SC1464 View Datasheet(PDF) - Semtech Corporation
Part Name
Description
MFG CO.
'SC1464' PDF : 10 Pages View PDF
60mA PROGRAMMABLE FIXED
FREQUENCY CHARGE PUMP DOUBLER
SC1464
PRELIMINARY - August 11, 2000
ELECTRICAL CHARACTERISTICS
Unless specified, TA = -40°C to 85°C, EN = VIN, CBucket = 2.2µF(ESR = 0.1τ), CIN , COUT = 3.3µF(ESR = 1τ), VIN = 3V±5%, VOUT = 5.2V to 6.2V.
Parameter
Time to Regulation at
Turn-on(2)(3)
Input High Threshold
Input Low Threshold
Inrush Current(3)
Over Temperature
protection(3)
Over Temperature
Hysteresis(3)
Symbol
tON
Vih
Vil
IINRUSH
O.T.
O.T.H
Test Conditions
IO = 0 to 60 mA
freq = 260kHz
All input pins
All input pins
Upon application of VIN, Maximum
average current over 10 periods
MIN TYP MAX Units
420 1000 µs
1.3
V
0.4 V
750 mA
170
°C
10
°C
NOTES:
(1) All electrical characteristics are for the application circuit on page 2.
(2) Soft start functionality is performed along with short circuit protection. If VOUT is less than VIN - 200mV, then all
switches are turned off and VOUT is charged with a 70mA current source from VIN. When VOUT reaches VIN - 200mV,
then a current limit version of the switches are turned on until VOUT reaches VIN + a PMOS threshold, at which point
all switches are enabled.
(3) Guaranteed by design.
© 2000 SEMTECH CORP.
3
652 MITCHELL ROAD NEWBURY PARK CA 91320
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