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參數(shù)資料
| 型號(hào)： | MP1519 |
| 廠商： | Monolithic Power Systems, Inc. |
| 英文描述： | 1x, 1.5x, 2x High Efficiency Charge Pump 4 White LED Driver |
| 中文描述： | 1倍，1.5倍，2倍高效充電泵4白光LED驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 216K |
| 代理商： | MP1519 |
MP1519 – 1X, 1.5X, 2X CHARGE PUMP 4 WHITE LED DRIVER
MP1519 Rev. 1.9
7/27/2006
www.MonolithicPower.com
5
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
2006 MPS. All Rights Reserved.
TM
OPERATION
The MP1519 is a charge pump that drives 4
LEDs from a 2.5V to 5.5V input voltage. It
automatically switches between 1x, 1.5x and 2x
charge pump modes to optimize efficiency while
maintaining LED current regulation.
Four drivers independently regulate the current
through the LEDs, therefore matching LEDs are
not required.
The MP1519 employs soft switching and
soft-start to prevent overloading the battery
source at turn-on and charge pump mode
switching.
While operating, the MP1519 continually
monitors the LED current and battery voltage
and automatically switches between charge
pump modes to retain LED current regulation
through all LEDs as the battery voltage
fluctuates.
CURRENT
GENERATOR
CONTROLLER
LED
ENABLE
ISET
SHUTDOWN
RADJ
GND
3, 10
EN
12
BATT
5, 13
11
CHARGE PUMP
1.25V
BANDGAP
REFERENCE
BATTERY
SENSOR
PUMP
MODE
SOFT
START
LED4
LED3
LED2
LED1
FAULT
CURRENT
SOURCE
FAULT
CURRENT
SOURCE
FAULT
CURRENT
SOURCE
FAULT
CURRENT
SOURCE
C2B
BATT
ENABLE
C2A
C1B
C1A
LEDC
LED4
LED3
LED2
LED1
9
6
7
4
8
1
16
15
14
Figure 1—Functional Block Diagram
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MP1519DQ | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1x, 1.5x, 2x High Efficiency Charge Pump 4 White LED Driver |
| MP1519DQL | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1x, 1.5x, 2x High Efficiency Charge Pump 3 White LED Driver |
| MP1519DQ-LF-P | 功能描述:電荷泵 4 LED, 2.5 - 5.5Vin Charge pump driver RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MP1519DQ-LF-Z | 功能描述:電荷泵 4 LED, 2.5 - 5.5Vin Charge pump driver RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 輸出電壓:- 1.5 V to - 5.5 V, 3 V to 11 V 輸出電流:100 mA 電源電流:1 mA 最大工作溫度:+ 70 C 封裝 / 箱體:SOIC-8 Narrow 封裝:Tube |
| MP1519DQTL | 制造商:MPS 制造商全稱:Monolithic Power Systems 功能描述:1x, 1.5x, 2x High Efficiency Charge Pump 3 White LED Driver |
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