LTC3219
TYPICAL PERFORMANCE CHARACTERISTICS
T A = 25°C unless otherwise noted.
7.5
V BAT Shutdown Current
vs V BAT Voltage
425
1x Mode No Load V BAT Current vs
V BAT Voltage
420
6.5
415
5.5
4.5
3.5
2.5
T A = 25°C
T A = –40°C
T A = 85°C
410
405
400
395
390
385
380
1.5
2.9
3.3
3.7
4.1
4.5
4.9
5.3
375
2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4
V BAT VOLTAGE (V)
3219 G10
V BAT VOLTAGE (V)
3219 G11
10
1.5x Mode V BAT Current vs I CPO
(I VBAT – 1.5I CPO )
10
2x Mode V BAT Current vs I CPO
(I VBAT – 2I CPO )
V BAT = 3.6V
35
ULED Pin Current
vs ULED Pin Voltage
V BAT = 3.6V
8
6
4
2
8
6
4
2
30
25
20
15
10
5
0
0
50
100
150 200
I CPO (mA)
250
300
0
0
50
100
150 200
I CPO (mA)
250
300
0
0
0.06
0.12 0.18 0.24
ULED PIN VOLTAGE (V)
0.30
3219 G12
3219 G13
3219 G14
ULED Pin Dropout Voltage
9-LED ULED Display Ef?ciency vs
30
ULED Pin Current vs Input Code
20O
vs ULED Pin Current
V BAT = 3.6V
100
90
V BAT Voltage
25
160
80
20
15
120
70
60
50
10
5
80
40
40
30
9 LEDs AT 15mA/LED
20 (TYP V F AT 15mA = 3.2V
10 NICHIA NSCW100)
T A = 25°C
0
1
0A
13 1C 25 2E
INPUT CODE (HEX)
37
3F
0
0
4
8 12 16 20
ULED PIN CURRENT (mA)
24
28
0
3.0
3.5 4.0 4.5
V BAT VOLTAGE (V)
5.0
5.5
3219 G15
3219 G16
3219 G17
3219fa
5
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