MAX1707ETG

更新时间： 2024-11-05 04:00:43

品牌	Logo	应用领域
美信 - MAXIM		闪光灯泵
页数	文件大小	规格书
15页	793K
描述
Light-Management IC with Efficient 1x/1.5x/2x Charge Pump for Backlight/Flash/RGB LEDs

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MAX1707ETG 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	零件包装代码：	QFN
包装说明：	4MM X 4MM , TQFN-24	针数：	24
Reach Compliance Code：	not_compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.91
接口集成电路类型：	LIQUID CRYSTAL DISPLAY DRIVER	JESD-30 代码：	S-PQCC-N24
JESD-609代码：	e0	湿度敏感等级：	1
功能数量：	1	端子数量：	24
封装主体材料：	PLASTIC/EPOXY	封装代码：	HQCCN
封装形状：	SQUARE	封装形式：	CHIP CARRIER, HEAT SINK/SLUG
峰值回流温度（摄氏度）：	245	认证状态：	Not Qualified
表面贴装：	YES	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	NO LEAD	端子位置：	QUAD
处于峰值回流温度下的最长时间：	NOT SPECIFIED	Base Number Matches：	1

MAX1707ETG 数据手册

19-3744; Rev 0; 7/05

Light-Management IC with Efficient 1x/1.5x/2x

Charge Pump for Backlight/Flash/RGB LEDs

General Description

Features

The MAX1707 provides complete light management for

main display backlight, subdisplay backlight (or RGB

indicator), and white LED camera flash with regulated

constant current up to 610mA total. By utilizing adap-

tive 1x/1.5x/2x charge-pump modes and very-low-

dropout current regulators, it achieves high efficiency

over the full 1-cell Li+ battery input voltage range. The

1MHz fixed-frequency switching allows for tiny external

components while the regulation scheme is optimized

to ensure low EMI and low input ripple. An integrated

derating function protects the LEDs from overheating

during high ambient temperatures.

♦ Guaranteed 610mA Continuous Drive Capability

4 LEDs at 30mA Each for Main Display

3 LEDs at 30mA Each for Sub or RGB

400mA Total for Flash

♦ 2-Wire I²C Serial Port

5-Bit (32-Step) Linear Dimming

32k Colors

Ramp-Up/Down Rates

♦ 92% Peak/83% Avg Efficiency (P

)

LED BATT

♦ Adaptive 1x/1.5x/2x Mode Switchover

♦ 0.3% (typ) LED Current Accuracy and Matching

♦ Low Input Ripple and EMI

The MAX1707 features an internally trimmed reference

†

to set the maximum LED current. An I²C serial port is

used for on/off control and setting the LED currents in

32 linear steps. When using the RGB indicator, the I²C

port provides 32k colors and programmable ramp-

up/down rates. The camera flash may be turned on/off

by the I²C port or a separate digital logic input.

♦ Low 0.1µA Shutdown Current

♦ Output Overvoltage Protection

♦ Thermal Derating Function Protects LEDs

♦ 24-Pin 4mm x 4mm Thin QFN Package

Applications

Ordering Information

Cell Phones and Smartphones

PDAs, Digital Cameras, Camcorders

Displays with Up to 11 LEDs

PKG

PIN-

PART

TEMP RANGE

CODE

PACKAGE

24 Thin QFN

4mm x 4mm

†

MAX1707ETG -40°C to +85°C

T2444-4

Purchase of I²C components from Maxim Integrated Products,

Inc., or one of its sublicensed Associated Companies, conveys

a license under the Philips I²C Patent Rights to use these com-

ponents in an I²C system, provided that the system conforms to

the I²C Standard Specification as defined by Philips.

Pin Configuration appears at end of data sheet.

Typical Operating Circuit

1µF

INPUT

2.7V TO 5.5V

OUTPUT

UP TO 610mA

C1P

C1N

C2P

C2N

OUT

FLASH

MAIN

SUB OR RGB

10µF

4.7µF

GND

MAX1707

LOGIC

0.1µF

I C PORT

ON/OFF AND

BRIGHTNESS

SCK

SDA

STB

STROBE

ON/OFF

PGND

________________________________________________________________ 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

中文翻译

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与MAX1707ETG相关器件

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MAX17080GTL+	MAXIM	获取价格	AMD 2-/3-Output Mobile Serial VID Controller
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MAX17082GTL+	MAXIM	获取价格	Dual-Phase, Quick-PWM Controllers for IMVP-6+/IMVP-6.5 CPU Core Power Supplies
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