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LTC3217EUD Datasheet(PDF) 4 Page - Linear Technology

Part # LTC3217EUD
Description  600mA Low Noise Multi-LED Camera Light Charge Pump
Download  12 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3217EUD Datasheet(HTML) 4 Page - Linear Technology

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LTC3217
4
3217f
VBAT Shutdown Current
vs VBAT Voltage
Oscillator Frequency
vs Supply Voltage
Efficiency vs VBAT
VBAT VOLTAGE (V)
2.9
1.5
2.5
3.5
4.5
5.5
3.3
3.7
4.1
4.5
3217 G07
6.5
7.5
3.1
3.5
3.9
4.3
TA = 85°C
TA = 25°C
TA = –40°C
VBAT SUPPLY VOLTAGE (V)
2.9
880
890
910
920
930
980
950
3.3
3.7
3.9
3217 G08
900
960
970
940
3.1
3.5
4.1
4.3
4.5
TA = –40°C
TA = 25°C
TA = 85°C
VBAT (V)
3
0
10
30
40
50
100
70
3.4
3.8
4
3217 G09
20
80
90
60
3.2
3.6
4.2
4.4
TOTAL OUTPUT CURRENT
PLED/PIN
LED = 2015 HPW AOT
100mA
200mA
400mA
1.5x Mode CPO Output Ripple
2x Mode CPO Output Ripple
Charge Pump Mode Switching
and Input Current to Ground
(400mA Load)
VCPO
50mV/DIV
AC COUPLED
500ns/DIV
VBAT = 3.6V
ICPO = 400mA
CCPO = 2.2µF
3217 G10
VCPO
20mV/DIV
AC COUPLED
500ns/DIV
3217 G11
VBAT = 3.6V
ICPO = 400mA
CCPO = 2.2µF
VCPO
1V/DIV
IVBAT
500mA/DIV
0
EN1
5V/DIV
1ms/DIV
1x
NO LOAD
1x
DROPOUT
DROPOUT
1.5x
2x
(5V)
VIN = 3.6V
3217 G12
1x Mode Switch Resistance
vs Temperature
1.5x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
(1.5VBAT – VCPO)/ICPO
TEMPERATURE (
°C)
–40
0.35
0.40
0.45
0.50
0.55
0.60
0.65
–15
10
35
60
3217 G04
85
ICPO = 200mA
VBAT = 3.3V
VBAT = 3.9V
VBAT = 3.6V
TEMPERATURE (
°C)
–40
2.0
2.2
2.4
2.6
2.8
3.0
3.2
–15
10
35
60
3217 G05
85
VBAT = 3V
VCPO = 4.2V
C2 = C3 = C4 = 2.2
µF
2x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
(2VBAT – VCPO)/ICPO
TEMPERATURE (
°C)
–40
2.6
2.8
3.0
3.2
3.4
3.6
3.8
–15
10
35
60
3217 G06
85
VBAT = 3V
VCPO = 4.8V
C2 = C3 = C4 = 2.2
µF
TYPICAL PERFOR A CE CHARACTERISTICS TA = 25°C unless otherwise noted.


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