SC618ULTRT Semtech, SC618ULTRT Datasheet
SC618ULTRT
Specifications of SC618ULTRT
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SC618ULTRT Summary of contents
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NOT RECOMMENDED FOR NEW DESIGN POWER MANAGEMENT Features Flash and spotlight — two selectable modes Flash mode — 700mA output Flash mode — 500mA max output (over rated voltage, temperature, and load conditions) Flash mode safety timer shut-off ...
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... JA Marking Information 618 yyww xxxx yyww = Date code xxxx = Semtech Lot Number Ordering Information Device (1)(2) SC618ULTRT SC618EVB Notes: C2+ 10 (1) Available in tape and reel only. A reel contains 3,000 devices. (2) Lead-free package only. Device is WEEE and RoHS compliant. VOUT 9 8 C1+ ...
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NOT RECOMMENDED FOR NEW DESIGN Absolute Maximum Ratings VIN ( ...
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Electrical Characteristics (continued) Parameter (2) Flash Mode Pulse Duration (2) Flash Mode Start-Up Time Flash Mode Safety Timer (2) Spotlight Mode (2,3) Start-Up Time Oscillator Frequency Oscillator Frequency Accuracy Short-Circuit Output Current Limit Input Current Limit (2) Over-Temperature Protection Logic ...
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NOT RECOMMENDED FOR NEW DESIGN Typical Characteristics Flash Current at 10ms 500mΩ, V ISET 515 510 505 500 495 490 485 3.3 3.45 3.6 3.75 VIN (V) Flash Current at 500ms 500mΩ, V ISET 515 510 ...
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NOT RECOMMENDED FOR NEW DESIGN Typical Characteristics (continued) Flash Mode Ripple 100mV/DIV Ch 2: 200mV/DIV Ch 3: 200mV/DIV Time (4μs/div) Safety Timer Shut-Off Ch1: 100mV/DIV Ch2: 2V/DIV Ch3: 5V/DIV Time (200ms/div) Spotlight 2x Mode Ripple, R Ch1: ...
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Pin Descriptions Pin# Pin Name Pin Function 1 VIN Input voltage 2 C2- Negative terminal of bucket capacitor 2 3 GND Ground— connect to ground plane using multiple vias 4 C1- Negative terminal of bucket capacitor 1 5 FLASH Flash ...
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NOT RECOMMENDED FOR NEW DESIGN Block Diagram VIN 1 CTRL 7 FLASH 5 LDO 250kHz Logic Control and Flash CHARGE Mode Timer PUMP Reference Voltage Generator SC618 8 C1+ 4 C1- 10 C2+ 2 C2- 9 VOUT 3 GND 6 ...
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NOT RECOMMENDED FOR NEW DESIGN Applications Information General Operation The SC618 is a powerful dual-mode charge pump designed to drive a high-intensity white LED. A constant current spotlight mode or a pulsed current with higher intensity is used for camera ...
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NOT RECOMMENDED FOR NEW DESIGN Applications Information (continued) that the voltage on the ISET pin can no longer be main- tained. After a 32ms delay (included to prevent false transitions) the charge pump will convert to 2x mode. After the ...
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Applications Information (continued) PCB Layout Considerations The following layout is suggested for a two-layer design. The capacitors C1 and C2 are the bucket capacitors and each conducts the full load current 500mA pulsed for one half clock ...
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Outline Drawing — MLPD-UT-10 A PIN 1 INDICATOR (LASER MARK) aaa LxN N e NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS TERMINALS ...
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... FAILURE MAY COMPROMISE THE THERMAL AND/OR FUNCTIONAL PERFORMANCE OF THE DEVICE. Contact Information DIM Semtech Corporation Power Management Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805) 498-2111 Fax: (805) 498-3804 www.semtech.com SC618 DIMENSIONS MILLIMETERS INCHES (.112) (2.85) .075 1.90 .055 1.40 ...