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參數資料
| 型號： | SC606AIMLTRT |
| 廠商： | Semtech Corporation |
| 英文描述： | Low Noise Smart LED Driver with Serial Interface |
| 中文描述： | 低噪聲智能串行接口的LED驅動器 |
| 文件頁數： | 1/18頁 |
| 文件大小： | 385K |
| 代理商： | SC606AIMLTRT |
United States Patents: 6,504,422, 6,794,926
www.semtech.com
1
POWER MANAGEMENT
Description
SC606
Low Noise Smart LED
Driver with Serial Interface
August 31, 2006
Applications
Features
The SC606 is a very high efficiency charge pump white/color LED
driver from the mAhXLife
TM
family of products. It is optimized for
Li-Ion battery applications. The LED current is regulated to a value
configured by the user through an I
2
C compatible serial interface.
LED outputs are current-matched for consistent LED brightness.
Up to 6 LEDs are controlled in three zones for brightness control in
multiple displays. The 6 LED outputs are divided into 3 pairs of
LEDs. Each pair has current that is programmable independent of
the other pairs. Any combination of LEDs may be turned on using
the serial interface. The SC606 also has a float detect feature
that disables any current driver during normal operation when an
open-load condition is detected.
Patented low noise switching circuitry and constant output current
allow the use of extremely small input and output capacitors.
Very High Efficiency Over 90% of Battery Life
Current Regulation for 6 LEDs
Current Matching Tolerance of +/- 3.5% from LED to LED
Current Accuracy to +/- 6.5% of Specified Value
Current Range per LED [0.5mA - 32mA]
High Available Total LED Current = 6 I
LED
= 120mA
I
2
C Bus Limited Compatibility SC606
Low Shutdown Current: 0.1
μ
A Typical
Soft-Start /In-rush Current Limiting
Short Circuit /Thermal Protection
MLP-16 [4x4] Package
1.33MHz and 250kHz Programmable Fixed Frequency
Separate Brightness Zones for Multiple Displays
Three Charge Pump Modes of Operation: 1x, 1.5x and 2x
Open LED Output Protection
Cellular Phones
LED Backlighting
PDA Power Supplies
Portable Devices
Electronic Books
Wireless Web Appliances
Typical Application Circuit
C3
1μF
C4
1μF
VBAT
1
2
3
4
5
6
7
8
9
10
SCL
SDA
EN
C2
1μF
V
V
C
C
C2-
C2+
GND
ILEDC2
ILEDA1
SDA
SCL
EN
I
I
I
I
D1
SC606
11
12
1
1
1
1
C1
1μF
D6
D5
D4
D3
D2
Patent Pending
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