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參數(shù)資料
| 型號(hào)： | SC604A |
| 廠商： | Semtech Corporation |
| 英文描述： | Low Noise, High Efficiency Regulated White LED Driver |
| 中文描述： | 低噪聲，高效率調(diào)控白光LED驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 1/18頁 |
| 文件大?。?/td> | 375K |
| 代理商： | SC604A |
1
United States Patents: 6,504,422, 6,794,926
www.semtech.com
POWER MANAGEMENT
The SC604A is a very high efficiency charge pump white
LED driver driver from the mAhXLife
TM
family of products,
optimized for Li-Ion battery applications.
SC604A
Low Noise, High Efficiency
Regulated White LED Driver
Features
Very high efficiency over 90% of battery life
Peak efficiency over 92%
Current regulation for up to 4 LEDs
Digital 3 bit output control logic
Current matching tolerance of ±3% typical
Wide current range per LED [0.5mA - 30mA]
High available total LED current = 4
z
I
LED
= 120mA
Low Shutdown Current: 1μA typical
Soft start / In-rush current limiting
Short circuit protection
MLP-16 [4x4] Package
Fixed frequency 250kHz
1x, 1.5x and 2x charge pump modes of operation
June 27, 2005
OBJECTIVE -NOVEMBER
Applications
Cellular phones
LED backlighting
PDA power supplies
Portable devices
Typical Application Circuit
The four (4) LED outputs are current matched for consis-
tent LED brightness. Extremely low battery current is
achieved by automatically reconfiguring the charge pump
to match circuit conditions. Using four LEDs, each at
20mA for a total I
= 80mA, the SC604A can use less
than 83mA from the supply for most of the battery life.
Patented low noise mode switching circuitry and constant
output current allow the use of extremely small input and
output capacitors.
Electronic books
Wireless web appliances
LCD Modules
Patent Pending
VIN
EN
CTRL0
CTRL1
CTRL2
BATTERY
1
μ
F
GND
ILED1
ILED2
ILED3
ILED4
VOUT
C1+
C1-
C2+
C2-
SC604A
1
μ
F
1
μ
F
1
μ
F
ISET
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC604AIMLTR | Low Noise, High Efficiency Regulated White LED Driver |
| SC604AIMLTRT | Low Noise, High Efficiency Regulated White LED Driver |
| SC604EVB | Low Noise, High Efficiency Regulated White LED Driver |
| SC605-R | Speech And Music Processor |
| SC605-RL1 | Speech And Music Processor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC604AIMLTR | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Low Noise, High Efficiency Regulated White LED Driver |
| SC604AIMLTRT | 制造商:Semtech Corporation 功能描述:LED DRVR 4Segment 3.3V/5V 16-Pin MLP EP T/R |
| SC604EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Low Noise, High Efficiency Regulated White LED Driver |
| SC604-R | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech And Music Processor |
| SC604-RL1 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Speech And Music Processor |
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