LTC3207/LTC3207-1
TYPICAL PERFORMANCE CHARACTERISTICS
2x Mode Charge Pump Open-Loop
Output Resistance vs Temperature
(2V
BAT
-V
CPO
) / I
CPO
5.0
OPEN LOOP OUTPUT RESISTANCE (Ω)
4.8
4.6
4.4
4.2
4.0
3.8
3.6
3.4
3.2
3.0
–40
–15
35
10
TEMPERATURE (°C)
60
85
3207 G07
T
A
= 25°C unless otherwise noted
Oscillator Frequency
vs V
BAT
Voltage
875
T
A
= –40°C
FREQUENCY (kHz)
2x Mode CPO Voltage vs I
CPO
5.2
5.1
5.0
CPO VOLTAGE (V)
4.9
4.8
4.7
4.6
4.5
4.4
4.3
4.2
0
C2 = C3 = 2.2µF
C4 = 4.7µF
100
300
200
I
CPO
(mA)
400
500
3207 G08
V
BAT
= 3V
V
CPO
= 4.8V
C2 = C3 = 2.2µF
C4 = 4.7µF
3.6V
3.5V
3.4V
3.3V
3.2V
3.1V
V
BAT
= 3V
850
825
T
A
= 85°C
T
A
= 25°C
800
775
2.9
3.3
4.5
4.1
4.9
3.7
V
BAT
VOLTAGE (V)
5.3
3207 G09
V
BAT
Shutdown Current
vs V
BAT
Voltage
7.5
V
BAT
SHUTDOWN CURRENT (µA)
6.5
T
A
= –40°C
V
BAT
CURRENT (µA)
5.5
T
A
= 85°C
4.5
3.5
2.5
1.5
2.9
T
A
= 25°C
500
495
490
485
480
475
470
465
460
455
3.3
4.5
4.1
4.9
3.7
V
BAT
VOLTAGE (V)
5.3
3207 G10
1x Mode No Load V
BAT
Current
vs V
BAT
Voltage
20
1.5x Mode V
BAT
Current vs I
CPO
(IV
BAT
-1.5I
CPO
)
V
BAT
= 3.6V
V
BAT
CURRENT (mA)
15
10
5
450
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4
V
BAT
VOLTAGE (V)
3207 G11
0
0
100
300
200
I
CPO
(mA)
400
500
3207 G12
2x Mode V
BAT
Current vs I
CPO
(IV
BAT
- 2I
CPO
)
25
V
BAT
= 3.6V
450
400
CAM PIN CURRENT (mA)
CAM Pin Current
vs CAM Pin Voltage
V
BAT
= 3.6V
450
400
CAM LED CURRENT (mA)
350
300
250
200
150
100
50
0
0.2
0.6
0.8
0.4
CAM PIN VOLTAGE (V)
1.0
3207 G14
CAM LED Current
vs Input Code
20
V
BAT
CURRENT (mA)
350
300
250
200
150
100
50
15
10
5
0
0
100
200
300
400
I
CPO
(mA)
500
600
3207 G13
0
0.0
0 1 2 3 4 5 6 7 8 9 A B C D E F
INPUT CODE (HEX)
3207 G15
3207fc
5
LINER [ LINEAR TECHNOLOGY ]
