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LTC3218 Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3218
Description  400mA Single Wire Camera LED Charge Pump
PDF  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3218 Datasheet(HTML) 4 Page - Linear Technology

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LTC3218
4
3218fb
TYPICAL PERFORMANCE CHARACTERISTICS
Flash ILED/ISET Current Ratio
vs ILED Current
(ENT = LOW, ENF = HIGH)
Flash ILED/ISET Current Ratio
vs ILED Current
(ENT = ENF = HIGH)
1x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
TEMPERATURE (°C)
–40
0
0.4
0.8
1.2
–15
10
35
60
1.6
1.8
0.2
0.6
1.0
1.4
85
3218 G04
VIN = 4.5V
VIN = 2.9V
ICPO = 50mA
VIN = 3.6V
TEMPERATURE (°C)
–40
0
2
4
6
–15
10
35
60
8
10
1
3
5
7
9
85
3218 G05
VIN = 3.6V
VIN (V)
2.9
4.5
3.3
3.7
4.1
3.1
3.5
3.9
4.3
3218 G06
960
980
1020
1040
1060
1100
1000
1080
T = –40°C
T = 25°C
T = 85°C
ILED CURRENT (mA)
50
1000
1200
1400
130
3218 G07
800
600
900
1100
1300
700
500
400
70
60
90
80
110 120
140
100
150
ILED CURRENT(mA)
100
1500
1900
2300
2700
150
200
250
300
350
3100
3500
1700
2100
2500
2900
3300
400
3218 G08
ILED CURRENT(mA)
100
2500
2900
3300
3700
150
200
250
300
350
4100
4500
2700
3100
3500
3900
4300
400
3218 G09
VIN (V)
2.9
4.5
3.3
3.7
4.1
3.1
3.5
3.9
4.3
3218 G11
RSETF = 10.2k
RSETF = 20k
RSETF = 40.2k
0
50
150
200
250
450
100
300
350
400
VIN (V)
2.9
4.5
3.3
3.7
4.1
3.1
3.5
3.9
4.3
3218 G12
RSETF = 10.2k
RSETF = 7.49k
RSETF = 20k
RSETF = 40.2k
0
50
150
200
250
450
100
300
350
400
Flash Mode ILED Current vs VIN
(ENT = LOW, ENF = HIGH)
Flash Mode ILED Current vs VIN
(ENT = ENF = HIGH)
Torch Mode ILED/ISET Current Ratio
vs ILED Current
2x Mode Charge Pump
Open-Loop Output Resistance
(2VIN – VCPO)/ICPO vs Temperature
VIN (V)
2.9
4.5
3.3
3.7
4.1
3.1
3.5
3.9
4.3
3218 G10
RSETT = 10.2k
RSETT = 7.49k
RSETT = 20k
RSETT = 40.2k
0
20
60
80
100
160
40
120
140
Torch Mode ILED Current vs VIN
TA = 25°C, unless otherwise noted.
Oscillator Frequency vs VIN



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