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AS3687


Part Number AS3687
Manufacturer austriamicrosystems
Title Flexible Lighting Management
Description The AS3687/87XM is a highly-integrated CMOS Lighting Management Unit for mobile telephones, and other 1-cell Li+ or 3-cell NiMH powered devices. T...
Features ƒ High-Efficiency Step Up DC/DC Converter − Up to 25V/50mA for White LEDs − Programmable Output Voltage with External Resistors and Serial Interface − Overvoltage Protection ƒ High-Efficiency Low Noise Charge Pump − 1:1, 1:1.5, and 1:2 Mode − Automatic Up Switching (can be disabled and 1:2 mode can ...

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AS3681 : The AS3681 is a highly-integrated, ultra-flexible CMOS Power- and Lighting Management Unit to supply power to LCD- and camera-modules in mobile telephones, and other 1-cell Li+ or 3-cell NIMH powered devices. The AS3681 incorporates one low-power, low-dropout regulator (LDO), one Step Up DC/DC Converter for white backlight LEDs, one high-power Charge Pump for camera flash LEDs, one Analog-to-Digital Converter, support for up to 11 current sinks, a serial interface, and control logic all onto a single die. The linear analog regulator features extremely high analog performance regarding: ! ! ! Product Brief Supports up to 11 Current Sinks - Three Programmable (4-bit) from: 10 to 150mA resp. .

AS3682 : The AS3682 is a low-noise, high-current charge pump designed for camera flash LEDs and LCD backlighting applications. The device is capable of driving up to 480mA of load current. The AS3682 integrates two independent LED blocks for driving a single flash LED (CURR11 to CURR13) with up to 480mA, and general purpose LEDs (CURR2 to CURR4) with up to 160mA/LED. The general purpose LEDs are controlled individually and can be used for backlighting, but also in support of an RGB fun-light or a movie indicator lamp. The AS3682 utilizes austriamicrosystems' patent-pending Intelligent Adaptive Mode Setting (IAMS) to switch between 1:1, 1:1.5, and 1: 2 modes. In combination with very-low-drop-out curr.

AS3685A : The AS3685 is low noise high efficiency capacitive charge pump with 1:1, 1:1.5 and 1:2 operating modes in a small 3x3mm DFN10 or a tiny 2x1.5mm WL-CSP (Wafer Level Chip Scale Package) package. It can drive one flash LED at up to 1000mA current. It supports flash/torch and indicator mode for the flash LED. Additionally the AS3685 limits the flash time automatically to protect the flash LED. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS3685A/AS3685B, Ultra Small High Efficiency 1000mA Charge Pump for White LED Flash are listed below: Figure 1: Added Value Of Using AS3685A/AS3685B Benefits Features • System safety.

AS3685A : The AS3685 is low noise high efficiency capacitive charge pump with 1:1, 1:1.5 and 1:2 operating modes in a small 3x3mm DFN10 or a tiny 2x1.5mm WL-CSP (Wafer Level Chip Scale Package) package. It can drive one flash led at up to 700mA current. It supports flash/torch and indicator mode for the flash led. Additionally the AS3685 limits the flash time automatically to protect the flash LED. Overtemperature Protection Automatic 800ms Flash Timeout to protect the flash LED (time factory programmable) Two Device Variants: − AS3685A: Direct control to select three currents − AS3685B: Single Pin Interface or Two Pin Interface with Strobe Input; 17 different currents can be selected Package − DFN10 .

AS3685B : The AS3685 is low noise high efficiency capacitive charge pump with 1:1, 1:1.5 and 1:2 operating modes in a small 3x3mm DFN10 or a tiny 2x1.5mm WL-CSP (Wafer Level Chip Scale Package) package. It can drive one flash LED at up to 1000mA current. It supports flash/torch and indicator mode for the flash LED. Additionally the AS3685 limits the flash time automatically to protect the flash LED. Ordering Information and Content Guide appear at end of datasheet. Key Benefits & Features The benefits and features of AS3685A/AS3685B, Ultra Small High Efficiency 1000mA Charge Pump for White LED Flash are listed below: Figure 1: Added Value Of Using AS3685A/AS3685B Benefits Features • System safety.

AS3685B : The AS3685 is low noise high efficiency capacitive charge pump with 1:1, 1:1.5 and 1:2 operating modes in a small 3x3mm DFN10 or a tiny 2x1.5mm WL-CSP (Wafer Level Chip Scale Package) package. It can drive one flash led at up to 700mA current. It supports flash/torch and indicator mode for the flash led. Additionally the AS3685 limits the flash time automatically to protect the flash LED. Overtemperature Protection Automatic 800ms Flash Timeout to protect the flash LED (time factory programmable) Two Device Variants: − AS3685A: Direct control to select three currents − AS3685B: Single Pin Interface or Two Pin Interface with Strobe Input; 17 different currents can be selected Package − DFN10 .

AS3685C : The AS3685 is low noise high efficiency capacitive charge pump with 1:1, 1:1.5 and 1:2 operating modes in a small 3x3mm DFN10 or a tiny 2x1.5mm WL-CSP (Wafer Level Chip Scale Package) package. It can drive one flash led at up to 1000mA current. It supports flash/torch and indicator mode for the flash led. Additionally the AS3685 limits the flash time automatically to protect the flash LED. 2 Key Features ƒ High Efficiency capactive charge pump with 1:1, 1:1.5 and 1:2 modes − 1:2 Mode can be disabled by interface ƒ Up to 1000mA Led Current ƒ Automatic Charge Pump Mode switching (Up) 4 Application Diagram Figure 1 – Application Diagram of AS3685C ƒ LED cathode disconnect in Shutdown ƒ Overtem.

AS3687XM : The AS3687/87XM is a highly-integrated CMOS Lighting Management Unit for mobile telephones, and other 1-cell Li+ or 3-cell NiMH powered devices. The AS3687/87XM incorporates one Step Up DC/DC Converter for white backlight LEDs, one low noise Charge Pump for indicator- or RGB- LEDs, LED test circuit (production test of the soldered LEDs at the customer site), one Analog-to-Digital Converter, seven current sinks, a two wire serial interface, and control logic all onto a single device. Output voltages and output currents are fully programmable. The AS3687XM has an audio input to control one or two RGB LEDs. The AS3687/87XM is a successor to the austrimicrosystems AS3689 and therefore software c.

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