MAX8830EWE+T

更新时间： 2024-09-12 13:02:07

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MAX8830EWE+T 数据手册

19-0782; Rev 0; 4/07

LED Light Management IC in

2.5mm x 2.5mm UCSP

MAX830

General Description

Features

The MAX8830 light management IC integrates a 280mA

PWM DC-DC step-up converter, a 200mA white LED

camera flash current sink, and four programmable LED

current sinks. The internal 1MHz step-up converter fea-

tures an internal switching MOSFET and synchronous

rectifier to improve efficiency and minimize external

component count. The camera flash output current and

maximum timer is programmable through I²C. Each LED

current is individually regulated to a programmable level

(from off to 10mA in 32 steps) and is completely inde-

pendent of each other.

♦ Step-Up DC-DC Converter

280mA Guaranteed Output Current

Over 90% Efficiency

On-Chip FET and Synchronous Rectifier

Fixed 1MHz PWM Switching

Small 2.2µH to 10µH Inductor

I²C-Programmable V

16 Steps)

(3.8V to 5.2V and Off in

OUT

♦ Flash LED Current Sink

I²C-Programmable Flash Output Current (Off to

200mA in 16 Steps)

An I²C interface controls individual on/off of all outputs,

step-up output voltage setting, movie/flash current,

flash timer duration settings, and individual LED current

sink settings.

I²C-Programmable Flash Maximum Timer (0.5s,

1.0s, 1.5s, or 2.0s)

I²C-Programmable Movie Output Current (Off to

200mA in 16 Steps)

The MAX8830 is available in a 16-bump UCSP™ pack-

age (2.5mm x 2.5mm).

Movie Enabled by I²C or Logic Input

Flash Enabled by Logic Input

Low Dropout (75mV typ)

Applications

Cell Phones and Smartphones

♦ Four LED Current Sinks

PDAs and MP3 Players

Individually I²C-Programmable Output Current

Off to 10mA in 32 Steps

Low LED Sink Current Dropout Voltage (30mV typ)

♦ I²C Interface

Typical Operating Circuit

2.2μH TO

10μH

Write Address (0x94), Read Address (0x95)

Individual On/Off and LED Current Settings

Simple Register Mapping

PROGRAMMABLE

OUTPUT

3.8V TO 5.2V

INPUT

2.7V TO 5.5V

♦ < 1µA Shutdown Current

UP TO 280mA

OUT

♦ Open/Short LED Detection

OUT

GND

♦ Thermal-Shutdown Protection

♦ 16-Bump, 2.5mm x 2.5mm UCSP Package

PGND

MAX8830

COMP

200mA FLASH

Ordering Information

FLED

MOVIE ON

FLASH ON

MVON

FLEN

TEMP

RANGE

PKG

CODE

PART

PIN-PACKAGE

LED1

LED2

LED3

LED4

-40°C to 16-bump 2.5mm x

+85°C 2.5mm UCSP

MAX8830EWE+T

W162A2-1

SCL

SDA

+Denotes a lead-free package.

LOGIC

Pin Configuration appears at the end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

________________________________________________________________ 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.

12 3 4 5 6 7...15

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与MAX8830EWE+T相关器件

型号	品牌	获取价格	描述	数据表
MAX8830EWET	MAXIM	获取价格	LED Light Management IC in 2.5mm x 2.5mm UCSP
MAX8831	MAXIM	获取价格	High-Efficiency, White LED Step-Up Converter with I2C Interface in 2mm x 2mm WLP
MAX8831EWE+T	MAXIM	获取价格	High-Efficiency, White LED Step-Up Converter with I2C Interface in 2mm x 2mm WLP
MAX8833	MAXIM	获取价格	Dual, 3A, 2MHz Step-Down Regulator
MAX8833	ADI	获取价格	双路、3A、2MHz降压型调节器
MAX8833_09	MAXIM	获取价格	Dual, 3A, 2MHz Step-Down Regulator
MAX8833ETJ+	MAXIM	获取价格	Dual, 3A, 2MHz Step-Down Regulator
MAX8833ETJ+T	MAXIM	获取价格	暂无描述
MAX8834	MAXIM	获取价格	Adaptive Step-Up Converters with 1.5A Flash Driver
MAX8834Y	MAXIM	获取价格	Adaptive Step-Up Converters with 1.5A Flash Driver

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