LTC3219_15 Datasheet, PDF (5/20 Pages) Linear Technology – 250mA Universal Nine Channel LED Driver

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