LTC3215EDD View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LTC3215EDD' PDF : 14 Pages View PDF
LTC3215
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
VIN = 3.3V
0.25
VIN = 3.9V
0.23
0.21
0.19
0.17
0.15
–40
–15 10
35
60
85
TEMPERATURE (°C)
3216 G04
1.5x Mode Charge Pump
Open-Loop Output Resistance (1.5V
IN – 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
0 CCPO = 4.7µF
–40 –15
10
35
60
85
TEMPERATURE (°C)
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
0 CCPO = 4.7µF
–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
40
30
20
10 LED = LXCL-PWF1 LUMILEDS
VF = 3V TYP AT 200mA
0
2.8 3.0 3.2 3.4 3.6 3.8 4.0 4.2 4.4
VIN (V)
3216 G09
1.5x Mode CPO Output Ripple
2x Mode CPO Output Ripple
VCPO
50mV/DIV
A/C COUPLED
VIN = 3.6V
ICPO = 200mA
500ns/DIV
3216 G10
VCPO
20mV/DIV
A/C COUPLED
VIN = 3.6V
ICPO = 400mA
500ns/DIV
3216 G11
3215fc
4
Share Link: 
