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LTC3221 Scheda tecnica(PDF) 3 Page - Linear Technology

Il numero della parte LTC3221
Spiegazioni elettronici  Micropower, Regulated Charge Pump in 2 횞 2 DFN
PDF  12 Pages
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Produttore elettronici  LINER [Linear Technology]
Homepage  http://www.linear.com
Logo LINER - Linear Technology

LTC3221 Scheda tecnica(HTML) 3 Page - Linear Technology

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LTC3221/
LTC3221-3.3/LTC3221-5
3
3221f
110
130
90
50
70
150
SUPPLY VOLTAGE (V)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
3221 G06
TA = –45°C
TA = 90°C
TA = 25°C
TEMPERATURE (
°C)
–50
–25
0
25
75
50
100
125
3221 G05
VIN = 3.2V
0.7
0.8
0.6
0.4
0.5
0.9
VIN = 2.5V
VIN = 1.8V
TEMPERATURE (
°C)
–50
–25
0
25
75
50
100
125
3221 G04
VIN = 3.2V
VIN = 2.5V
VIN = 1.8V
0.7
0.8
0.6
0.4
0.5
0.9
0.7
0.8
0.6
0.4
0.5
0.9
HIGH-TO-LOW THRESHOLD
LOW-TO-HIGH THRESHOLD
SUPPLY VOLTAGE (V)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
3221 G03
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VIN = 2.5V (LTC3221-3.3/LTC3221) or 3V (LTC3221-5), ⎯S⎯H⎯D⎯N = VIN,
CFLY = 1µF, CIN = 2.2µF, COUT = 2.2µF, unless otherwise specified.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC3221EDC-X is guaranteed to meet performance
specifications from 0°C to 70°C. Specificaiton over the – 40°C to 85°C
operating temperature range are assured by design, characterization and
correlation with statisitical process controls.
Note 3: Guaranteed by design, not subject to test.
Note 4: ROL = (2VIN – VOUT)/IOUT.
ELECTRICAL CHARACTERISTICS
Oscillator Frequency vs
Supply Voltage
Oscillator Frequency vs
Temperature
⎯S⎯H⎯D⎯N Threshold Voltage vs
Supply Voltage
⎯S⎯H⎯D⎯N LO-to-HI Threshold vs
Temperature
⎯S⎯H⎯D⎯N HI-to-LO Threshold vs
Temperature
Short-Circuit Current vs
Supply Voltage
TYPICAL PERFOR A CE CHARACTERISTICS
SUPPLY VOLTAGE (V)
1.5
800
750
700
500
450
600
550
650
400
2.0
2.5
3.0
3.5
4.0
4.5
3221 G01
800
750
700
500
450
600
550
650
400
TEMPERATURE (
°C)
–50
–25
0
25
75
50
100
125
3221 G02
VIN = 4.5V
VIN = 2.5V
VIN = 1.8V
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LTC3221-3.3/LTC3221-5
I⎯S⎯H⎯D⎯N
Shutdown Supply Current
VOUT = 0V, ⎯S⎯H⎯D⎯N = 0V
●
1µA
VIH
⎯S⎯H⎯D⎯N Input Threshold (High)
●
1.3
V
VIL
⎯S⎯H⎯D⎯N Input Threshold (Low)
●
0.4
V
IIH
⎯S⎯H⎯D⎯N Input Current (High)
⎯S⎯H⎯D⎯N = VIN
●
–1
1
µA
IIL
⎯S⎯H⎯D⎯N Input Current (Low)
⎯S⎯H⎯D⎯N = 0V
●
–1
1
µA
LTC3221/LTC3221-3.3/LTC3221-5
fOSC
Switching Frequency
VOUT = 2.5V
600
kHz
VUVLO
UVLO Threshold
1V



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