MAX6946CAWE+

更新时间： 2024-11-29 13:01:51

品牌	Logo	应用领域
美信 - MAXIM		驱动器
页数	文件大小	规格书
24页	267K
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MAX6946CAWE+ 数据手册

19-0598; Rev 3; 2/08

10-Port, Constant-Current LED Driver and

I/O Expander with PWM Intensity Control

General Description

Features

The MAX6946/MAX6947 I C-/SMBus^TM-compatible,

serial-interfaced peripherals provide microprocessors

with 10 I/O ports rated to 7V.

♦ 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

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.

♦ 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

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.

♦ RST Input Clears Serial Interface and Can Exit

Shutdown (Warm Start)

♦ MAX6946 OSC Input Allows for External PWM

Clock Input

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.

♦ 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

For a similar part with an SPI^TM-/QSPI^TM-/ or MICROWIRE^TM-

compatible interface, refer to the MAX6966/MAX6967

data sheet.

♦ 0.8µA (typ) Shutdown Current

♦ -40°C to +125°C Temperature Range

♦ Tiny WLP Package (4 x 4 Grid)

Applications

LCD Backlights

Keypad Backlights

LED Status Indicators

Ordering Information

Cellular Phones

Portable Equipment

RGB LED Drivers

PKG

CODE

PART

PIN-PACKAGE

MAX6946ATE+

MAX6946CAWE+

MAX6947ATE+

16 TQFN-EP*

16 WLP

T1633-4

W162B2-1

T1633-4

Typical Operating Circuit

16 TQFN-EP*

+Denotes a lead-free package.

*EP = Exposed pad.

+3.3V

= +5V

EXT

Note: All devices are specified over the -40°C to +125°C operating

temperature range..

μC

Pin Configurations

SCL

SDA

SCL

SDA

OSC*

RST

MAX6946

MAX6947

LOGIC INPUT

TOP VIEW

MAX6946C

RST

VDD

SCL

SDA

AD0**

GND

*MAX6946 ONLY.

**MAX6947 ONLY.

OSC

SMBus is a trademark of Intel Corp.

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

GND

(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.

12 3 4 5 6 7...24

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与MAX6946CAWE+相关器件

型号	品牌	获取价格	描述	数据表
MAX6947	ADI	获取价格	10端口、恒流LED驱动器和输入/输出扩展器，带有PWM亮度控制
MAX6947ATE	MAXIM	获取价格	10-Port, Constant-Current LED Driver and I/O Expander with PWM Intensity Control
MAX6947ATE+	MAXIM	获取价格	LED Driver, 3-Segment, BICMOS, 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WEED-2, TQFN-16
MAX6947ATE+	ROCHESTER	获取价格	LED DISPLAY DRIVER, QCC16, 3 X 3 MM, 0.80 MM HEIGHT, LEAD FREE, MO-220WEED-2, TQFN-16
MAX6948	MAXIM	获取价格	MAX6948 Evaluation Kit
MAX6948B	MAXIM	获取价格	High-Efficiency PWM LED Driver with Boost Converter and Five Constant-Current GPIO Ports
MAX6948BGWA+	MAXIM	获取价格	High-Efficiency PWM LED Driver with Boost Converter and Five Constant-Current GPIO Ports
MAX6948EVKIT	MAXIM	获取价格	MAX6948 Evaluation Kit
MAX694C/D	MAXIM	获取价格	Microprocessor Supervisory Circuits
MAX694CPA	MAXIM	获取价格	Microprocessor Supervisory Circuits

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