GND
VIN = 3.6V, VOUT = 0V, EN = GND
VDAC > 0.2V
VDAC = 0.1V
VDAC/EN =3.6V
VDAC/EN = GND
Min
0.10
1.28
1.20
0.85
0.65
1.6
© 2006 Semtech Corp.
3
PRELIMINARY
Typ Max Units
1.5
mA
1
0.1
1
μA
1.20
V
1.37
V
1.3
3
V/V
75
mΩ
400
mΩ
250
mΩ
2
μA
2
μA
2
μA
1
1.15 MHz
MHz
V
0.6
V
±2
μA
±2
μA
20
%
40
μs
20
%
40
μs
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