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LTC3240-3.3 数据表(PDF) 4 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) 4 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
4
3240fb
No-Load Input Current
vs Supply Voltage (LTC3240-3.3)
Mode Switch Threshold
vs Load Current (LTC3240-3.3)
Efficiency vs Supply Voltage
(LTC3240-3.3)
VOUT Soft-Start (LTC3240-3.3)
Output Noise/Ripple
(LTC3240-3.3)
TYPICAL PERFOR A CE CHARACTERISTICS (TA = 25°C, CFLY = CIN = 1µF, COUT = 4.7µF
unless otherwise noted)
Effective Open-Loop Resistance
vs Temperature (LTC3240-3.3)
TEMPERATURE (
°C)
–40
8
9
10
60
3240 G07
7
6
5
–15
10
35
85
VIN = 1.8V
VOUT = 3V
SUPPLY VOLTAGE (V)
1.7
0
10
30
40
50
100
70
2.7
3.7
4.2
3240 G08
20
80
90
60
2.2
3.2
4.7
5.2
5.7
No-Load Input Current
vs Supply Voltage (LTC3240-2.5)
SUPPLY VOLTAGE (V)
1.7
0
10
30
40
50
100
70
2.7
3.7
4.2
3240 G09
20
80
90
60
2.2
3.2
4.7
5.2
5.7
ILOAD (mA)
0
3.60
3.70
160
3240 G10
3.50
3.40
40
80
120
20
60
100
140
3.80
3.55
3.65
3.45
3.75
DOUBLER TO
LDO MODE
(VIN RISING)
LDO TO
DOUBLER MODE
(VIN FALLING)
Mode Switch Threshold
vs Load Current (LTC3240-2.5)
ILOAD (mA)
0
2.65
2.70
2.75
2.80
2.85
40
80
120
160
3240 G11
2.90
2.95
20
60
100
140
DOUBLER TO LDO
MODE (VIN RISING)
LDO TO DOUBLER
MODE (VIN FALLING)
SUPPLY VOLTAGE (V)
1.80
0
10
30
40
50
100
70
2.80
3.80 4.30
3240 G12
20
80
90
60
2.30
3.30
4.80 5.30 5.80
ILOAD = 40mA
ILOAD = 1mA
LDO TO DOUBLER
MODE (VIN FALLING)
DOUBLER TO LDO
MODE (VIN RISING)
VOUT
2V/DIV
200
µs/DIV
3240 G13
VIN = 2.4V
RLOAD = 66Ω
SHDN
2V/DIV
VOUT
20mV/DIV
AC COUPLED
500ns/DIV
3240 G14
VIN = 2.4V
ILOAD = 100mA


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