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LTC3240-3.3 数据表(PDF) 3 Page - Linear Technology

部件名 LTC3240-3.3
功能描述  3.3V/2.5V Step-Up/ Step-Down Charge Pump DC/DC Converter
Download  12 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC3240-3.3 数据表(HTML) 3 Page - Linear Technology

  LTC3240-3.3_15 Datasheet HTML 1Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 2Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 3Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 4Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 5Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 6Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 7Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 8Page - Linear Technology LTC3240-3.3_15 Datasheet HTML 9Page - Linear Technology Next Button
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background image
LTC3240-3.3/LTC3240-2.5
3
3240fb
Oscillator Frequency vs Supply
Voltage (Doubler Mode)
⎯S⎯H⎯D⎯N Threshold Voltage
vs Supply Voltage
Short-Circuit Current
vs Supply Voltage
Start-Up Time vs Supply Voltage
Load Regulation (LTC3240-3.3)
Load Regulation (LTC3240-2.5)
TYPICAL PERFOR A CE CHARACTERISTICS (T
A = 25°C, CFLY = CIN = 1µF, COUT = 4.7µF
unless otherwise noted)
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: The LTC3240-3.3/LTC3240-2.5 are guaranteed to meet
performance specifications from 0°C to 85°C. Specifications over the
– 40°C to 85°C operating temperature range are assured by design,
characterization and correlation with statistical process controls.
Note 3: ROL ≡ (2VIN – VOUT)/IOUT
Note 4: Failure to solder the exposed backside of the package to a PCB
ground plane will result in a thermal resistance much higher than 80°C/W.
The
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C, ⎯S⎯H⎯D⎯N = VIN, CFLY = 1µF, CIN = 1µF, COUT = 4.7µF unless otherwise noted.
ELECTRICAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
ROL
Effective Open-Loop
Output Resistance
Doubler Mode
LTC3240-3.3
VIN = 1.8V, VOUT = 3V
7.5
Ω
LTC3240-2.5
VIN = 1.8V, VOUT = 2.25V
8.0
Ω
(Note 3)
SUPPLY VOLTAGE (V)
1.7
400
500
600
4.7
3240 G03
300
200
2.7
3.7
2.2
5.2
3.2
4.2
5.7
100
0
700
VIN (V)
400
600
800
1000
500
700
900
2
2.4
2.8
3.2
3240 G04
3.6
1.8
1.6
2.2
2.6
3
3.4
ILOAD = 50mA
SUPPLY VOLTAGE (V)
1.8
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.2
2.6
3.0
3.4
3240 G01
3.8
–40
°C
85
°C
25
°C
SUPPLY VOLTAGE (V)
1.80
0.6
0.8
1.0
3.30
4.30
5.80
3240 G02
0.4
0.2
0
2.30 2.80
3.80
4.80 5.30
–40
°C
SHUTDOWN
HYSTERESIS
85
°C
25
°C
LOAD CURRENT (mA)
0
3.30
3.35
120
3240 G05
3.25
3.20
30
60
90
150
3.40
VIN = 3.7V
VIN = 2.5V
VIN = 1.8V
LOAD CURRENT (mA)
0
2.50
2.55
120
3240 G06
2.45
2.40
30
60
90
150
2.60
VIN = 2.4V
VIN = 2.8V
VIN = 1.8V


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