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參數(shù)資料
| 型號： | MAX1984 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | Ultra-High-Efficiency White LED Drivers |
| 中文描述： | 超高效率白光LED驅(qū)動器 |
| 文件頁數(shù)： | 7/17頁 |
| 文件大?。?/td> | 333K |
| 代理商： | MAX1984 |
M
Ultra-High-Efficiency White
LED Drivers
_______________________________________________________________________________________
7
Typical Operating Characteristics (continued)
(Circuit of Figure 1; V
IN
= 3.3V, SETI = IN, MODE = IN, T
A
= +25
°
C, unless otherwise noted.)
TOTAL EFFICIENCY vs. INPUT VOLTAGE
(4mA LED CURRENT )
M
INPUT VOLTAGE (V)
E
5.0
4.5
4.0
3.5
3.0
50
60
70
80
90
100
40
2.5
5.5
8 LEDs
6 LEDs
4 LEDs
LED CURRENT vs. INPUT VOLTAGE
M
INPUT VOLTAGE (V)
L
5.0
4.5
4.0
3.5
3.0
24.5
25.0
25.5
26.0
24.0
2.5
5.5
R
SETI
= 278k
LED CURRENT MATCHING
M
LD_VOLTAGE (mV)
L
250
200
150
100
50
23
24
25
26
22
0
300
LD1 TO LD8
R
SETI
= 278k
STARTUP WAVEFORMS
A: BITA VOLTAGE, 5V/div
B: OUT VOLTAGE, 2V/div
C: INDUCTOR CURRENT, 100mA/div
D: LD_ CURRENT, 20mA/div
100
μ
s/div
C
B
A
5V
0
4V
2V
0
100mA
0
20mA
0
D
LED CURRENT vs. DPWM DUTY
M
DPWM DUTY (%)
L
80
60
40
20
5
10
15
20
25
0
0
100
THEORETICAL
ACTUAL
50kHz DPWM FREQUENCY
R
SETI
= 278k
MAXIMUM LED CURRENT
vs. SETI RESISTANCE
M
SETI RESISTANCE (k
)
M
1500
1000
500
15
20
25
30
10
0
2000
THEORETICAL
ACTUAL
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1984ETP | Ultra-High-Efficiency White LED Drivers |
| MAX1985ETP | Ultra-High-Efficiency White LED Drivers |
| MAX1986ETE | Ultra-High-Efficiency White LED Drivers |
| MAX1994ETM | Dual Step-Down Controllers Plus Linear- Regulator Controller for Notebook Computers |
| MAX1816 | Replaced by TMS320VC5506 : Digital Signal Processors 144-LQFP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1984ETP | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1984ETP+ | 功能描述:LED照明驅(qū)動器 High-Efficiency White LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1984ETP+T | 功能描述:LED照明驅(qū)動器 High-Efficiency White LED Driver RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1984ETP-T | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
| MAX1985ETP | 功能描述:LED照明驅(qū)動器 RoHS:否 制造商:STMicroelectronics 輸入電壓:11.5 V to 23 V 工作頻率: 最大電源電流:1.7 mA 輸出電流: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SO-16N |
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