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| 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)： | 5/17頁 |
| 文件大小： | 333K |
| 代理商： | MAX1984 |
M
Ultra-High-Efficiency White
LED Drivers
_______________________________________________________________________________________
5
Note 1:
Current variation is caused by the current source voltage changes.
Note 2:
Measurement is with respect to 100% of the programmed LED output current.
Note 3:
Specifications to -40
°
C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1; V
IN
= 3.3V, SETI = BITA = BITB = BITC = SEL = IN, MODE = GND, C
OUT
= 4.7μF, C
REF
= 0.22μF,
T
A
= -40
°
C to
+85
°
C
, unless otherwise noted.) (Note 3)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
LD1 to LD8 Regulation Voltage
SETI = IN, I
LX
= 120mA (MAX1984),
110mA (MAX1985), 98mA (MAX1986)
80
120
mV
SETI High-Level Threshold
(18mA LED Default Current)
SETI Low-Level Threshold
(0.5mA LED Default Current)
SETI Output Current
OUTPUT CURRENT SOURCE
LD1 to LD8 On-Resistance
LD1 to LD8 Current-Source
Compliance
DIGITAL BRIGHTNESS CONTROL
2-Bit Control DAC LSB
2.7V < V
IN
< 5.5V
V
IN
- 0.4
V
2.7V < V
IN
< 5.5V
50
125
mV
SETI = GND
40
100
μA
I
LD_
= 25mA, V
OUT
= 3.5V
BITA = BITB = BITC = IN, 80mV < V
LD_
< 1V (Note 1)
4
8
%
MODE = SETI = BITB = IN, BITA = BITC = GND
SETI = BITC = IN, MODE = BITA = BITB = GND
(Note 2)
26
39
%
3-Bit Control DAC LSB
7
21
%
DPWM BRIGHTNESS CONTROL
DPWM Input Supply Range
DPWM Shutdown Duty Cycle
MODE = BITC = IN
BITC = GND
2.3
3
5.5
7
V
%
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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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