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| SC1464 Datasheet, PDF (2/10 Pages) Semtech Corporation – 60mA PROGRAMMABLE FIXED FREQUENCY CHARGE PUMP DOUBLER | |||
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60mA PROGRAMMABLE FIXED
FREQUENCY CHARGE PUMP DOUBLER
SC1464
PRELIMINARY - August 11, 2000
ABSOLUTE MAXIMUM RATINGS
Parameter
Input Supply Voltage
Output Voltage
VOUT Short-Circuit Duration
Operating Ambient Temperature Range
Operating Junction Temperature
Storage Temperature Range
Lead Temperature (Soldering) 10 Sec
Thermal Temperature Junction to Ambient
Thermal Impedance Junction to Case
Symbol
VIN
VO
SC
TA
TJ
TSTG
TLEAD
°JA
°JC
Maximum
-0.3 to +4
-0.3 to +8
Indefinite
-40 to +85
-40 to +125
-65 to +150
300
185
47
Units
V
V
°C
°C
°C
°C
°C/W
°C/W
ELECTRICAL CHARACTERISTICS
Unless specified, TA = -40°C to 85°C, EN = VIN, CBucket = 2.2µF(ESR = 0.1Ï), CIN , COUT = 3.3µF(ESR = 1Ï), VIN = 3V±5%, VOUT = 5.2V to 6.2V.
Parameter
Symbol
Test Conditions
MIN TYP MAX Units
Input Supply Voltage
Input Supply Current
VIN
2.5
3.5
V
IIN
IO = 0 TF1 = 0, TF2 = 1, freq = 8kHz
45
55
µA
IO = 0 TF1 = 0, TF2 = 0, freq = 32kHz
270 330
IO = 0 TF1 = 1, TF2 = 0, freq = 260kHz
1.6
2
mA
IO = 0 TF1 = 1, TF2 = 1, freq = 1MHz
5.8
8
EN = GND
1
µA
Output Current
IO VI = 2.85, TF1 = 0, TF2 = 1. freq = 8kHz
5
VI = 2.85, TF1 = 0, TF2 = 0. freq = 32kHz
20
mA
VI = 2.85, TF1 = 1, TF2 = 0. freq = 260kHz 60
VI = 2.85, TF1 = TF2 = 1. freq = 1MHz
45
Cbucket = 220nF
Max. Output Voltage(3)
VOUT
IO = 0
2*VIN
V
Short Circuit Current
ISC
Output Ripple (pk-pk)(1)(3)
VR
VO = 0 to VIN - 1V, IO = IIN
IO = 60mA, Frequency = 260kHz
170 mA
150
mV
Power Efficiency
â£
IO = 60mA, TF1 = 1, TF2 = 0
85
%
Oscillator Frequency
OSC
TF1 = 0, TF2 = 1
7.82 8.50 9.18 kHz
TF1 = 0, TF2 = 0
30.18 32.80 35.42 kHz
TF1 = 1, TF2 = 0
241.13 262.10 283.07 kHz
TF1 = TF2 = 1
0.92 1.00 1.08 MHz
© 2000 SEMTECH CORP.
2
652 MITCHELL ROAD NEWBURY PARK CA 91320
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