LTC3216 View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
LTC3216
Linear Technology
'LTC3216' PDF : 12 Pages View PDF
LTC3216
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise specified)
1x Mode Charge Pump Open-
Loop Output Resistance vs
Temperature
0.31
ICPO = 200mA
0.29
0.27
VIN = 3.6V
0.25
VIN = 3.3V
VIN = 3.9V
0.23
0.21
0.19
0.17
0.15
–40
–15 10
35
TEMPERATURE (°C)
60
85
3216 G04
1.5x Mode Charge Pump
Open-Loop Output Resistance
(1.5VIN – VCPO)/ICPO vs Temperature
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4 VIN = 3V
VCPO = 4.2V
0.2 CIN = C1 = C2 = 2.2μF
CCPO = 4.7μF
0
–40 –15
10
35
TEMPERATURE (°C)
60
85
3216 G05
2x Mode Charge Pump
Open-Loop Output Resistance
(2VIN – VCPO)/ICPO vs Temperature
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
VIN = 3V
VCPO = 4.8V
0.2 CIN = C1 = C2 = 2.2μF
CCPO = 4.7μF
0
–40 –15 10
35
60
85
TEMPERATURE (°C)
3216 G06
Input Shutdown Current
vs Input Voltage
4.0
3.5
TA = 25°C
3.0
TA = 85°C
2.5
TA = –40°C
2.0
1.5
1.0
0.5
0
2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
INPUT VOLTAGE (V)
3216 G07
Oscillator Frequency
vs Supply Voltage
930
920
910
TA = 25°C
900
TA = –40°C
890
880
TA = 85°C
870
860
850
840
2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
SUPPLY VOLTAGE (V)
3216 G08
Efficiency vs VIN
100
90
80
200mA
70
400mA
600mA
60
50
ILED = 800mA
40
30
20
10
LED = LXCL-PWF1 LUMILEDS
0
2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4
VIN (V)
3216 G09
ISET/ILED Current Ratio vs ILED
Current
3400
1.5x Mode CPO Output Ripple
3350
3300
3250
3200
TA = –40°C
TA = 25°C
TA = 85°C
VCPO
50mV/DIV
A/C COUPLED
4
3150
3100
0 100 200 300 400 500 600 700 800 900
ILED CURRENT(mA)
3216 G10
VIN = 3.6V
500ns/DIV
ICPO = 200mA
3216 G11
3216fc
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