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LTC3208 Datenblatt(PDF) 5 Page - Linear Technology

Teilenummer LTC3208
Bauteilbeschribung  High Current Software Confi gurable Multidisplay LED Controller
PDF  24 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3208 Datenblatt(HTML) 5 Page - Linear Technology

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LTC3208
5
3208fa
LOAD CURRENT (mA)
4.8
4.6
4.4
4.2
4.0
3.8
3.6
100
200
300
400
3208 G07
500
0
C2 = C3 = 2.2
µF
C4 = 4.7
µF
TA = 25°C
3.6V
3.5V
3.4V
3.3V
3.2V
3.1V
VBAT = 3V
TEMPERATURE (
°C)
–40
2.8
2.6
2.4
2.2
2.0
1.8
1.6
60
3208 G08
–15
10
35
85
VBAT = 3V
VCPO = 4.8V
C2 = C3 = 2.2
µF
C4 = 4.7
µF
TYPICAL PERFOR A CE CHARACTERISTICS
1.5x Mode CPO Voltage
vs Load Current
2x Mode Charge Pump Open-
Loop Output Resistance vs
Temperature (2VBAT – VCPO)/ICPO
2x Mode CPO Voltage
vs Load Current
Oscillator Frequency
vs Supply Voltage
DVCC Shutdown Current
vs DVCC Voltage
VBAT Shutdown Current
vs VBAT Voltage
DVCC VOLTAGE (V)
2.7
0
0.1
0.2
0.3
0.4
3.0
3.3
3.6
3.9
3208 G11
4.2
4.5
VBAT = 3.6V
TA = –40°C
TA = 85°C
TA = 25°C
VBAT VOLTAGE (V)
3208 G12
2.7
1.5
2.5
3.5
4.5
5.5
6.5
7.5
8.5
3.0
3.3
3.6
3.9
4.2
4.5
DVCC = 3V
TA = –40°C
TA = 85°C
TA = 25°C
LOAD CURRENT (mA)
5.2
5.1
4.8
4.9
5.0
4.7
4.6
4.5
4.4
4.3
4.2
100 200 300
600 700
3208 G09
800
400 500
0
C2 = C3 = 2.2
µF
C4 = 4.7
µF
TA = 25°C
VBAT = 3V
VBAT = 3.1V
VBAT = 3.2V
VBAT = 3.3V
VBAT = 3.4V
VBAT = 3.5V
VBAT = 3.6V
VBAT SUPPLY VOLTAGE (V)
3208 G10
2.7
840
850
860
870
880
890
900
910
920
930
940
3.0
3.3
3.6
3.9
4.2
4.5
TA = –40°C
TA = 85°C
TA = 25°C
LED CURRENT (mA)
10
0
100
300
400
500
20
40
50
100
90
3208 G04
200
30
60
70
80
600
VBAT = 3.6V
TA = 25°C
TEMPERATURE (
°C)
–40
0.45
0.40
0.35
0.30
0.25
60
3208 G05
–15
10
35
85
ICPO = 200mA
VBAT = 3.9V
VBAT = 3.6V
VBAT = 3.3V
TEMPERATURE (
°C)
–40
2.5
2.3
2.1
1.9
1.7
1.5
60
3208 G06
–15
10
35
85
VBAT = 3V
VCPO = 4.2V
C2 = C3 = 2.2
µF
C4 = 4.7
µF
LED Pin Dropout Voltage
vs LED Pin Current
1x Mode Switch Resistance vs
Temperature
1.5x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
(1.5VBAT – VCPO)/ICPO



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