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| 型号： | MAX1575ETE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 恒定电流： | 是 |
| 拓扑： | 线性（LDO），切换式电容器（充电泵） |
| 输出数： | 6 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN-EP（4x4） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 85°C |
19-3097; Rev 2; 8/05
ATION
EVALU
AVAIL
KIT
ABLE
White LED 1x/1.5x Charge Pump
for Main and Sub-Displays
General Description
The MAX1575 charge pump drives up to four white
LEDs in the main display and up to two white LEDs in
the sub-display with regulated constant current for uni-
form intensity. By utilizing adaptive 1x/1.5x charge-
pump modes and very-low-dropout current regulators,
it achieves high efficiency over the full 1-cell lithium-
battery input voltage range. A 1MHz fixed-frequency
switching allows for tiny external components, and the
regulation scheme is optimized to ensure low EMI and
low input ripple.
The MAX1575 uses an external resistor to set the full-
scale 100% LED current. Two enable inputs, ENM and
ENS, are used for simple on/off controls for the main and
sub-displays, respectively. By repeatedly pulsing either
enable input, the LEDs can be dimmed in multiple steps
down to 5%. Once the desired brightness is set, the
MAX1575 maintains that brightness setting as long as
the enable input is kept high. If an enable input is kept
low for more than 2ms, the LED current for the respec-
tive display is set to zero. If both enable inputs are kept
low for more than 2ms, the MAX1575 enters shutdown.
The MAX1575 is available in a 16-pin 4mm x 4mm thin
Features
? Powers Main and Sub-Display LEDs
? 85% Average Efficiency (P LED / P BATT ) Over Li+
Battery Discharge
? 2% LED Current Matching
? Up to 30mA/LED Drive Capability
? Adaptive 1x/1.5x Mode Switchover
? Low Input Ripple and EMI
? Individual 5% to 100% Dimming Through
Single-Wire Serial Pulse Interface
? Low 0.1μA Shutdown Current
? 2.7V to 5.5V Supply Voltage Range
? Soft-Start Limits Inrush Current
? Output-Overvoltage Protection
? Thermal-Shutdown Protection
? 16-Pin Thin QFN 4mm x 4mm Package
Ordering Information
QFN package (0.8mm max height).
Applications
PART
MAX1575ETE
MAX1575ETE+
TEMP RANGE
-40 ° C to +85 ° C
-40 ° C to +85 ° C
PIN-PACKAGE
16 Thin QFN 4mm x 4mm
16 Thin QFN 4mm x 4mm
Cell Phones with Main and Sub-Displays
PDAs/Smart Phones with Up to Six White LEDs
+ Denotes lead-free package.
Typical Operating Circuit
1 μ F
Pin Configuration
C1P
C1N
TOP VIEW
2.7V TO 5.5V
IN
OUT
C1N 13
12
11
10
9
8
LED4
1 μ F
GND
MAX1575
LED1
1 μ F
MAIN
IN 14
C2N 15
MAX1575
7
6
LED5
LED6
ENABLE MAIN
ON/OFF
ENM
LED2
AND DIMMING
LED3
C1P 16
+
1
2
3
4
5
ENM
ENABLE SUB
ON/OFF
AND DIMMING
ENS
LED4
LED5
SUB
SET
THIN QFN
4mm x 4mm
R SET
C2P
LED6
C2N
1 μ F
________________________________________________________________ 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1575ETE/V+ | 功能描述:LED照明驱动器 White LED 1x/1.5x Charge Pump for Main and Sub-Displays RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX1575ETE/V+T | 功能描述:LED照明驱动器 White LED 1x/1.5x Charge Pump for Main and Sub-Displays RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX1575ETE+ | 功能描述:LED照明驱动器 White LED 1x/1.5x Charge Pump RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX1575ETE+T | 功能描述:LED照明驱动器 White LED 1x/1.5x Charge Pump RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
| MAX1575ETE-T | 功能描述:LED照明驱动器 White LED 1x/1.5x Charge Pump RoHS:否 制造商:STMicroelectronics 输入电压:11.5 V to 23 V 工作频率: 最大电源电流:1.7 mA 输出电流: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:SO-16N |
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