SC1462 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
SC1462 Datasheet PDF : 10 Pages
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SC1462
POWER MANAGEMENT
Electrical Characteristics (Cont.)
Parameter
Symbol
Conditions
Min Typ Max Units
Short Circuit Current
ISC
VOUT = 0V
200
mA
Output Ripple (pk-pk)(3)(4)
VR
IOUT = 45mA, VIN = 2.5V
75
mV
Power Efficiency(3)
η
IOUT = 45mA, VIN = 2.5V
86
%
Maximum Output Voltage(4)
Time to Regulation at
Turn-On(5)
VOUT
tON
IOUT = 0mA
IOUT = 0 to 60mA, VIN = 3.6V
2×VIN
V
500
μs
Input High Threshold
VIN
SHDN pin, 2.5V ≤ VIN ≤ 5.5V
1.6
V
Input Low Threshold
VIL
SHDN pin, 2.5V ≤ VIN ≤ 5.5V
0.4 V
Over-Temperature Protection(4)
TOT
140
°C
Over-Temperature Hystereis(4)
Hysteresis
20
°C
Notes:
1) The internal switch resistance, the capacitor ESR and the oscillator’s switching frequency all contribute to ROUT.
See the CAPACITOR SELECTION section on Page 6 for information on applying the ROUT specification.
2) The parameter RSW is equal to the total resistance of all 4 internal switches. See the CAPACITOR SELECTION section for information
on applying the RSW specification. The parameter was calculated from actual output resistance and the equation on Page 6 for ROUT.
3) All electrical characteristics are for the Typical Application Circuit on Page 1.
4) Guaranteed by design.
5) Soft start functionality is performed along with short circuit protection. If VOUT is less than VIN - 200mV, then all switches are turned off
and V is charged with a 200mA current source from V . When V reaches V - 200mV all switches are enabled.
OUT
IN
OUT
IN
© 2005 Semtech Corp.
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