LM36010 Datasheet, PDF (26/37 Pages) Texas Instruments – Synchronous-Boost, Single-LED Flash Driver With 1.5-A High-Side Current Source

LM36010
SNVSAN4A – APRIL 2017 – REVISED JULY 2017
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T_A = 25°C, V_IN = 3.6 V, C_IN = 10 µF, C_OUT = 10 µF, L = 1 µH, V_LED = 3.4 V, Flash Time-out = 320 ms and Thermal Scale-Back
(TSB) disabled, unless otherwise noted.
100
100
95
95
90
90
85
85
80
80
75
75
70
70
65
65
60
60
55
85qC
50
25qC
-40qC
45
2.5
3
3.5
ƒ_SW = 2 MHz
I_CL = 1.9 A
4
4.5
5
5.5
V_IN (V)
D034
I_FLASH = 1.2 A
Flash Time-out < 280 ms at 85°C
55
85qC
50
25qC
-40qC
45
2.5
3
3.5
ƒ_SW = 4 MHz
I_CL = 1.9 A
4
4.5
5
5.5
V_IN (V)
D035
I_FLASH = 1.2 A
Flash Time-out < 280 ms at 85°C
Figure 44. LED Flash Efficiency vs Input Voltage
Figure 45. LED Flash Efficiency vs Input Voltage
100
95
90
85
80
75
70
65
60
55
85qC
50
25qC
-40qC
45
2.5
3
3.5
ƒ_SW = 2 MHz
4
4.5
V_IN (V)
I_FLASH = 1.03 A
5
5.5
D036
I_CL = 1.9 A
Figure 46. LED Flash Efficiency vs Input Voltage
100
95
90
85
80
75
70
65
60
55
50
45
2.5
85qC
25qC
-40qC
3
ƒ_SW = 4 MHz
3.5
4
4.5
V_IN (V)
I_FLASH = 1.03 A
5
5.5
D037
I_CL = 1.9 A
Figure 47. LED Flash Efficiency vs Input Voltage
100
95
90
85
80
75
70
65
60
55
50
45
2.5
3
3.5
4
4.5
V_IN (V)
ƒ_SW = 2 MHz
I_FLASH = 1.03 A
85qC
25qC
-40qC
5
5.5
D038
I_CL = 2.8 A
Figure 48. LED Flash Efficiency vs Input Voltage
100
95
90
85
80
75
70
65
60
55
50
45
2.5
3
3.5
ƒ_SW = 4 MHz
85qC
25qC
-40qC
4
4.5
V_IN (V)
I_FLASH = 1.03 A
5
5.5
D039
I_CL = 2.8 A
Figure 49. LED Flash Efficiency vs Input Voltage
26
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