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LTC1682-3.3 Datasheet(PDF) 3 Page - Linear Technology

No. de pieza LTC1682-3.3
Descripción Electrónicos  Doubler Charge Pumps with Low Noise Linear Regulator
PDF  12 Pages
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Fabricante Electrónico  LINER [Linear Technology]
Página de inicio  http://www.linear.com
Logo LINER - Linear Technology

LTC1682-3.3 Datasheet(HTML) 3 Page - Linear Technology

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LTC1682/LTC1682-3.3/LTC1682-5
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
CPO (Charge Pump Output)
VIN = 1.8V, IOUT = 10mA
q
18
30
Ω
Output Resistance
VIN = 3V, IOUT = 10mA
q
13
20
Ω
VIN = 4.4V, IOUT = 10mA
q
11
17
Ω
VOUT Dropout Voltage (Note 3)
LTC1682, IOUT = 10mA, VOUT = 2.57V (Note 5)
q
100
160
mV
LTC1682/LTC1682-3.3, IOUT = 10mA, VOUT = 3.3V
q
75
120
mV
LTC1682/LTC1682-5, IOUT = 10mA, VOUT = 5V
q
50
90
mV
VOUT Enable Time
IOUT = 10mA
2
ms
VOUT Output Noise Voltage
LTC1682
IOUT = 10mA, 10Hz ≤ f ≤ 100kHz, VOUT = 5V
88
µVRMS
IOUT = 10mA, 10Hz ≤ f ≤ 2.5MHz, VOUT = 5V
800
µVP-P
LTC1682-3.3
IOUT = 10mA, 10Hz ≤ f ≤ 100kHz, CFILT = 1nF
58
µVRMS
IOUT = 10mA, 10Hz ≤ f ≤ 2.5MHz, CFILT = 1nF
500
µVP-P
LTC1682-5
IOUT = 10mA, 10Hz ≤ f ≤ 100kHz, CFILT = 1nF
64
µVRMS
IOUT = 10mA, 10Hz ≤ f ≤ 2.5MHz, CFILT = 1nF
600
µVP-P
VOUT Line Regulation
VIN = 3V to 4V, IOUT = 0mA (Note 6)
q
520
mV
VOUT Load Regulation
IOUT = 1mA to 10mA
q
310
mV
IOUT = 1mA to 50mA (Note 4)
10
mV
VOUT Shutdown Resistance
SHDN = 0V, Resistance Measured to Ground, VIN = 1.8V
q
150
350
Ω
SHDN = 0V, Resistance Measured to Ground, VIN = 4.4V
q
50
150
Ω
SHDN Input Threshold
VIN = 1.8V to 4.4V
q
0.4
1
1.6
V
SHDN Input Current
SHDN = VIN
q
–1
1
µA
SHDN = 0V
q
–1
1
µA
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The LTC1682C is guaranteed to meet specified performance from
0
°C to 70°C and is designed, characterized and expected to meet these
extended temperature limits, but is not tested at – 40
°C and 85°C. The
LTC1682I is guaranteed to meet the extended temperature limits.
Note 3: Dropout voltage is the minimum input/output voltage required to
maintain regulation at the specified output current. In dropout the output
voltage will be equal to: VCPO – VDROPOUT (see Figure 4).
Note 4: Operating conditions are limited by maximum junction
temperature. The regulated output specification will not apply for all
possible combinations of input voltage and output current. When
operating at maximum input voltage, the output current range may be
limited. When operating at maximum output current, the input voltage
range may be limited.
Note 5: Limited by the LDO disable switch point of 1.45VIN.
Note 6: The LTC1682 is set to 5V. The feedback current is 25
µA.
The q denotes specifications that apply over the full operating temperature
range, otherwise specifications are TA = 25°C. SHDN = VIN = 3V; C1 = 0.22µF; C2, C3, C4 = 4.7µF, unless otherwise noted.
ELECTRICAL CHARACTERISTICS



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