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| 型号： | MAX6947ATE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 1/24页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 恒定电流： | 是 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 10 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光 |
| 类型 - 次要： | RGB，白色 LED |
| 频率： | 400kHz |
| 电源电压： | 2.25 V ~ 3.6 V |
| 输出电压： | 7V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN（3x3） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
ATION
ILABLE
19-0598; Rev 3; 2/08
KIT
EVALU
AVA
10-Port, Constant-Current LED Driver and
I/O Expander with PWM Intensity Control
General Description
The MAX6946/MAX6947 I 2 C-/SMBus TM -compatible,
serial-interfaced peripherals provide microprocessors
with 10 I/O ports rated to 7V.
Each port can be configured as a 2.5mA to 20mA con-
stant-current LED driver (static or PWM), a 1.25mA to
10mA constant-current LED driver (static or PWM), an
open-drain logic output, or an overvoltage-protected
Schmitt logic input.
Analog and switching LED intensity control includes indi-
vidual 8-bit PWM control per output, individual 1-bit ana-
log current control (half/full scale) per output, and a global
3-bit DAC current control that applies to all LED outputs.
The MAX6946/MAX6947 can stagger the PWM timing of
the 10-port outputs in consecutively phased 45° incre-
ments. Staggering the outputs spreads the PWM load
currents over time in eight steps, helping to even out
the power-supply current and reduce the RMS current.
For a similar part with an SPI TM -/QSPI TM -/ or MICROWIRE TM -
compatible interface, refer to the MAX6966/MAX6967
Features
? 2.25V to 3.6V Operation
? I/O Ports Default to High Impedance (LEDs Off)
on Power-Up
? I/O Port Inputs Are Overvoltage Protected to 7V
? I/O Port Outputs Are 7V-Rated Open-Drain, 10mA
or 20mA Constant-Current Static/PWM LED
Drivers, or Open-Drain Logic Outputs
? I/O Ports Support Hot Insertion
? Individual 8-Bit PWM Intensity Control for Each LED
? RST Input Clears Serial Interface and Can Exit
Shutdown (Warm Start)
? MAX6946 OSC Input Allows for External PWM
Clock Input
? MAX6947 AD0 Input Selects from Two Slave
Addresses
? Auto Ramp-Up Out of Shutdown, and Up to 4s
Hold-Off Before Ramp-Down into Shutdown
? 0.8 μ A (typ) Shutdown Current
? -40°C to +125°C Temperature Range
data sheet.
Applications
? Tiny WLP Package (4 x 4 Grid)
Ordering Information
Cellular Phones
Portable Equipment
RGB LED Drivers
LCD Backlights
Keypad Backlights
LED Status Indicators
PART
MAX6946 ATE+
PIN-PACKAGE
16 TQFN-EP*
PKG
CODE
T1633-4
Typical Operating Circuit
MAX6946CAWE+
MAX6947 ATE+
16 WLP
16 TQFN-EP*
W162B2-1
T1633-4
+3.3V
V DD
V EXT = +5V
+ Denotes a lead-free package.
* EP = Exposed pad.
Note: All devices are specified over the -40°C to +125°C operating
μ C
SCL
SDA
SCL
SDA
OSC*
RST
MAX6946
MAX6947
P0
P1
P2
P3
P4
P5
P6
LOGIC INPUT
LOGIC INPUT
LOGIC INPUT
LOGIC INPUT
temperature range..
TOP VIEW
Pin Configurations
MAX6946C
AD0**
GND
P7
P8
P9
LOGIC INPUT
LOGIC INPUT
LOGIC INPUT
A1
RST
A2
VDD
A3
SCL
A4
SDA
*MAX6946 ONLY.
**MAX6947 ONLY.
SMBus is a trademark of Intel Corp.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
B1
P9
C1
P8
D1
P6
B2
OSC
C2
P7
D2
P5
B3
P1
C3
P3
D3
GND
B4
P0
C4
P2
D4
P4
(BUMPS ON BOTTOM)
16-BUMP, 2.1mm x 2.1mm WLP
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim 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 |
|---|---|
| MAX6947ATE+ | 功能描述:LED照明驱动器 10-Port Constant Current LED Driver 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 |
| MAX6947ATE+T | 功能描述:LED照明驱动器 10-Port Constant Current LED Driver 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 |
| MAX6948BGWA+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX6948BGWA+T | 功能描述:LED照明驱动器 High-Efficiency PWM LED Driver 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 |
| MAX694C/D | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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