收藏本站
KIT AVAIL
19-3461; Rev 0; 11/04
ABLE
EV ALUATION
1.2A White LED Regulating Charge Pump for
Camera Flashes and Movie Lights
General Description
The MAX1577Y/MAX1577Z charge pumps drive white
LEDs, including camera strobes, with regulated current
up to 1.2A (guaranteed to 800mA). The very low open-
loop output resistance allows high flash brightness,
even from a low battery input voltage. The adaptive
1x/2x regulating charge-pump operation provides high
efficiency (up to 92%) while in movie mode or back-
lighting. Fast (1MHz) switching allows the use of tiny
external components.
The MAX1577Y/MAX1577Z use an external resistor to
set the full-scale LED current. Two enable inputs (EN1
and EN2) provide simple on/off control and LED current
of 20%, 33%, or 100% full scale. If there is less than
24mV across the external resistor, the output voltage is
regulated. The MAX1577Z has fixed 5.1V output-volt-
age regulation, while the MAX1577Y has logic-con-
trolled output voltage of 3.4V, 4.6V, or 5.1V for
backlighting, keyboard, and RGB applications.
The MAX1577Y/MAX1577Z are available in an 8-pin,
3mm x 3mm TDFN package (0.8mm max height).
Applications
White LED Flashes, Strobes, and Movie Lights
Features
? Up to 1.2A Output Drive Capability (800mA
Guaranteed)
? Up to 92% P LED / P BATT Efficiency for Movie
Mode
? Flexible Brightness Control
Two-Bit Logic for 100%, 33%, 20%, and Off
PWM for 20% to 100%
? 3% Current Regulation Over Line and
Temperature
? Current or Voltage Regulation for Flash and
Backlighting (MAX1577Y)
? Current Regulation for Flash (MAX1577Z)
? Low Ripple and EMI
? 2.7V to 5.5V Supply Voltage Range
? Soft-Start Limits Inrush Current
? Output-Voltage Regulation Mode
? Thermal-Shutdown Protection
? 8-Pin 3mm x 3mm TDFN Package
Ordering Information
LCD Backlighting
Camera Phones, Cell Phones, and Smart Phones
PDAs, Digital Cameras, and Camcorders
PART
MAX1577Y ETA
MAX1577Z ETA
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
PIN-
PACKAGE
8 TDFN
(T833-2)
8 TDFN
(T833-2)
TOP
MARK
AMG
AMQ
Typical Operating Circuit
1 μ F OR 2.2 μ F
TOP VIEW
Pin Configuration
2.7V TO 5.5V
CP
CN
5.3V OVP
UP TO 1.2A
8
7
6
5
4.7 μ F
IN
OUT
10 μ F
GND
MAX1577Y
MAX1577Z
V OUT - (300mV OR
MAX1577Z
100%,
33%, 20%,
AND
EN1
CS
100mV OR 60mV)
1
2
3
4
SHUTDOWN
EN2
TDFN
________________________________________________________________ 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
发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

*型号 *数量 厂商 批号 封装
添加更多采购

我的联系方式

*
*
*
相关PDF资料
MAX1582ETC+T IC LED DRVR WHITE BCKLGT 12-TQFN
MAX1583ZETB+T IC LED DRIVR PHOTO FLASH 10-TDFN
MAX1599ETA+T IC LED DRIVR WHITE BCKLGT 8-TDFN
MAX1614EUA+ IC DVR MOSFET HI-SIDE NCH 8-UMAX
MAX16800ATE/V+ IC LED DRIVR HIGH BRIGHT 16-TQFN
MAX16804ATP+T IC LED DRIVR HIGH BRIGHT 20-TQFN
MAX16812ATI/V+ IC LED DRIVR HIGH BRIGHT 28-TQFN
MAX16814AUP+T IC LED DVR HI-BRIGHT 4CH 20TSSOP
相关代理商/技术参数
MAX1577ZETA-T 功能描述:电荷泵 RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube
MAX1577ZEVKIT 功能描述:电荷泵 Evaluation Kit for the MAX1577Y MAX1577Z RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube
MAX1578ETG 功能描述:LED照明驱动器 Cmplete Bias & White LED Power Supply 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
MAX1578ETG+ 功能描述:LED照明驱动器 Cmplete Bias & White LED Power Supply 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
MAX1578ETG+T 功能描述:LED照明驱动器 Cmplete Bias & White LED Power Supply 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
MAX1578ETG-T 功能描述:LED照明驱动器 Cmplete Bias & White LED Power Supply 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
MAX1579ETG 功能描述:LED照明驱动器 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
MAX1579ETG+ 功能描述:LED照明驱动器 Cmplete Bias & White LED Power Supply 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