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MAX1707

更新时间： 2024-01-13 23:21:09
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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MAX1707 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_compliantECCN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 DRIVERJESD-30 代码：S-PQCC-N24
JESD-609代码：e0长度：4 mm
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：HVQCCN封装形状：SQUARE
封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度（摄氏度）：245
认证状态：Not Qualified座面最大高度：0.8 mm
表面贴装：YES端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmBase Number Matches：1

MAX1707 数据手册

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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  
/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  
1µF  
INPUT  
2.7V TO 5.5V  
OUTPUT  
UP TO 610mA  
C1P  
C1N  
C2P  
C2N  
OUT  
IN  
FLASH  
MAIN  
SUB OR RGB  
PIN  
10µF  
4.7µF  
GND  
M1  
MAX1707  
M2  
M3  
M4  
S1  
V
V
DD  
LOGIC  
0.1µF  
S2  
2
S3  
I C PORT  
ON/OFF AND  
BRIGHTNESS  
SCK  
SDA  
STB  
F1  
F2  
F3  
F4  
STROBE  
ON/OFF  
PGND  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...15

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