 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
AS3648 Datasheet(PDF) 2 Page - ams AG |
|
||||||||||||||||||||||||||||||
AS3648 Datasheet(HTML) 2 Page - ams AG |
|
|
2 / 39 page  AS3648 2000mA High Current LED Flash Driver www.austriamicrosystems.com/AS3648 1.5-4 1 - 38 (ptr) Datasheet 1 General Description The AS3648 is an inductive high efficient DCDC step up converter with two current sinks. The DCDC step up converter operates at a fixed frequency of 4MHz and includes soft startup to allow easy integration into noise sensitive RF systems. The two current sinks can oper- ate in flash / torch / assist (=video) light modes. The AS3648 includes flash timeout, overvoltage, over- temperature, undervoltage and LED short circuit protec- tion functions. A TXMASK/TORCH function reduces the flash current in case of parallel operation to the RF power amplifier and avoids a system shutdown. Alterna- tively this pin can be used to directly operate the torch light directly. The AS3648 is controlled by an I 2C interface and has a hardware automatic shutdown if SCL=0 for 100ms. Therefore no additional enable input is required for shut- ting down of the device once the system shuts down. The AS3648 is available in a space-saving WL-CSP package measuring only 2.25x1.5x0.6mm and operates over the -30ºC to +85ºC temperature range. Figure 1. Typical Operating Circuit 2 Key Features High efficiency 4MHz fixed frequency DCDC Boost converter with soft start allows small coils - Stable even in coil current limit LED current adjustable up to 2000mA Two LED operation or single LED operation (com- bine LED_OUT1 with LED_OUT2) Automatic current adjustment for low battery voltage PWM operation for lower output current for reliable light output of the LED; running at 31.25kHz to avoid audible noise Protection functions: Automatic Flash Timeout timer to protect the LED(s) Overvoltage and undervoltage Protection Overtemperature Protection LED short/open circuit protection I 2C Interface with automatic shutdown 5V constant voltage mode operation Available in tiny WL-CSP Package, 13 balls 0.5mm pitch 2.25x1.5x0.6mm, package size 3 Applications Flash/torch/videolight for smartphones, feature-phones, tablets, DSCs, DVCs !" #$ %& '" ()* !" ) & ) %& +', -,.$ * '" '" '" '" & & ! ! / AS3648 |
Similar Part No. - AS3648 |
|
Similar Description - AS3648 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
