LTC3214EDD 데이터 시트보기 (PDF) - Linear Technology
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LTC3214EDD Datasheet PDF : 12 Pages
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LTC3214
TYPICAL PERFORMANCE CHARACTERISTICS (TA = 25°C unless otherwise specified)
2x Mode Charge Pump
Open-Loop Output Resistance
(2VIN – VCPO)/ICPO vs Temperature
5
4
3
2
1 VIN = 3.6V
CIN = C1 = C2 = 2.2μF
CCPO = 4.7μF
0
–40 –15
10
35
60
85
TEMPERATURE (°C)
3216 G05
Input Shutdown Current
vs Input Voltage
4.5
4.0
TA = –40°C
3.5
TA = 25°C
3.0
TA = 85°C
2.5
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)
3214 G06
Oscillator Frequency
vs Supply Voltage
910
900
TA = –40°C
890
TA = 25°C
880
TA = 85°C
870
860
850
840
830
2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
SUPPLY VOLTAGE (V)
3214 G07
Efficiency vs VIN
100
100mA 200mA
90
300mA
80
70
60
50mA
50
40
30
20
10 LED = AOT2015
VF = 2.9V TYP AT 100mA
0
2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
VIN (V)
3215 G08
ISET/ILED Current Ratio
vs ILED Current
3300
3200
3100
3000
2900
25°C
85°C
–40°C
2800
2700
0
100 200 300 400 500
ILED CURRENT (mA)
3214 G09
ILED Current vs Input Voltage
600
500
7.15k
400
300
11.8k
200
17.4k
36.6k
100
72.2k
0
2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5
VIN (V)
3214 G10
1.5x Mode CPO Output Ripple
2x Mode CPO Output Ripple
VCPO
50mV/DIV
VIN = 3.6V
ICPO = 200mA
500ns/DIV
3214 G11
VCPO
50mV/DIV
A/C COUPLED
VIN = 3.6V
ICPO = 400mA
500ns/DIV
3214 G12
3214fb
4
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