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參數(shù)資料
| 型號(hào)： | SC615A |
| 廠商： | Semtech Corporation |
| 英文描述： | Charge Pump Flash LED Driver |
| 中文描述： | 電荷泵閃光LED驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大小： | 216K |
| 代理商： | SC615A |
www.semtech.com
1
POWER MANAGEMENT
Description
SC615A
Charge Pump
Flash LED Driver
September 22, 2005
Typical Application Circuit
Applications
Features
Two Selectable Modes - Flash and Spotlight
Up to 700mA Output - Flash Mode
Up to 280mA Output - Spotlight Mode
500mA Over Temperature Range and Voltage
Range - Flash Mode
Spotlight mode set to 40% of Flash Current
3.0V to 5.25V Input Range
External Flash Control Pin for Synchronization to a
Camera Module or Graphics Controller
Short Circuit, Over-Voltage, and Over-Temperature
Protection
Soft-Start Functionality
Two Control Inputs for Maximum Versatility
Shutdown Current < 2
μ
A
Micro Lead Package MLPD-10, 3mm x 3mm
Mobile Camera Phones
Digital Cameras
PDAs with Built-in Cameras
The SC615A is a high-current charge pump designed spe-
cifically for use with white LEDs used in camera flash
applications. Only two small bucket capacitors are re-
quired to develop the output drive, providing a low EMI
solution compared to inductive boost regulators.
The SC615A has two modes of operation: Flash mode
and Spotlight mode. In Flash mode, the SC615A is ca-
pable of delivering 500mA of regulated current for a du-
ration of 500ms or up to 700mA for a reduced duration.
In Spotlight mode the SC615A outputs 40% of the Flash
mode current and can remain enabled continuously.
An external resistor is connected in series with the LED
to set the current. In Flash mode, this resistor can
dissipate up to 175mW, reducing the power dissipation
requirement of the SC615A. The flash input (FLASH)
overrides the control input (CTRL) to make sure the flash
function is activated when called for.
The thermally efficient MLPD-10 package and ceramic
bypass and bucket capacitors make the SC615A a high
output current driver that requires minimal PCB area.
3.0V to 5.25V
SC615A
VIN
1
C2-
2
C2+
10
C1-
4
C1+
8
VOUT
9
FLASH
5
CTRL
7
GND
3
ISET
6
1
μ
F
1
μ
F
FLASH
CTRL
1
μ
F
white LED
0.5
10
μ
F
C1
C2
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SC615AEVB | Charge Pump Flash LED Driver |
| SC615AMLTRT | Charge Pump Flash LED Driver |
| SC615 | Charge Pump Flash LED Driver |
| SC615EVB | Charge Pump Flash LED Driver |
| SC615IMLTRT | Charge Pump Flash LED Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SC615A_08 | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Charge Pump Flash LED Driver |
| SC615AEVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Charge Pump Flash LED Driver |
| SC615AMLTRT | 制造商:Semtech Corporation 功能描述:LED DRVR 1Segment 3.3V/5V 10-Pin MLPD T/R |
| SC615EVB | 制造商:SEMTECH 制造商全稱:Semtech Corporation 功能描述:Charge Pump Flash LED Driver |
| SC615IMLTRT | 制造商:Semtech Corporation 功能描述:LED DRVR 1Segment 3.3V/5V 10-Pin MLPD T/R |
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