LM36010 Datasheet, PDF (7/37 Pages) Texas Instruments – Synchronous-Boost, Single-LED Flash Driver With 1.5-A High-Side Current Source

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LM36010
SNVSAN4A – APRIL 2017 – REVISED JULY 2017
6.8 Typical Characteristics
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.
1.5
85qC
25qC
1.2
-40qC
1.5
85qC
25qC
1.2
-40qC
0.9
0.9
0.6
0.6
0.3
0.3
0
0x00 0x0F 0x1F 0x2F 0x3F 0x4F 0x5F
Brightness Code (hex)
ƒ_SW = 2 MHz
I_CL = 2.8 A
0x6F
0x7F
D001
Figure 2. LED Flash Current vs Brightness Code
0.8
Code 0x00
0.7
Code 0x07
Code 0x0F
0.6
Code 0x17
Code 0x1F
0.5
Code 0x27
Code 0x2F
0.4
Code 0x37
Code 0x3F
0.3
0.2
0.1
0
2.5
3
3.5
4
4.5
5
V_IN (V)
ƒ_SW = 2 MHz
I_CL = 2.8 A
5.5
D003 ^.
Figure 4. LED Flash Current vs Input Voltage
1.6
1.52
1.44
1.36
1.28
1.2
1.12
1.04
0.96
0.88
0.8
2.5
3
3.5
ƒ_SW = 2 MHz
I_CL = 1.9 A
85qC
25qC
-40qC
4
4.5
5
5.5
V_IN (V)
D005
I_FLASH = 1.5 A
Flash Time-out < 120 ms at 85°C
Figure 6. LED Flash Current vs Input Voltage
0
0x00 0x0F 0x1F 0x2F 0x3F 0x4F 0x5F
Brightness Code (hex)
ƒ_SW = 4 MHz
I_CL = 2.8 A
0x6F
0x7F
D002
Figure 3. LED Flash Current vs Brightness Code
1.6
Code 0x47
1.5
Code 0x4F
Code 0x57
1.4
Code 0x5F
Code 0x67
1.3
Code 0x6F
Code 0x77
1.2
Code 0x7F
1.1
1
0.9
0.8
2.5
3
3.5
4
4.5
5
5.5
V_IN (V)
D004
ƒ_SW = 2 MHz
I_CL = 2.8 A
Figure 5. LED Flash Current vs Input Voltage
1.6
1.52
1.44
1.36
1.28
1.2
1.12
1.04
0.96
0.88
0.8
2.5
3
ƒ_SW = 4 MHz
I_CL = 1.9 A
85qC
25qC
-40qC
3.5
4
4.5
5
5.5
V_IN (V)
D006
I_FLASH = 1.5 A
Flash Time-out < 120 ms at 85°C
Figure 7. LED Flash Current vs Input Voltage
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