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參數(shù)資料
| 型號： | MAX1912 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1.5x/2x High-Efficiency White LED Charge Pumps |
| 中文描述： | 1.5倍/2倍、高效率、白光LED驅(qū)動電荷泵 |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 788K |
| 代理商： | MAX1912 |
General Description
The MAX1910/MAX1912 power LEDs with a regulated
output voltage or current (up to 120mA) from an unreg-
ulated input supply (2.7V to 5.3V). These are complete
DC-DC converters requiring only four small ceramic
capacitors and no inductors. Input ripple is minimized
by a unique regulation scheme that maintains a fixed
750kHz switching frequency over a wide load range.
Also included are logic-level shutdown and soft-start to
reduce input current surges at startup.
The MAX1910 has two automatically selected operating
modes: 1.5x and 2x. 1.5x mode improves efficiency at
higher input voltages, while 2x mode maintains regula-
tion at lower input voltages. The MAX1912 operates
only in 1.5x mode.
The MAX1910 and the MAX1912 are available in a
space-saving 10-pin μMAX package.
Applications
White LED Backlighting
Cellular Phones
PDAs
Digital Still Cameras
MP3 Players
Backup-Battery Boost Converters
Features
High-Efficiency 1.5x/2x Charge Pumps
Low Input Ripple with 750kHz Operation
200mV Current-Sense Threshold Reduces
Power Loss
Current- or Voltage-Regulated Charge Pump
Up to 120mA Output Current
No Inductors Required
Small Ceramic Capacitors
Regulated ±5% LED Current
Load Disconnected in Shutdown
1μA Shutdown Current
Small 10-Pin μMAX Package
M
1.5x/2x High-Efficiency White LED
Charge Pumps
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
Ordering Information
1
2
3
4
5
10
9
8
7
6
SET
C1-
IN2
C2+
C1+
C2-
IN1
GND
MAX1910
MAX1912
μ
MAX
TOP VIEW
OUT
SHDN
Pin Configuration
19-2290; Rev 2; 3/04
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
10 μMAX
10 μMAX
MAX1910
EUB
MAX1912
EUB
V
IN
C
IN
C1
C2
C
OUT
IN1
IN2
C1+
C1-
C2+
C2-
GND
SET
OUT
SHDN
MAX1910
MAX1912
Typical Operating Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1912EUB | 1.5x/2x High-Efficiency White LED Charge Pumps |
| MAX1927-MAX1928 | Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters |
| MAX1927REUB | Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters |
| MAX1928EUB25 | Low-Output-Voltage, 800mA, PWM Step-Down DC-DC Converters |
| MAX1927 | Fixed-Point Digital Signal Processor 288-FCBGA |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1912EUB | 功能描述:LED照明驅(qū)動器 1.5x/2x White LED 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 |
| MAX1912EUB+ | 功能描述:LED照明驅(qū)動器 1.5x/2x White LED 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 |
| MAX1912EUB+T | 功能描述:LED照明驅(qū)動器 1.5x/2x White LED 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 |
| MAX1912EUB-T | 功能描述:LED照明驅(qū)動器 1.5x/2x White LED 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 |
| MAX1916EZT | 制造商:Maxim Integrated Products 功能描述:LOW-DROPOUT CONSTANT-CURRENT TRIPLE WHITE LED BIAS SUPPLY - Rail/Tube |
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